The Python: Rag March issue available
The March issue of The Python: Rag is available at: http://tinyurl.com/pyrag2010-03 with previous issues available at the web site: http://www.pythonrag.org or http://groups.google.co.uk/group/pythonrag -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
BetterBatch 0.9.5 released - Added For loops and Parallel sections
From: mark.m.mcma...@gmail.com To: python-annou...@python.org Hi, The 0.9.5 release of BetterBatch is now available. BetterBatch is designed as a middle ground between batch files and more powerful languages (Python, shell scripting, etc). The project is hosted on code.google.com: http://code.google.com/p/betterbatch/ Download from http://code.google.com/p/betterbatch/downloads/list Or discuss at http://groups.google.com/group/betterbatch-discuss/topics Here is the list of changes from the last release: 0.9.5 Added For loops and Parallel sections -- 01-March-2011 * Huge refactoring of the code. Removed Step.replace_vars() methods and instead added a 'phase' parameter to execute. This makes the code simpler and reduces some duplication. Testing is now done by using ``step.exectute(..., phase = test)`` and execution by using ``step.exectute(..., phase = run)``. * Escape and in the output of commands. * Add many new tests overall coverage now 95%. * Added debug option (prints tracebacks on error). * Fixed `issue 1 http://code.google.com/p/betterbatch/issues/detail?id=1`_ If you want to check at the home page. If you find an bug or have a suggestions then please log an issue at http://code.google.com/p/betterbatch/issues/entry Thanks Mark PA HREF=http://code.google.com/p/betterbatch/;BetterBatch 0.9.5/A Powerful, safe and simple batch language. (01-Mar-2010) -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Pygments 1.3 Schneeglöckchen released
I've just uploaded the Pygments 1.3 packages to CheeseShop. Pygments is a generic syntax highlighter written in Python. Download it from http://pypi.python.org/pypi/Pygments, or look at the demonstration at http://pygments.org/demo. As always, many thanks go to Tim Hatch for writing or integrating many of the bug fixes and new features in this release. Of course, thanks to all other contributors too! Feature changelog: - Added the ``ensurenl`` lexer option, which can be used to suppress the automatic addition of a newline to the lexer input. - Lexers added: * Ada * Coldfusion * Modula-2 * haXe * R console * Objective-J * Haml and Sass * CoffeeScript - Enhanced reStructuredText highlighting. - Added support for PHP 5.3 namespaces in the PHP lexer. - Added a bash completion script for `pygmentize`, to the external/ directory (#466). Enjoy, Georg -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
[ANN] argparse 1.1 - Command-line parsing library
=== Announcing argparse 1.1 === The argparse module provides an easy, declarative interface for creating command line tools, which knows how to: * parse the arguments and flags from sys.argv * convert arg strings into objects for your program * format and print informative help messages * and much more... The argparse module improves on the standard library optparse module in a number of ways including: * handling positional arguments * supporting sub-commands * allowing alternative option prefixes like + and / * handling zero-or-more and one-or-more style arguments * producing more informative usage messages * providing a much simpler interface for custom types and actions Download argparse = The argparse homepage has links for source, MSI and single file distributions of argparse: http://code.google.com/p/argparse/ About this release == This is the final release of argparse before its move to the Python 2.7 and 3.2 standard libraries. Major enhancements in this release: * ArgumentParser(..., version=XXX) is deprecated. Instead, you should use add_argument(..., action='version') which is more flexible and does not force you to accept -v/--version as your version flags. * Usage and help (but not version) messages are now written to stdout instead of stderr, consistent with most existing programs. * User defined types passed as a type= argument can now raise an ArgumentTypeError to provide a custom error message. * Namespace objects now support containment, e.g. 'foo' in args. Various bugs were also squashed, e.g. from argparse import * now works. See the news file for detailed information: http://argparse.googlecode.com/svn/tags/r11/NEWS.txt Enjoy! Steve -- Where did you get that preposterous hypothesis? Did Steve tell you that? --- The Hiphopopotamus -- http://mail.python.org/mailman/listinfo/python-list
Re: Six Minutes and fourty two seconds
Tobiah wrote: Now that I use python, this is the amount of time per day that I spend adding forgotten semicolons while debugging other languages. What compels you to write Python code without semicolons? Frederic -- http://mail.python.org/mailman/listinfo/python-list
Detecting new removable drives in Linux
Hello, I'm trying to write a script which detects when a new removable drive is connected to the computer. On #python I was advised to use the dbus-bindings. However the documentation on this is limited. Does anyone know of an example of how I can detect new removable drives? Thanks in advance! Regards, Bart -- http://mail.python.org/mailman/listinfo/python-list
Re: How to use python to register a service (an existing .exe file)
Aahz wrote: In article 4b79e28c$0$4610$426a7...@news.free.fr, News123 news...@free.fr wrote: Is there a python way to register new windows services. I am aware of the instsrv.exe program, which can be used to install services. I could use subprocess.Popen to call instsrv.exe service_name program.exe but wondered, whether there's already an existing function. Use the win32 package. Indeed, there's some intersting code in this area here: http://svn.zope.org/Zope/trunk/src/nt_svcutils/service.py?rev=104819view=auto http://svn.zope.org/Zope/trunk/src/Zope2/Startup/zopectl.py?rev=105396view=auto ...particularly in the do_install function in the latter... Chris -- Simplistix - Content Management, Batch Processing Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
MRAB wrote: Gregory Ewing wrote: Mel wrote: You could think of it as a not bad use of the design principle Clear The Simple Stuff Out Of The Way First. Destinations are commonly a lot simpler than sources That's not usually true in assembly languages, though, where the source and destination are both very restricted and often about the same complexity. That's not to say that right-to-left is the wrong way to do it in an assembly language, but there are less misleading words than move that could be used. Z80 assembly language uses load, which makes things considerably clearer: LD A, B ; load A with B Some processors distinguish between load (memory to register) and store (register to memory), and the destination and LHS operand of binary operations might be the same register, for example: CLC ; clear the carry LDA first ; accumulator := byte at first ADCA second ; accumulator := accumulator + byte at second + carry STA result ; byte at third := accumulator Guys, you sound like people arguing about old school TV show / series like star treck :-) - He was wearing a blue suit ! - Check episode number 29, he appeared with a pink one! I'm glad I'm too young to had to code in assembler, or to bear the vision of those unlikely space suits from the 70's ;-) JM -- http://mail.python.org/mailman/listinfo/python-list
pythonpath
Sorry for my stupid question if i have to load module from a folder i
have to append it to the sys path the folder?
ex:
if my folder module is /home/lucak904/Scrivania/Luca/enigma2
i do this :
import sys
sys.path.append('/home/lucak904/Scrivania/Luca/enigma2')
If this is correct why when i write:
form enigma2 import *
i get no module named enigma2
Thanks
Luca
I'm under linux
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Re: Starting Python from the terminal with no welcome message
Tim Chase a écrit : bash$ python -ic to get a python shell without the banner. Works fine. thanks a lot. -- http://mail.python.org/mailman/listinfo/python-list
Re: taking python enterprise level?...
On Feb 25, 12:21 pm, Martin P. Hellwig martin.hell...@dcuktec.org wrote: On 02/25/10 10:26, simn_stv wrote: cut what i am concerned about is scalability and efficiency, well, as far as the 'core' is concerned. would python be able to manage giving me a solid 'core' and will i be able to use python provide any API i would like to implement?... cut Python isn't the most efficient language, the assembler provided by the maker of your CPU probably is the best you can get, cut LOL...;), yeah right, the mere thought of writing assembler instructions is SCARY!! everything after that is a trade-off between performance and flexibility (flexible in the most flexible sense of the word :-)). That being said, for me, Python (well actually any turing complete programming language), is more like a box of lego with infinite amount of pieces. Scalability and API issues are the same as the shape and function of the model your making with lego. Sure some type of pieces might be more suited than other types but since you can simulate any type of piece with the ones that are already present, you are more limited by your imagination than by the language. So in short, I don't see any serious problems using Python, I have used it in Enterprise environments without any problems but than again I was aware not to use it for numerical intensive parts without the use of 3rd party libraries like numpy. Which for me resulted in not doing the compression of a database delta's in pure python but to offload that to a more suitable external program, still controlled from Python though. -- mph -- http://mail.python.org/mailman/listinfo/python-list
Re: pythonpath
Sorry for my stupid question if i have to load module from a folder ihave
to append it to the sys path the folder?
ex:
if my folder module is /home/lucak904/Scrivania/Luca/enigma2
i do this :
import sys
sys.path.append('/home/lucak904/Scrivania/Luca/enigma2')
If this is correct why when i write:
form enigma2 import *
i get no module named enigma2
is the folder module /home/lucak904/Scrivania/Luca/enigma2.py? i think
the extension is necessary .
--
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Re: taking python enterprise level?...
On Feb 25, 5:18 pm, D'Arcy J.M. Cain da...@druid.net wrote: On Thu, 25 Feb 2010 15:29:34 + Martin P. Hellwig martin.hell...@dcuktec.org wrote: On 02/25/10 13:58, D'Arcy J.M. Cain wrote: On Thu, 25 Feb 2010 02:26:18 -0800 (PST) cut Our biggest problem was in a network heavy element of the app and that was low level TCP/IP stuff that rather than being Python's problem was something we used Python to fix. cut Out off interest, could you elaborate on that? Somewhat - there is an NDA so I can't give exact details. It was crucial to our app that we sync up databases in Canada and the US (later Britain, Europe and Japan) in real time with those transactions. Our problem was that even though our two server systems were on the backbone, indeed with the same major carrier, we could not keep them in sync. We were taking way to long to transact an update across the network. The problem had to do with the way TCP/IP works, especially closer to the core. Our provider was collecting data and sending it only after filling a buffer or after a timeout. The timeout was short so it wouldn't normally be noticed and in most cases (web pages e.g.) the connection is opened, data is pushed and the connection is closed so the buffer is flushed immediately. Our patterns were different so we were hitting the timeout on every single transaction and there was no way we would have been able to keep up. Our first crack at fixing this was to simply add garbage to the packet we were sending. Making the packets an order of magnitude bigger sped up the proccessing dramatically. That wasn't a very clean solution though so we looked for a better way. That better way turned out to asynchronous update transactions. All we did was keep feeding updates to the remote site and forget about ACKS. We then had a second process which handled ACKS and tracked which packets had been properly transferred. The system had IDs on each update and retries happened if ACKS didn't happen soon enough. Naturally we ignored ACKS that we had already processed. All of the above (and much more complexity not even discussed here) was handled by Python code and database manipulation. There were a few bumps along the way but overall it worked fine. If we were using C or even assembler we would not have sped up anything and the solution we came up with would have been horrendous to code. As it was I and my chief programmer locked ourselves in the boardroom and had a working solution before the day was out. sure it wouldnt have sped it up a bit, even a bit?; probably the development and maintenance time would be a nightmare but it should speed the app up a bit... Python wins again. -- D'Arcy J.M. Cain da...@druid.net | Democracy is three wolveshttp://www.druid.net/darcy/ | and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. seriously added to the reputation of python, from my own perspective...kudos python! -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting new removable drives in Linux
On Mon, 2010-03-01 at 10:48 +0100, Bart Smeets wrote: Hello, I'm trying to write a script which detects when a new removable drive is connected to the computer. On #python I was advised to use the dbus-bindings. However the documentation on this is limited. Does anyone know of an example of how I can detect new removable drives? The documentation does suck and, at least for the python bindings, is horribly outdated. Also, the python bindings for dbus are not as pythonic as they could be. I was working on a python/dbus program a while back and basically had to resort to looking at the source of a program that did, or almost did, what I wanted and using that as an example. You may even want to look at C sources as I don't think the python bindings are that much different. HTH, -a -- http://mail.python.org/mailman/listinfo/python-list
Re: Sample code usable Tkinter listbox
* rantingrick:
kw.setdefault('activestyle', 'none')
Hm, let me steal this line... Thanks!
Cheers,
- Alf
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Re: pythonpath
On Mon, 2010-03-01 at 02:48 -0800, luca72 wrote:
Sorry for my stupid question if i have to load module from a folder i
have to append it to the sys path the folder?
ex:
if my folder module is /home/lucak904/Scrivania/Luca/enigma2
i do this :
import sys
sys.path.append('/home/lucak904/Scrivania/Luca/enigma2')
If this is correct why when i write:
form enigma2 import *
i get no module named enigma2
There are two reasons for this:
1. enigma2 is not in your namespace. What's inside enigma is. For
example, you can't say from site-packages import * because
Python doesn't look at site-packages. It looks at what's
inside site-packages. If you wanted enigma2 to be in your
namespace, you should add /home/lucak904/Scrivania/Luca to your
system path.
2. Even if you did above, it may not work because enigma2 is a
directory. Remember from x import * only works for modules and
packages, so if you want enigma2 to be a package, remember to
add an (empty) __init__.py to the directory.
Hope this helps.
-a
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Re: taking python enterprise level?...
On Feb 25, 5:18 pm, D'Arcy J.M. Cain da...@druid.net wrote: On Thu, 25 Feb 2010 15:29:34 + Martin P. Hellwig martin.hell...@dcuktec.org wrote: On 02/25/10 13:58, D'Arcy J.M. Cain wrote: On Thu, 25 Feb 2010 02:26:18 -0800 (PST) cut Our biggest problem was in a network heavy element of the app and that was low level TCP/IP stuff that rather than being Python's problem was something we used Python to fix. cut Out off interest, could you elaborate on that? Somewhat - there is an NDA so I can't give exact details. It was crucial to our app that we sync up databases in Canada and the US (later Britain, Europe and Japan) in real time with those transactions. Our problem was that even though our two server systems were on the backbone, indeed with the same major carrier, we could not keep them in sync. We were taking way to long to transact an update across the network. The problem had to do with the way TCP/IP works, especially closer to the core. Our provider was collecting data and sending it only after filling a buffer or after a timeout. The timeout was short so it wouldn't normally be noticed and in most cases (web pages e.g.) the connection is opened, data is pushed and the connection is closed so the buffer is flushed immediately. Our patterns were different so we were hitting the timeout on every single transaction and there was no way we would have been able to keep up. Our first crack at fixing this was to simply add garbage to the packet we were sending. Making the packets an order of magnitude bigger sped up the proccessing dramatically. That wasn't a very clean solution though so we looked for a better way. That better way turned out to asynchronous update transactions. All we did was keep feeding updates to the remote site and forget about ACKS. We then had a second process which handled ACKS and tracked which packets had been properly transferred. The system had IDs on each update and retries happened if ACKS didn't happen soon enough. Naturally we ignored ACKS that we had already processed. All of the above (and much more complexity not even discussed here) was handled by Python code and database manipulation. There were a few bumps along the way but overall it worked fine. If we were using C or even assembler we would not have sped up anything and the solution we came up with would have been horrendous to code. As it was I and my chief programmer locked ourselves in the boardroom and had a working solution before the day was out. sure it wouldnt have sped it up a bit, even a bit?; probably the development and maintenance time would be a nightmare but it should speed the app up a bit... Python wins again. -- D'Arcy J.M. Cain da...@druid.net | Democracy is three wolveshttp://www.druid.net/darcy/ | and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. seriously added to the reputation of python, from my own perspective...kudos python! -- http://mail.python.org/mailman/listinfo/python-list
Re: taking python enterprise level?...
On Feb 26, 10:32 am, mdipierro massimodipierr...@gmail.com wrote: 100,000 hits a day is not a low. I get that some day on my web server without problem and without one request dropped. Most frameworks web2py, Django, Pylons can handle that kind of load since Python is not the bottle neck. taking a look at django right now, doesnt look too bad from where im standing, maybe when i get into the code i'd run into some issues that would cause some headaches!! You have to follow some tricks: 1) have the web server serve static pages directly and set the pragma cache expire to one month 2) cache all pages that do not have forms for at least few minutes 3) avoid database joins but this would probably be to the detriment of my database design, which is a no-no as far as im concerned. The way the tables would be structured requires 'joins' when querying the db; or could you elaborate a little?? 4) use a server with at least 512KB Ram. hmmm...!, still thinking about what you mean by this statement also. 5) if you pages are large, use gzip compression If you develop your app with the web2py framework, you always have the option to deploy on the Google App Engine. If you can live with their constraints you should have no scalability problems. Massimo On Feb 25, 4:26 am, simn_stv nany...@googlemail.com wrote: hello people, i have been reading posts on this group for quite some time now and many, if not all (actually not all!), seem quite interesting. i plan to build an application, a network based application that i estimate (and seriously hope) would get as many as 100, 000 hits a day (hehe,...my dad always told me to 'AIM HIGH' ;0), not some 'facebook' or anything like it, its mainly for a financial transactions which gets pretty busy... so my question is this would anyone have anything that would make python a little less of a serious candidate (cos it already is) and the options may be to use some other languages (maybe java, C (oh God))...i am into a bit of php and building API's in php would not be the hard part, what i am concerned about is scalability and efficiency, well, as far as the 'core' is concerned. would python be able to manage giving me a solid 'core' and will i be able to use python provide any API i would like to implement?... im sorry if my subject was not as clear as probably should be!. i guess this should be the best place to ask this sort of thing, hope im so right. Thanks thanks for the feedback... -- http://mail.python.org/mailman/listinfo/python-list
Re: Detecting new removable drives in Linux
Bart Smeets, 01.03.2010 10:48: I'm trying to write a script which detects when a new removable drive is connected to the computer. On #python I was advised to use the dbus-bindings. However the documentation on this is limited. Does anyone know of an example of how I can detect new removable drives? You could execute a script from HAL, e.g. using halevt, and let the script communicate with your program. http://www.nongnu.org/halevt/ Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
Andreas Waldenburger use...@geekmail.invalid wrote: But as I said: a) I am (we are) not in a position to impose this (We don't work with the code, we just run the software). I personally believe that the end users have _every_ right to impose quality requirements on code used within their business...although I may not bring this up in front of them at meetings :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
On Mon, 1 Mar 2010 05:01:49 -0800 (PST) alex23 wuwe...@gmail.com wrote: Andreas Waldenburger use...@geekmail.invalid wrote: But as I said: a) I am (we are) not in a position to impose this (We don't work with the code, we just run the software). I personally believe that the end users have _every_ right to impose quality requirements on code used within their business...although I may not bring this up in front of them at meetings :) Huh? That's like demanding a certain type of truck or vehicle maintenance plan from a trucking company. Sure, you *could* do it, but that effectively only limits your options. I think there should be a clear separation of concerns here. /W -- INVALID? DE! -- http://mail.python.org/mailman/listinfo/python-list
connect with me
dear guys you can do subscribe with site easily- http://freelivestreamonlinepctv.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
ANN: A new version (0.2.4) of the Python module which wraps GnuPG has been released.
A new version of the Python module which wraps GnuPG has been
released.
What Changed?
=
This is a minor enhancement release. See the project website (
http://code.google.com/p/python-gnupg/ ) for more information.
The current version passes all tests on Windows (Python 2.4, 2.5, 2.6,
3.1, Jython 2.5.1) and Ubuntu (Python 2.4, 2.5, 2.6, 3.0, Jython
2.5.1).
What Does It Do?
The gnupg module allows Python programs to make use of the
functionality provided by the Gnu Privacy Guard (abbreviated GPG or
GnuPG). Using this module, Python programs can encrypt and decrypt
data, digitally sign documents and verify digital signatures, manage
(generate, list and delete) encryption keys, using proven Public Key
Infrastructure (PKI) encryption technology based on OpenPGP.
This module is expected to be used with Python versions = 2.4, as it
makes use of the subprocess module which appeared in that version of
Python. This module is a newer version derived from earlier work by
Andrew Kuchling, Richard Jones and Steve Traugott.
A test suite using unittest is included with the source distribution.
Simple usage:
import gnupg
gpg = gnupg.GPG(gnupghome='/path/to/keyring/directory')
gpg.list_keys()
[{
...
'fingerprint': 'F819EE7705497D73E3CCEE65197D5DAC68F1AAB2',
'keyid': '197D5DAC68F1AAB2',
'length': '1024',
'type': 'pub',
'uids': ['', 'Gary Gross (A test user) gary.gr...@gamma.com']},
{
...
'fingerprint': '37F24DD4B918CC264D4F31D60C5FEFA7A921FC4A',
'keyid': '0C5FEFA7A921FC4A',
'length': '1024',
...
'uids': ['', 'Danny Davis (A test user) danny.da...@delta.com']}]
encrypted = gpg.encrypt(Hello, world!, ['0C5FEFA7A921FC4A'])
str(encrypted)
'-BEGIN PGP MESSAGE-\nVersion: GnuPG v1.4.9 (GNU/Linux)\n
\nhQIOA/6NHMDTXUwcEAf
...
-END PGP MESSAGE-\n'
decrypted = gpg.decrypt(str(encrypted), passphrase='secret')
str(decrypted)
'Hello, world!'
signed = gpg.sign(Goodbye, world!, passphrase='secret')
verified = gpg.verify(str(signed))
print Verified if verified else Not verified
'Verified'
For more information, visit http://code.google.com/p/python-gnupg/ -
as always, your feedback is most welcome (especially bug reports,
patches and suggestions for improvement). Enjoy!
Cheers
Vinay Sajip
Red Dove Consultants Ltd.
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python socket service related question!
Hello,All
im totally new to socket programming in python. i was read some tutorial and
manual, but i didn't found what i want to make python related socket script
in manual or tutorial.
i want to make socket script which can send some info to server and also
receive some info from server. For example, i want to send my login
information to server, and want to receive result reply from server.
but i have no idea..how to send my login information(id and password) to
server.
i was captured with wireshark, some process to send login info to server.
and i was found port number is 5300 and server ip is 58.225.56.152
and i was send id is 'aaa' and password 'bbb' and i was received
'USER NOT FOUND' result from server.
how can i make this kind of process with python socket ?
if anyone help me some reference or some example or anything help much
appreciate!
00 50 56 f2 c8 cc 00 0c 29 a8 f8 c0 08 00 45 00 .PV.).E.
0010 00 e2 2a 19 40 00 80 06 d0 55 c0 a8 cb 85 3a e1 @u:.
0020 38 98 05 f3 15 9a b9 86 62 7b 0d ab 0f ba 50 18 8...b{P.
0030 fa f0 26 14 00 00 50 54 3f 09 a2 91 7f 13 00 00 .PT?...
0040 00 1f 14 00 02 00 00 00 00 00 00 00 07 00 00 00
0050 61 61 61 61 61 61 61 50 54 3f 09 a2 91 7f 8b 00 aaaPT?..
0060 00 00 1f 15 00 08 00 00 00 07 00 00 00 61 61 61 .aaa
0070 61 61 61 61 07 00 00 00 62 62 62 62 62 62 62 01 bbb.
0080 00 00 00 31 02 00 00 00 4b 52 0f 00 00 00 31 39 ...1KR19
0090 32 2e 31 36 38 2e 32 30 33 2e 31 33 33 30 00 00 2.168.203.1330..
00a0 00 4d 69 63 72 6f 73 6f 66 74 20 57 69 6e 64 6f .Microsoft Windo
00b0 77 73 20 58 50 20 50 72 6f 66 65 73 73 69 6f 6e ws XP Profession
00c0 61 6c 20 53 65 72 76 69 63 65 20 50 61 63 6b 20 al Service Pack
00d0 32 14 00 00 00 31 30 30 31 33 30 30 35 33 31 35 210013005315
00e0 37 38 33 37 32 30 31 32 33 03 00 00 00 34 37 30 783720123470
00 0c 29 a8 f8 c0 00 50 56 f2 c8 cc 08 00 45 00 ..)PV.E.
0010 00 28 ae 37 00 00 80 06 8c f1 3a e1 38 98 c0 a8 .(.7..:.8...
0020 cb 85 15 9a 05 f3 0d ab 0f ba b9 86 63 35 50 10 c5P.
0030 fa f0 5f 8e 00 00 00 00 00 00 00 00 .._.
00 0c 29 a8 f8 c0 00 50 56 f2 c8 cc 08 00 45 00 ..)PV.E.
0010 00 4c ae 38 00 00 80 06 8c cc 3a e1 38 98 c0 a8 .L.8..:.8...
0020 cb 85 15 9a 05 f3 0d ab 0f ba b9 86 63 35 50 18 c5P.
0030 fa f0 3e 75 00 00 50 54 3f 09 a2 91 7f 16 00 00 ..u..PT?...
0040 00 1f 18 00 01 00 00 00 0e 00 00 00 55 73 65 72 User
0050 20 4e 6f 74 20 46 6f 75 6e 64 Not Found
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Permission Problem
Hi;
I encountered and solved this problem before with the help of the list, but
it's back, and I've reviewed and done everything I was shown to do last
time, so I'm lost. Here's the script:
#!/usr/bin/python
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from login import login
import MySQLdb
import re, string
import fpformat
form = cgi.FieldStorage()
width = form.getfirst('width')
lines = '''
#!/usr/bin/python
return %s''' % width
f = 'width.py'
try:
os.remove(f)
except OSError:
pass
f = open(f, 'w')
f.writelines(lines)
f.close()
Simple enough. Here's the permissions:
drwxrwxrwx 31 root root 4096 Feb 23 04:57 ..
-rwxrwxrwx 1 root root390 Mar 1 05:52 preload.py
All loaded up deliberately to try and get it to work. Here's the error:
/var/www/html/globalsolutionsgroup.vi/preload.py
21 except OSError:
22 pass
23 f = open(f, 'w')
24 f.writelines(lines)
25 f.close()
f = 'width.py', builtin open = type 'file'
IOError: [Errno 13] Permission denied: 'width.py'
args = (13, 'Permission denied')
errno = 13
filename = 'width.py'
strerror = 'Permission denied'
What'd I do wrong?
TIA,
beno
--
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http://logos.13gems.com/
--
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Class attributes / methods lost?
Hi guys,
I am building a nested data structure with the following compontens:
class Item:
def __init__(self, pId, pChange, pComment):
self.ID = pId
self.Delta = pChange
self.Comment = pComment
def PrintItem(self):
str = '%s,%s,%s'%(self.ID,self.Delta,self.comment)
return str
class Package:
def __init__(self, pSerial, pDate, pOwner, pSchema):
self.serial = pSerial
self.date = pDate
self.owner = pOwner
self.schema = pSchema
self.items = []
def insertItem(self, pItem):
self.items.append(pItem)
def printPackage(self):
lines = []
str = '%s,%s,%s,%s'%(self.serial,self.date,self.owner,self.schema)
number = self.items.length
for idx in xrange(number):
line = ''
istr = self.items[idx].PrintItem()
line = str + ',' + istr
lines.append(line)
return lines
The above structure is processed with next code:
size = len(packages)
package = None
for index in xrange(size):
logger.info('PrettyPrinting package id=%d',index)
oplines = []
oplines = packages[index].printPackage()
for i in xrange(oplines.length):
data.append(oplines[i])
I've got the next error message:
' Traceback (most recent call last):
File XmlHistory_orig.py, line 203, in ?
oplines = packages[index].printPackage()
TypeError: unbound method printPackage() must be called with Package
instance as first argument (got nothing instead) '
I did give a try to access the fields directly
packages = []
data = []
size = len(packages)
for index in xrange(size):
str =
'%s,%s,%s,%s'%(packages[index].serial,packages[index].date,packages[index].owner,packages[index].schema)
itemnum = len(packages[index].items)
oplines = []
for itemIndx in xrange(itemnum):
element =
'%s,%s,%s'%(packages[index].items[itemIdx].ID,packages[index].items[itemIdx].Delta,packages[index].items[itemIdx].comment)
oplines.append(str + ','+elemt)
Error:
Traceback (most recent call last):
File XmlHistory.py, line 204, in ?
str =
'%s,%s,%s,%s'%(packages[index].serial,packages[index].date,packages[index].owner,packages[index].schema)
AttributeError: class Package has no attribute 'serial'
The strange in this issue for me, that I do not see why are the class
methods and fields lost.
Any idea is wellcome.
Gabor
--
Linux: Choice of a GNU Generation
--
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Re: Class attributes / methods lost?
Gabor Urban wrote: I am building a nested data structure with the following compontens: snip Any idea is wellcome. The error messages suggest that you are using classes where you should be using class instances, but you don't provide the code where this problem originates. The code you do give looks like a very literal and incomplete conversion from Java. Rather than go into the details I suggest that you have a look at the Tutorial (and PEP 8) before you proceed. http://docs.python.org/tutorial/index.html http://www.python.org/dev/peps/pep-0008/ Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: taking python enterprise level?...
On Mon, 1 Mar 2010 04:11:07 -0800 (PST) simn_stv nany...@googlemail.com wrote: All of the above (and much more complexity not even discussed here) was handled by Python code and database manipulation. There were a few bumps along the way but overall it worked fine. If we were using C or even assembler we would not have sped up anything and the solution we came up with would have been horrendous to code. As it was I and my chief programmer locked ourselves in the boardroom and had a working solution before the day was out. sure it wouldnt have sped it up a bit, even a bit?; probably the development and maintenance time would be a nightmare but it should speed the app up a bit... What do you mean by even a bit? The bulk of the time is in sending bits on the wire. Computer time was always negligible in this situation. Yes, I can write all of my applications in assembler to get a 0.01% increase in speed but who cares? If you have decent algorithms in place then 99% of the time I/O will be your bottleneck and if it isn't then you have a compute heavy problem that assembler isn't going to fix. And even if I get a 100% increase in speed, I still lose. Computer time is cheaper than programmer time by so many orders of magnitude that it isn't even worh factoring in the speedup. -- D'Arcy J.M. Cain da...@druid.net | Democracy is three wolves http://www.druid.net/darcy/| and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. -- http://mail.python.org/mailman/listinfo/python-list
Re: taking python enterprise level?...
On Feb 26, 10:19 am, Diez B. Roggisch de...@nospam.web.de wrote: Am 26.02.10 05:01, schrieb D'Arcy J.M. Cain: On Fri, 26 Feb 2010 01:12:00 +0100 Diez B. Roggischde...@nospam.web.de wrote: That better way turned out to asynchronous update transactions. All we did was keep feeding updates to the remote site and forget about ACKS. We then had a second process which handled ACKS and tracked which packets had been properly transferred. The system had IDs on each update and retries happened if ACKS didn't happen soon enough. Naturally we ignored ACKS that we had already processed. sounds like using UDP to me, of course with a protocol on top (namely the one you implemented). Any reason you sticked to TCP instead? TCP does a great job of delivering a stream of data in order and handling the retries. The app really was connection oriented and we saw no reason to emulate that over an unconnected protocol. There were other wheels to reinvent that were more important. So when you talk about ACKs, you don't mean these on the TCP-level (darn, whatever iso-level that is...), but on some higher level? Diez i think its on the TCP that he's referring to or is it?... if it is, that means he's doing some 'mean' network level scripting, impressive...but i never thought python could go that deep in network programming!... -- http://mail.python.org/mailman/listinfo/python-list
Re: taking python enterprise level?...
On Mon, 1 Mar 2010 06:42:28 -0800 (PST) simn_stv nany...@googlemail.com wrote: On Feb 26, 10:19 am, Diez B. Roggisch de...@nospam.web.de wrote: So when you talk about ACKs, you don't mean these on the TCP-level (darn, whatever iso-level that is...), but on some higher level? i think its on the TCP that he's referring to or is it?... No, I mean in our own application layer. if it is, that means he's doing some 'mean' network level scripting, impressive...but i never thought python could go that deep in network programming!... What I meant was that we just keep sending packets which TCP/IP keeps in order for us by reassembling out-of-order and retransmitted packets. Asynchronously we sent back to our own application an ACK that our app level packet was finally received. It's a sliding window protocol. http://en.wikipedia.org/wiki/Sliding_Window_Protocol -- D'Arcy J.M. Cain da...@druid.net | Democracy is three wolves http://www.druid.net/darcy/| and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. -- http://mail.python.org/mailman/listinfo/python-list
Re: Permission Problem
Never mind. I figured out my error.
beno
On Mon, Mar 1, 2010 at 10:02 AM, Victor Subervi victorsube...@gmail.comwrote:
Hi;
I encountered and solved this problem before with the help of the list, but
it's back, and I've reviewed and done everything I was shown to do last
time, so I'm lost. Here's the script:
#!/usr/bin/python
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from login import login
import MySQLdb
import re, string
import fpformat
form = cgi.FieldStorage()
width = form.getfirst('width')
lines = '''
#!/usr/bin/python
return %s''' % width
f = 'width.py'
try:
os.remove(f)
except OSError:
pass
f = open(f, 'w')
f.writelines(lines)
f.close()
Simple enough. Here's the permissions:
drwxrwxrwx 31 root root 4096 Feb 23 04:57 ..
-rwxrwxrwx 1 root root390 Mar 1 05:52 preload.py
All loaded up deliberately to try and get it to work. Here's the error:
/var/www/html/globalsolutionsgroup.vi/preload.py
21 except OSError:
22 pass
23 f = open(f, 'w')
24 f.writelines(lines)
25 f.close()
f = 'width.py', builtin open = type 'file'
IOError: [Errno 13] Permission denied: 'width.py'
args = (13, 'Permission denied')
errno = 13
filename = 'width.py'
strerror = 'Permission denied'
What'd I do wrong?
TIA,
beno
--
The Logos has come to bear
http://logos.13gems.com/
--
The Logos has come to bear
http://logos.13gems.com/
--
http://mail.python.org/mailman/listinfo/python-list
Re: Class attributes / methods lost?
Gabor Urban wrote:
Hi guys,
I am building a nested data structure with the following compontens:
class Item:
def __init__(self, pId, pChange, pComment):
self.ID = pId
self.Delta = pChange
self.Comment = pComment
def PrintItem(self):
str = '%s,%s,%s'%(self.ID,self.Delta,self.comment)
return str
class Package:
def __init__(self, pSerial, pDate, pOwner, pSchema):
self.serial = pSerial
self.date = pDate
self.owner = pOwner
self.schema = pSchema
self.items = []
def insertItem(self, pItem):
self.items.append(pItem)
def printPackage(self):
lines = []
str = '%s,%s,%s,%s'%(self.serial,self.date,self.owner,self.schema)
number = self.items.length
for idx in xrange(number):
line = ''
istr = self.items[idx].PrintItem()
line = str + ',' + istr
lines.append(line)
return lines
The above structure is processed with next code:
size = len(packages)
package = None
for index in xrange(size):
logger.info('PrettyPrinting package id=%d',index)
oplines = []
oplines = packages[index].printPackage()
for i in xrange(oplines.length):
data.append(oplines[i])
I've got the next error message:
' Traceback (most recent call last):
File XmlHistory_orig.py, line 203, in ?
oplines = packages[index].printPackage()
TypeError: unbound method printPackage() must be called with Package
instance as first argument (got nothing instead) '
I did give a try to access the fields directly
packages = []
data = []
size = len(packages)
for index in xrange(size):
str =
'%s,%s,%s,%s'%(packages[index].serial,packages[index].date,packages[index].owner,packages[index].schema)
itemnum = len(packages[index].items)
oplines = []
for itemIndx in xrange(itemnum):
element =
'%s,%s,%s'%(packages[index].items[itemIdx].ID,packages[index].items[itemIdx].Delta,packages[index].items[itemIdx].comment)
oplines.append(str + ','+elemt)
Error:
Traceback (most recent call last):
File XmlHistory.py, line 204, in ?
str =
'%s,%s,%s,%s'%(packages[index].serial,packages[index].date,packages[index].owner,packages[index].schema)
AttributeError: class Package has no attribute 'serial'
The strange in this issue for me, that I do not see why are the class
methods and fields lost.
Any idea is wellcome.
Gabor
Ok here are some suggestions :
1/ do not name a method PrintItem if the method does not print anything
(it does not)
2/ use the __str__ method to return a nice representation of your objects
3/ use pythonic iteration controls
4/ be consistant with your naming convention, your Item's attributes
start with an Uppercase letter, Package's attributes with a lowercase
one. (I suggest the lowercase)
class Item(object):
def __init__(self, pId, pChange, pComment):
self.id = pId
self.delta = pChange
self.comment = pComment
def __str__(self):
return self.__class__.__name__ + ':' + str(self.__dict__)
class Package(object):
def __init__(self, pSerial, pDate, pOwner, pSchema):
self.serial = pSerial
self.date = pDate
self.owner = pOwner
self.schema = pSchema
self.items = []
def insertItem(self, pItem):
self.items.append(pItem)
def __str__(self):
_dict = self.__dict__.copy()
_dict['items'] = [str(item) for item in self.items]
return self.__class__.__name__ + ':' + str(_dict)
i1 = Item('a', 'b', 'c')
i2 = Item('foo', 'bar', 'baz')
p = Package(1,2,3,4)
p.insertItem(i1)
p.insertItem(i2)
packages = [p]
for package in packages:
print package
Package:{'date': 2, 'owner': 3, 'serial': 1, 'schema': 4, 'items':
[Item:{'comment': 'c', 'id': 'a', 'delta': 'b'}, Item:{'comment':
'baz', 'id': 'foo', 'delta': 'bar'}]}
Regarding the error you get, it seems you've stored the class itself,
instead instances.
The error should be in the way you've built the package list, but you
did not provide the code.
JM
--
http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
Jean-Michel Pichavant wrote: MRAB wrote: Gregory Ewing wrote: Mel wrote: You could think of it as a not bad use of the design principle Clear The Simple Stuff Out Of The Way First. Destinations are commonly a lot simpler than sources That's not usually true in assembly languages, though, where the source and destination are both very restricted and often about the same complexity. That's not to say that right-to-left is the wrong way to do it in an assembly language, but there are less misleading words than move that could be used. Z80 assembly language uses load, which makes things considerably clearer: LD A, B ; load A with B Some processors distinguish between load (memory to register) and store (register to memory), and the destination and LHS operand of binary operations might be the same register, for example: CLC ; clear the carry LDA first ; accumulator := byte at first ADCA second ; accumulator := accumulator + byte at second + carry STA result ; byte at third := accumulator Guys, you sound like people arguing about old school TV show / series like star treck :-) - He was wearing a blue suit ! - Check episode number 29, he appeared with a pink one! I'm glad I'm too young to had to code in assembler, or to bear the vision of those unlikely space suits from the 70's ;-) Ah, yes, Star Trek (the original series). If they transported down to a planet and there was a man in a red shirt who you'd never seen before, he'd be the one to die! :-) BTW, the first programming I did was in hexadecimal (C4xx was LDI xx). -- http://mail.python.org/mailman/listinfo/python-list
Re: How to end TCP socket data while using readline()?
Thanks for the feedback.
Opening a separate file-obj for writing and for reading is just what I've
been trying, but I don't seem to get it to work. I'm new to python and I'm
not sure if I'm missing the intricacy of some command. Please help:
Here is my server snippet:
(conn, addr) = sock1.accept()# connected socket
print 'Client (localhost) port: ', addr[1]
cf = conn.makefile('r',0)# file obj for reading
lf = open('ccs.txt','w')
for linenum, line in enumerate(cf):# iterate over socket
lines
lf.write(line)
#sys.stdout.write(line)
print len(line)
cf.close()
stat = 'wrote %s lines to file.\n' %(linenum+1)
cff = conn.makefile('w',0) # file obj for writing
cff.writelines(stat) # cff.write(stat) does not work
either!!
cff.close()
lf.close()
conn.close()
print stat, DONE!
And here is the client that I have for it: (sfp is the local file object i
read from)
for line in sfp.readlines():
cf.write(line)
print len(line)
print 'done sending'
cf.close() #writing ends here
cff = s.makefile('r',0) # file obj for writing
for line in cff.readlines():
print line
cff.close()
sfp.close()
s.close()
The execution sends all the lines (and prints out the len(line) ) and then
stays waiting. THen when I manually terminate the client script, the server
script happily types the DONE! output.
Where is this protocol hanging up? Help much appreciated, with a small
explanation.
Cheers,
Arjun
On Sat, Feb 27, 2010 at 05:11, Cameron Simpson c...@zip.com.au wrote:
On 26Feb2010 10:39, Arjun arjun.che...@gmail.com wrote:
| Hi, I have a small script that runs a TCP server. A client connects to
| this server and transmits a stored file line-by-line, and then waits
| for a confirmation done. However, when I run them the first loop
| never really ends -- as the TCP server keeps expecting more data. I am
| using a file-like-object, and so somehow I have to communicate to the
| server that it is the end-of-file.
|
| here is some server code
| snip
| sock1.bind(('', port))
| print Listening at port: , port
| sock1.listen(1) # listening socket
| (conn, addr) = sock1.accept()# connected socket
| print 'Client (localhost) port: ', addr[1]
|
| cf = conn.makefile('r',0)# file like obj for socket
[...]
| print 'close'
| cf.flush()
| cf.close()
| sfp.close()
[...]
Too many files. It's not that hard! Or shouldn't be.
| So what I am wondering is:
|
| 1. Using a file-like object means that the socket becomes uni-
| directional, until the mode of the file object is changed from 'r' to
| 'w' (or vice versa). This seems inefficient, and rather unPythonesque.
| Can somebody tell me if there is a more elegant way of receiving all
| the lines from the client, and then sending a done message to the
| client?
Get the socket. It is a file descriptor (or in may be a python socket
object with a file descriptor inside).
Open _two_ file objects on it using
from_file = os.fdopen(fd_of_socket, r)
to_file = os.fdopen(fd_of_socket, w).
Use the same:
print to_file, 'close'
to_file.flush()
method as you're using already.
Read from to_file as needed.
The same scheme should work in both server and client:
Don't look for EOF, watch the input line flow.
You might need to use readline() instead of the file-by-line iteration
stuff,
which I seem to recall has some sort of problem handing out the latest
line.
Cheers,
--
Cameron Simpson c...@zip.com.au DoD#743
http://www.cskk.ezoshosting.com/cs/
It's better, when you're riding with someone you don't know so well, to
stick
to the inside line - it's easier to avoid the bits...
- Barry Sheene
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to end TCP socket data while using readline()?
It DOES seem like only when the connection socket is closed via conn.close()
that the data is flushed and the 'waiting' ends. So with the earlier
suggestion that I open one file-obj for reading and one for writing, I still
cannot acheive two-way communication because I need to close the connection
for it to actually occur completely!
My client waits after the done sending line indefinitely. Weird.
A
On Mon, Mar 1, 2010 at 16:35, Arjun Chennu arjun.che...@gmail.com wrote:
Thanks for the feedback.
Opening a separate file-obj for writing and for reading is just what I've
been trying, but I don't seem to get it to work. I'm new to python and I'm
not sure if I'm missing the intricacy of some command. Please help:
Here is my server snippet:
(conn, addr) = sock1.accept()# connected socket
print 'Client (localhost) port: ', addr[1]
cf = conn.makefile('r',0)# file obj for reading
lf = open('ccs.txt','w')
for linenum, line in enumerate(cf):# iterate over socket
lines
lf.write(line)
#sys.stdout.write(line)
print len(line)
cf.close()
stat = 'wrote %s lines to file.\n' %(linenum+1)
cff = conn.makefile('w',0) # file obj for writing
cff.writelines(stat) # cff.write(stat) does not work
either!!
cff.close()
lf.close()
conn.close()
print stat, DONE!
And here is the client that I have for it: (sfp is the local file object i
read from)
for line in sfp.readlines():
cf.write(line)
print len(line)
print 'done sending'
cf.close() #writing ends here
cff = s.makefile('r',0) # file obj for writing
for line in cff.readlines():
print line
cff.close()
sfp.close()
s.close()
The execution sends all the lines (and prints out the len(line) ) and then
stays waiting. THen when I manually terminate the client script, the server
script happily types the DONE! output.
Where is this protocol hanging up? Help much appreciated, with a small
explanation.
Cheers,
Arjun
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Feb 28, 9:18 pm, Steven D'Aprano Wait a minute... if JSON is too hard to edit, and RSON is a *superset* of JSON, that means by definition every JSON file is also a valid RSON file. Since JSON is too hard to manually edit, so is RSON. Well, Python is essentially a superset of JSON, with string escape handling being ever so slightly different, and using True instead of true, False instead of false, and None instead of null. YMMV, but I find it possible, even probable, to write Python that is far easier to edit than JSON, and in fact, I have used Python for configuration files that are only to be edited by programmers or other technical types. Come back when you actually have MANY users other than yourself using this is real-world projects. Until then, it is too early to even consider adding it the std library. Python comes with batteries included, but not experimental batteries that aren't even built yet, let alone proven that they work. I know that it is too early to be included in the library. But there is a chicken-and-egg problem. PEP 1 says you should circulate a design for discussion before writing code... I fully expect this sort of negative feedback, fully expect that it will be years (if ever) before the code makes it into the standard library, and yet I offer the design for your perusal, just on the slim chance that I might get a few constructive criticisms on the actual design to go along with all the silly strawmen reductio ad absurdum arguments by people who aren't even going to bother to read the thing. Best regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: loop through each line in a text file
On Feb 26, 6:19 pm, ru...@yahoo.com wrote:
On Feb 26, 2:21 pm, qtrimble qtrim...@gmail.com wrote:
On Feb 26, 4:14 pm, OdarR olivier.da...@gmail.com wrote:
snip
below is just a sample. There are well over 500,000 lines that need
processed.
wer1999001
31.2234 82.2367
37.9535 82.3456
wer1999002
31.2234 82.2367
37.9535 82.3456
did you try something as a working basis ?
Olivier
Yes but it's very simple -
fileIN = open(rC:\testing.txt, r)
for line in fileIN:
year = line[3:7]
day = line[7:10]
print year, day
This is good since i can get the year and day of year into a variable
but I haven't gotten any further.
How about something like (untested):
for line in fileIN:
if line.startswith (wer):
year = line[3:7]
day = line[7:10]
else:
print %s-%s %s % (year, day, line.strip())
You can adjust the details as needed...
Thanks to all of you for your suggestions.
This is what I have now. It may not be the most efficient or well
written script but it works! Thanks again!
fileIN = open(rC:\z_paul\ims1999.txt, r)
for line in fileIN:
if line.startswith(ims):
year = line[3:7]
day = line[7:10]
newfile = file(rC:\z_paul\output\ims + year + day + .txt,
wt)
newfile.write(YEAR,DOY,Y_COORD,X_COORD,TYPE\n)
else:
temp = line.replace(' ',',')
temp2 = temp.replace(', ',',')
newfile.write(year + , + day + temp2)
newfile.close()
--
http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
On 03/02/10 00:09, Andreas Waldenburger wrote: On Mon, 1 Mar 2010 05:01:49 -0800 (PST) alex23 wuwe...@gmail.com wrote: Andreas Waldenburger use...@geekmail.invalid wrote: But as I said: a) I am (we are) not in a position to impose this (We don't work with the code, we just run the software). I personally believe that the end users have _every_ right to impose quality requirements on code used within their business...although I may not bring this up in front of them at meetings :) Huh? That's like demanding a certain type of truck or vehicle maintenance plan from a trucking company. Sure, you *could* do it, but that effectively only limits your options. I think there should be a clear separation of concerns here. If my truck contains food items that spoils quickly, I would want to make sure that the trucking company takes good care of their refrigeration system and that the truck have as little chance as possible for breakdown due to poor maintenance. -- http://mail.python.org/mailman/listinfo/python-list
AOP decorator?
Hi, suppose my source code looks like: import aspect_xy class Basic(object, aspect_xy.Basic): pass # basic attributes and methods ... and the source code of aspect_xy.py is: class Basic(object): pass # aspect extra attributes and methods ... how can I write this with decorators? I want something like: --- import aspect_xy @aspect_xy # extra attributes and methods ... class Basic(object): pass # basic attributes and methods ... -- I want to write class decorator function, which: 1. Takes the basic class as parameter 2. Find the same class name in aspect_xy.py 3. Inherit the found aspect class Is it possible? -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 12:39 am, John Nagle na...@animats.com wrote: Patrick Maupin wrote: All: Finding .ini configuration files too limiting, JSON and XML to hard to manually edit, and YAML too complex to parse quickly, I have started work on a new configuration file parser. You're not supposed to edit those formats manually. John Nagle Opinions on that will vary, and as the saying goes, everybody is entitled to his own opinions, but not his own facts. I submit as fact that there are many initialization files in each of these formats, and I would be willing to place a wager that the majority of the people on this list have used a text editor to modify at least one file in this category at least once. IOW, in my opinion (and it is only an opinion, not a fact), you are actually helping to make the case that a better format is needed. Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Looking for an Application
A few months ago there was a post dealing with an application that would power scripts based on graphical snippets of the screen. Essentially, the script would look for a match with what you pasted into it. I don't recall the name of the application, but would like to try it. Does anyone remember what it is? Thanks, --greg -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for an Application
project sikuli : http://groups.csail.mit.edu/uid/sikuli/ On Mon, Mar 1, 2010 at 8:49 PM, Greg Lindstrom greg.lindst...@novasyshealth.com wrote: A few months ago there was a post dealing with an application that would power scripts based on graphical snippets of the screen. Essentially, the script would look for a match with what you pasted into it. I don't recall the name of the application, but would like to try it. Does anyone remember what it is? Thanks, --greg -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: DreamPie - The Python shell you've always dreamed about!
This is most probably a bug discovered in DreamPie 1.0 (See https://bugs.launchpad.net/dreampie/+bug/525652 ) Can you try to download DreamPie 1.0.1, and if it still happens, report a bug? Thanks! Noam -- http://mail.python.org/mailman/listinfo/python-list
Re: DreamPie - The Python shell you've always dreamed about!
Can you try DreamPie 1.0.1 and say if it still happens? There's a bug report system at launchpad.net/dreampie. Thanks, Noam -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On 2010-03-01 10:08 , Patrick Maupin wrote: On Feb 28, 9:18 pm, Steven D'Aprano Come back when you actually have MANY users other than yourself using this is real-world projects. Until then, it is too early to even consider adding it the std library. Python comes with batteries included, but not experimental batteries that aren't even built yet, let alone proven that they work. I know that it is too early to be included in the library. But there is a chicken-and-egg problem. PEP 1 says you should circulate a design for discussion before writing code... Ignore it. That comment really doesn't apply to this case. That's for things that only make sense in the language or standard library, like context managers. For libraries like this, Steven's summary is correct. It needs to have a useful life as a third party package for a few years before you should propose it for inclusion into the standard library. By all means, distribute a design document for comment before you implement things; it's a reasonable practice. But don't bother with a PEP yet. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for an Application
Greg Lindstrom greg.lindst...@novasyshealth.com writes: A few months ago there was a post dealing with an application that would power scripts based on graphical snippets of the screen. Essentially, the script would look for a match with what you pasted into it. I don't recall the name of the application, but would like to try it. Does anyone remember what it is? Thanks, --greg Project SIKULI? http://groups.csail.mit.edu/uid/sikuli/ -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: Sample code usable Tkinter listbox
On Mar 1, 6:19 am, Alf P. Steinbach al...@start.no wrote:
kw.setdefault('activestyle', 'none')
Hm, let me steal this line... Thanks!
Yes! the default activestyle is quite annoying!
--
http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
On Tue, 02 Mar 2010 03:18:30 +1100 Lie Ryan lie.1...@gmail.com wrote: On 03/02/10 00:09, Andreas Waldenburger wrote: On Mon, 1 Mar 2010 05:01:49 -0800 (PST) alex23 wuwe...@gmail.com wrote: Andreas Waldenburger use...@geekmail.invalid wrote: But as I said: a) I am (we are) not in a position to impose this (We don't work with the code, we just run the software). I personally believe that the end users have _every_ right to impose quality requirements on code used within their business...although I may not bring this up in front of them at meetings :) Huh? That's like demanding a certain type of truck or vehicle maintenance plan from a trucking company. Sure, you *could* do it, but that effectively only limits your options. I think there should be a clear separation of concerns here. If my truck contains food items that spoils quickly, I would want to make sure that the trucking company takes good care of their refrigeration system and that the truck have as little chance as possible for breakdown due to poor maintenance. My point was that it should not be any of your concern *how* they do it, only *that* they do it. Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? -- INVALID? DE! -- http://mail.python.org/mailman/listinfo/python-list
Is there a better way to do this?
Hi, I wrote a python script that uses pysvn to export projects from an svn repo I have. The repo has hundreds of projects in it with a directory structure that is pretty uniform however it's not exactly uniform because of the capitalization. I.e.: \root \project English \Stuff \Stuff 2 \Project Spanish \Stuff 3 \Stuff 4 My svn repo is case sensitive so if I try to get \root\project Spanish\Stuff 3 I get an error. Fixing the capitalization is not an option for me. My initial idea was to make a list of all the different ways project has been capitalized in my repo and try each one. The code looks like this: import pysvn def getstuff(stuffiwant, languageiwantitin): projects = (project %s/, Project %s/, pRojects %s/) c = pysvn.Client() for p in projects: exportme = p % languageiwantitin exportme = http://localhost/; + exportme + stuffiwant try: c.export(exportme, C:\\temp\\) break except pysvn.ClientError: print Not the right capitalization. # do the rest of the stuff I need to do. This works, but to me it seems like there has to be a better way of doing it. Any feedback or suggestions would be appreciated. Thanks, Matt -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 11:13 am, Robert Kern robert.k...@gmail.com wrote: Ignore it. That comment really doesn't apply to this case. That's for things that only make sense in the language or standard library, like context managers. For libraries like this, Steven's summary is correct. It needs to have a useful life as a third party package for a few years before you should propose it for inclusion into the standard library. By all means, distribute a design document for comment before you implement things; it's a reasonable practice. But don't bother with a PEP yet. So, I went and re-read PEP 1, and in the fine print it directs me to PEP 2. Mea culpa -- I though I understood the PEP. Nonetheless, the fact that I created what I call a PEP draft seems to have had more read into it than I meant. I will bear this in mind when I start future projects. I have a couple of projects, and contribute to another, which in no way should wind up in the standard library. But I find the lack of a good, up-to-date, configuration reader in the library to be an issue, which is why I had the temerity to try to start a discussion on what a good standard configuration file reader should be. Yes, I would like to create something compelling enough to go into the standard library. No, I don't expect it to wind up there for a very long time, if ever. BUT, at the same time, following the PEP format is very valuable for my project. It forces me to think more deeply about the problem I am solving and it forces me to write down some documentation. Really, it's no more burdensome than any other similar useful template. Or, to put it another way, it is my goal (which I may or may not be smart enough to reach) to write a module that anybody would want to use; that is good enough to put into the standard library. Whether this happens or not, one useful tool to help the module down that path (and produce a better module for me and other users even if it never becomes part of the standard library) is to think about what it takes to get into the standard library. Part of this involves writing the PEP. Writing a PEP is a good exercise; the format itself helps me to focus on important issues. So I was writing the contents of the PEP anyway, just for me. The real question, then, is when to release the PEP (vs. the code). I've already got some coding done, but it is not yet good enough to share, and if there is anybody else out there grappling with the same issues at this time, I would prefer not to go into production with it until they have had a chance to look over the design and offer insights and criticisms. Best regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
Andreas Waldenburger wrote: On Tue, 02 Mar 2010 03:18:30 +1100 Lie Ryan lie.1...@gmail.com wrote: On 03/02/10 00:09, Andreas Waldenburger wrote: On Mon, 1 Mar 2010 05:01:49 -0800 (PST) alex23 wuwe...@gmail.com wrote: Andreas Waldenburger use...@geekmail.invalid wrote: But as I said: a) I am (we are) not in a position to impose this (We don't work with the code, we just run the software). I personally believe that the end users have _every_ right to impose quality requirements on code used within their business...although I may not bring this up in front of them at meetings :) Huh? That's like demanding a certain type of truck or vehicle maintenance plan from a trucking company. Sure, you *could* do it, but that effectively only limits your options. I think there should be a clear separation of concerns here. If my truck contains food items that spoils quickly, I would want to make sure that the trucking company takes good care of their refrigeration system and that the truck have as little chance as possible for breakdown due to poor maintenance. My point was that it should not be any of your concern *how* they do it, only *that* they do it. Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? If you've bought the code and want to maintain it, you'd better make sure it's possible. By the way, the ISO 9001 standard ask for your out sourced processing to be compliant with your QA objectives, so if you care about your code, then you should care for the code you buy. JM -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
On 2010-03-01 11:22 , Andreas Waldenburger wrote: Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? Software usually needs to be maintained and extended over the course of its lifetime. The original team that wrote it may not be available in the future. Furthermore, docstrings are not comments. They become part of the function object and can be introspected at runtime. This is a very important tool when working with code at the interactive prompt and for the collection of API documentation. Comments are less useful than docstrings; the OP's complaint was that his programmers were putting the function documentation in other places than docstrings, rendering them less useful than they could have been. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a better way to do this?
Matt Mitchell mmitch...@transparent.com wrote in message news:mailman.65.1267464765.23598.python-l...@python.org... My initial idea was to make a list of all the different ways project has been capitalized in my repo and try each one. The code looks like this: I would use pysvn.Client.list to get a list of files at whatever directory level you require. Then you can do a case insensitive compare or whatever else. -- http://mail.python.org/mailman/listinfo/python-list
Re: Verifying My Troublesome Linkage Claim between Python and Win7
On 2/23/2010 6:04 PM, Aahz wrote: In articlehm0jn4$tn...@news.eternal-september.org, W. eWatsonwolftra...@invalid.com wrote: My claim is that if one creates a program in a folder that reads a file in the folder it and then copies it to another folder, it will read the data file in the first folder, and not a changed file in the new folder. I'd appreciate it if some w7 users could try this, and let me know what they find. My experience is that if one checks the properties of the copied file, it will point to the original py file and execute it and not the copy. I've no time to verify your specific claim and have no readily available proof for mine, but I've seen similar issues on Win7. AFAIK, this has nothing to do with Python. I've been away for several days and have no idea if anyone above figured this out. Likely not,since your post is at the end. Interesting about 'similar'. I'm pretty much done exploring every nook and cranny on this problem. It can be worked around. I will say that if I look at the properties of the copied file, it shows a shortcut tab that leads back to the original file. I have no recollection of making a shortcut, and always use Copy and Paste. Further, if I do create shortcut in W7, it adds -shortcut to the file suffix. I do not ever recall seeing that anywhere. I just tried it in XP, and it puts it in front of the name. -- http://mail.python.org/mailman/listinfo/python-list
[newbie] - python list into a sql query
Hi.
Can someone guide me into getting this to work? It's just really
querying a DB of an Autodiscovery tool to have a bunch of updated dns
files.
(Thought I'm still building the first script steps) I was able to
successfully query the DB against a single groupid, but am failing in
passing a list of integers into the sql query.
I'm failing miserably in,
sql = '''SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN
(
select hostid from hosts_groups WHERE groupid IN (' +
','.join(map(str, %s)) + ')''' % grp_range
with
_mysql_exceptions.ProgrammingError: (1064, You have an error in
your SQL syntax; check the manual that corresponds to your MySQL
server version for the right syntax to use near '' at line 1)
I'll gladly accept any other code change suggestion
#!/usr/bin/env python
import MySQLdb
import sys, os
import code
builder_path = '/opt/scripts/dns_builder'
grp_range = range(10,15)
try:
db = MySQLdb.connect(host=localhost,
user=tst,passwd=tst,db=tst_db )
except MySQLdb.Error, e:
print Error %d: %s % (e.args[0], e.args[1])
cursor = db.cursor()
sql = '''SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE
hostid IN (
select hostid from hosts_groups WHERE groupid IN (' +
','.join(map(str, %s)) + ')''' % grp_range
cursor.execute(sql)
f = open('%s/dns_unknown_list.txt', 'w+') % builder_path
data = cursor.fetchall()
for row in data:
ip = row[0]
host = row[1]
dns = row[2]
if host == dns:
#tmn
if ip[0][:10] in ('140.254.30','10.13.74.')
group1_file = open('%s/group1.zone', 'w') % builder_path
print group1_file, '''$ORIGIN group1
'''
print group1_file, '%s IN A%s' % (dns, ip)
elif ip[0][:3] in ('8.128.46.','6.128.101')
group2_file = open('%s/group2.zone', 'w') % builder_path
print group2_file, '''$ORIGIN group2
'''
print group2_file, '%s IN A%s' % (dns, ip)
else:
print f, 'unknown IN A%s' % ip
db.close()
input_file.close()
f.close()
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On 2010-03-01 11:34 , Patrick Maupin wrote: On Mar 1, 11:13 am, Robert Kernrobert.k...@gmail.com wrote: Ignore it. That comment really doesn't apply to this case. That's for things that only make sense in the language or standard library, like context managers. For libraries like this, Steven's summary is correct. It needs to have a useful life as a third party package for a few years before you should propose it for inclusion into the standard library. By all means, distribute a design document for comment before you implement things; it's a reasonable practice. But don't bother with a PEP yet. So, I went and re-read PEP 1, and in the fine print it directs me to PEP 2. Mea culpa -- I though I understood the PEP. Nonetheless, the fact that I created what I call a PEP draft seems to have had more read into it than I meant. I will bear this in mind when I start future projects. I have a couple of projects, and contribute to another, which in no way should wind up in the standard library. But I find the lack of a good, up-to-date, configuration reader in the library to be an issue, which is why I had the temerity to try to start a discussion on what a good standard configuration file reader should be. Yes, I would like to create something compelling enough to go into the standard library. No, I don't expect it to wind up there for a very long time, if ever. BUT, at the same time, following the PEP format is very valuable for my project. It forces me to think more deeply about the problem I am solving and it forces me to write down some documentation. Really, it's no more burdensome than any other similar useful template. Certainly. The PEP format is a useful one. I've used it myself for some numpy design documents. But can you see why people might get confused about your intentions when you call it a draft PEP and post it to python-dev? If you stop calling it a PEP and stop talking about putting it in the standard library, people will stop being distracted by those issues. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: Variable definition
John Posner wrote:
On 2/26/2010 6:32 PM, Raphael Mayoraz wrote:
Hello,
I'd like to define variables with some specific name that has a common
prefix.
Something like this:
varDic = {'red': 'a', 'green': 'b', 'blue': 'c'}
for key, value in varDic.iteritems():
'myPrefix' + key = value
No trick, just swap a new key-value pair for each existing pair:
for key, value in varDic.iteritems():
varDic[myPrefix + key] = value
del varDict[key]
Just make sure that *myPrefix* isn't an empty string!
-John
Thanks for your answer.
However, your solution changes the key name in the dictionary.
That's not what I want I need to do. What I want is to define a new
variable which name is define as a string: 'myPrefx' + key. In the example
I give, I would get 3 variables:
myPrefixred = a
myPrefixgreen = b
myPrefixblue = c
Raphael
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Patrick Maupin pmau...@gmail.com writes: it is my goal (which I may or may not be smart enough to reach) to write a module that anybody would want to use; But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
it is my goal (which I may or may not be smart enough to reach) to write a module that anybody would want to use; But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. And in case you are new here let me assure you that Paul is saying this with his full intention of being helpful to you. I also would think that working on such a project might be fun and educational for you but completely useless if you have users other than yourself in mind. Again, I'm trying to be helpful here, so you can focus on a project that is both fun/educational for you and also potentially useful for others. This RSON business is not one of them. Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: [newbie] - python list into a sql query
João wrote:
Hi.
Can someone guide me into getting this to work? It's just really
querying a DB of an Autodiscovery tool to have a bunch of updated dns
files.
(Thought I'm still building the first script steps) I was able to
successfully query the DB against a single groupid, but am failing in
passing a list of integers into the sql query.
I'm failing miserably in,
sql = '''SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN
(
select hostid from hosts_groups WHERE groupid IN (' +
','.join(map(str, %s)) + ')''' % grp_range
with
_mysql_exceptions.ProgrammingError: (1064, You have an error in
your SQL syntax; check the manual that corresponds to your MySQL
server version for the right syntax to use near '' at line 1)
[snip]
The triple-quoted string starts at:
'''SELECT ...
and ends at:
...)''' % grp_range
which means that the part where you do the .join is _inside_ the string.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 12:03 pm, Paul Rubin no.em...@nospam.invalid wrote: But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. The only in search of here is that, instead of working on a point solution for my particular problem, I am in search of a solution that is a bit more elegant and general, and that might help solve other people's problems too. If you are not one of those that has this sort of problem at this point in time, then feel free to kill- file this thread. Thanks, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: python shell crashing on paste
Thanks for responding Michel. It looks like its an issue with pyreadline - http://ipython.scipy.org/moin/PyReadline/Intro - causing the crash. I'm working with the author of it on trying to get the issue figured out. It's not related to UAC. -- --Leo On Feb 23, 10:41 pm, Michel Claveau - MVPenleverlesx_xx...@xmclavxeaux.com.invalid wrote: Hi! Where (directory) are you, when the problem come? Have you try with UAC disabled? @+ -- MCI -- http://mail.python.org/mailman/listinfo/python-list
Re: [newbie] - python list into a sql query
On Monday 01 March 2010 09:54:20 João wrote:
Hi.
Can someone guide me into getting this to work? It's just really
querying a DB of an Autodiscovery tool to have a bunch of updated dns
files.
I wouldn't be building SQL queries by hand if I could avoid it -- is this just
a few one-off scripts or a project that could usefully benefit from a database
abstraction layer (like SQLAlchemy: http://www.sqlalchemy.org)?
sql = '''SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN
(
select hostid from hosts_groups WHERE groupid IN (' +
','.join(map(str, %s)) + ')''' % grp_range
I'm not sure what you expect this to evaluate to?
# grp_range = [1, 2, 3] # dummy data
# sql = '''SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN
... (
... SELECT hostid FROM hosts_groups WHERE groupid IN (' +
... ','.join(map(str, %s)) + ')''' % grp_range
# print sql
SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN
(
SELECT hostid FROM hosts_groups WHERE groupid IN (' +
','.join(map(str, [1, 2, 3])) + ')
Since the triple-quoted string only ends at the corresponding triple quote,
you're including some Python code into the string instead of executing it. If
you really want to splice the elements of grp_range into the query, you should
do something like:
# sql = 'SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN
(SELECT hostid FROM hosts_groups WHERE groupid IN (%s))' % ,.join(str(x) for
x in grp_range)
# sql
'SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE hostid IN (SELECT hostid
FROM hosts_groups WHERE groupid IN (1,2,3))'
Although, really, if you can, I'd parameterise the query (http://mysql-
python.sourceforge.net/MySQLdb-1.2.2/public/MySQLdb.cursors.BaseCursor-
class.html#execute) at the very least...
with
_mysql_exceptions.ProgrammingError: (1064, You have an error in
your SQL syntax; check the manual that corresponds to your MySQL
server version for the right syntax to use near '' at line 1)
I'll gladly accept any other code change suggestion
#!/usr/bin/env python
import MySQLdb
import sys, os
import code
builder_path = '/opt/scripts/dns_builder'
grp_range = range(10,15)
try:
db = MySQLdb.connect(host=localhost,
user=tst,passwd=tst,db=tst_db )
except MySQLdb.Error, e:
print Error %d: %s % (e.args[0], e.args[1])
cursor = db.cursor()
sql = '''SELECT ip, host, dns FROM zabbix_tst_db.hosts WHERE
hostid IN (
select hostid from hosts_groups WHERE groupid IN (' +
','.join(map(str, %s)) + ')''' % grp_range
cursor.execute(sql)
f = open('%s/dns_unknown_list.txt', 'w+') % builder_path
data = cursor.fetchall()
for row in data:
ip = row[0]
host = row[1]
dns = row[2]
if host == dns:
#tmn
if ip[0][:10] in ('140.254.30','10.13.74.')
group1_file = open('%s/group1.zone', 'w') % builder_path
print group1_file, '''$ORIGIN group1
'''
print group1_file, '%s IN A%s' % (dns, ip)
elif ip[0][:3] in ('8.128.46.','6.128.101')
group2_file = open('%s/group2.zone', 'w') % builder_path
print group2_file, '''$ORIGIN group2
'''
print group2_file, '%s IN A%s' % (dns, ip)
else:
print f, 'unknown IN A%s' % ip
db.close()
input_file.close()
f.close()
Rami Chowdhury
As an online discussion grows longer, the probability of a comparison
involving Nazis or Hitler approaches one. -- Godwin's Law
408-597-7068 (US) / 07875-841-046 (UK) / 01819-245544 (BD)
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Certainly. The PEP format is a useful one. I've used it myself for some numpy design documents. But can you see why people might get confused about your intentions when you call it a draft PEP and post it to python-dev? If you stop calling it a PEP and stop talking about putting it in the standard library, people will stop being distracted by those issues. As I mentioned, I didn't see the fine print in PEP 1 about PEP 2 being the document for library modules. As I mentioned, mea culpa. It is painfully obvious that some don't like the way I have gone about describing the project. They obviously view me announcing this as premature, or presumptuous, or something, and they have some sort of visceral reaction to that. However, I do not believe that any people (other than me) were really confused in the process. I made my intentions clear, and some people reacted badly to that because I didn't follow the process (for which I apologize again). But calling it a draft PEP is a distraction (because of the visceral reaction), but is not really what I would call confusing. My intention actually is to try to build something that is worthy of the standard library, and to eventually try to get it accepted, because I perceive a hole there, with a lot of point solutions being done to solve a common problem, and I believe the pushback is coming from people who fully understood that intention from my posting. I will try to say hey -- here's a hole in the library and a proposal for how to fix it more diplomatically and in the correct forum in the future, but it would be disingenuous for me to disown my goal of getting a better configparser into the standard library. Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: Variable definition
On 3/1/2010 1:07 PM, Raphael Mayoraz wrote:
John Posner wrote:
On 2/26/2010 6:32 PM, Raphael Mayoraz wrote:
Hello,
I'd like to define variables with some specific name that has a common
prefix.
Something like this:
varDic = {'red': 'a', 'green': 'b', 'blue': 'c'}
for key, value in varDic.iteritems():
'myPrefix' + key = value
No trick, just swap a new key-value pair for each existing pair:
for key, value in varDic.iteritems():
varDic[myPrefix + key] = value
del varDict[key]
Just make sure that *myPrefix* isn't an empty string!
-John
Thanks for your answer.
However, your solution changes the key name in the dictionary.
That's not what I want I need to do. What I want is to define a new
variable which name is define as a string: 'myPrefx' + key. In the example
I give, I would get 3 variables:
myPrefixred = a
myPrefixgreen = b
myPrefixblue = c
Yes, I misinterpreted your request. I believe there's a consensus around
here that you shouldn't even try to accomplish your goal. Instead of
creating *myPrefixred* as a (module-)global name or a (function-)local
name, you should just use the dictionary as-is: *varDict['red']*. Or
maybe make the names into attributes of a class, as Alex Goretoy
suggested. [1]
Can you present a convincing argument as to why you really, really need
to use the name *myPrefixred* ?
-John
[1] http://mail.python.org/pipermail/python-list/2010-February/1237736.html
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 12:40 pm, Daniel Fetchinson fetchin...@googlemail.com wrote: But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. And in case you are new here let me assure you that Paul is saying this with his full intention of being helpful to you. I also would think that working on such a project might be fun and educational for you but completely useless if you have users other than yourself in mind. Again, I'm trying to be helpful here, so you can focus on a project that is both fun/educational for you and also potentially useful for others. This RSON business is not one of them. OK, but I am a bit unclear on what you and/or Paul are claiming. It could be one of a number of things. For example: - There is a preexisting file format suitable for my needs, so I should not invent another one. - If I invent a file format suitable for my needs, it couldn't possibly be general enough for anybody else. - Even if it was general enough for somebody else, there would only be two of them. I've been known to waste time (or be accused of wasting time) on various endeavors, but I like to know exactly *why* it is perceived to be a waste. Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Best auto insurance company // Best auto insurance company /// Best auto insurance company ///
VISIT http://alturl.com/8xs8 -- http://mail.python.org/mailman/listinfo/python-list
Re: AOP decorator?
On 3/1/2010 11:22 AM, gentlestone wrote: Hi, suppose my source code looks like: import aspect_xy class Basic(object, aspect_xy.Basic): pass # basic attributes and methods ... As a sidenote, this violates my understanding of aspect-oriented programming, which is to add aspects that go across several derived classes. But... and the source code of aspect_xy.py is: class Basic(object): pass # aspect extra attributes and methods ... how can I write this with decorators? I want something like: --- import aspect_xy @aspect_xy # extra attributes and methods ... class Basic(object): pass # basic attributes and methods ... -- I want to write class decorator function, which: 1. Takes the basic class as parameter 2. Find the same class name in aspect_xy.py 3. Inherit the found aspect class Is it possible? You would have to look at the difference between Basic with and without the explicit base class and patch the latter to look like the former. At minimum, you would have to fix .__bases__ and .__mro__, but I do not know if those are writable. To me, it seems easier to be explicit. tjr -- http://mail.python.org/mailman/listinfo/python-list
Re: AOP decorator?
On Mar 1, 4:22 pm, gentlestone tibor.b...@hotmail.com wrote:
Hi,
suppose my source code looks like:
import aspect_xy
class Basic(object, aspect_xy.Basic):
pass # basic attributes and methods ...
and the source code of aspect_xy.py is:
class Basic(object):
pass # aspect extra attributes and methods ...
how can I write this with decorators? I want something like:
---
import aspect_xy
@aspect_xy # extra attributes and methods ...
class Basic(object):
pass # basic attributes and methods ...
--
I want to write class decorator function, which:
1. Takes the basic class as parameter
2. Find the same class name in aspect_xy.py
3. Inherit the found aspect class
Is it possible?
Untested and written quickly, so all possible disclaimers apply ;)
class BaseObject(object):
pass
def aspect_xy_dec(base):
def wrapper(cls):
return type(cls.__name__, (base, getattr(aspect_xy, cls.__name__)),
{})
return wrapper
@aspect_xy(BaseObject)
class SomeObject:
pass
Cheers,
Jon.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Patrick Maupin pmau...@gmail.com writes: - There is a preexisting file format suitable for my needs, so I should not invent another one. There are in fact quite a few--json, yaml, .ini, xml, Python literals (http://code.activestate.com/recipes/364469-safe-eval/), s-expressions, actual Python code that the application can import, and so forth. The problem isn't that you're trying to invent a useless file format per se, but rather that in trying to get other people to learn it and use it, you're also trying to appropriate a chunk of the user community's scarce and precious brain cells without good justification. Newbie designers are often lured into that and they're unfortunately (i.e. to the community's detrimtent) often more successful than they really should be. Your one complaint about yaml is that it's slow to parse. Why do you care about the parsing speed of a config file? If the existing implementation is too slow, why not write a faster one instead of designing yayaml? Even yaml is excessive in my view. Yet another was an ok plan when Steve Johnson started the trope by writing Yacc 30 years ago. These days, don't do yet another without very convincing reasons for rejecting what is already there. -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 1:37 pm, Paul Rubin no.em...@nospam.invalid wrote: There are in fact quite a few--json, yaml, .ini, xml, Python literals (http://code.activestate.com/recipes/364469-safe-eval/), s-expressions, actual Python code that the application can import, and so forth. Yes, I know about those. The problem isn't that you're trying to invent a useless file format per se, but rather that in trying to get other people to learn it and use it, you're also trying to appropriate a chunk of the user community's scarce and precious brain cells without good justification. Newbie designers are often lured into that and they're unfortunately (i.e. to the community's detrimtent) often more successful than they really should be. Can't disagree with the statement about newbie designers. On the flip side, sometimes things wind up being defacto standards, simply because nobody could be bothered to write a better one, and they have lots of little niggling warts that also collectively take up a lot of time and attention. There is obviously a good balance somewhere. Your one complaint about yaml is that it's slow to parse. Why do you care about the parsing speed of a config file? If the existing implementation is too slow, why not write a faster one instead of designing yayaml? Even yaml is excessive in my view. Yet another was an ok plan when Steve Johnson started the trope by writing Yacc 30 years ago. These days, don't do yet another without very convincing reasons for rejecting what is already there. One of my complaints. If you had read the document you would have seen others. I actually have several complaints about YAML, but I tried to write a cogent summary. Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Patrick Maupin pmau...@gmail.com writes: One of my complaints. If you had read the document you would have seen others. I actually have several complaints about YAML, but I tried to write a cogent summary. Yaml sucks, but seems to have gotten some traction regardless. Therefore the Python principle of there should be one and only one obvious way to do it says: don't try to replace the existing thing if your new thing is only slightly better. Just deal with the existing thing's imperfections or make improvements to it. If you can make a really powerful case that your new thing is 1000x better than the old thing, that's different, but I don't think we're seeing that here. Also, XML is used for pretty much everything in the Java world. It sucks too, but it is highly standardized, it observably gets the job done, there are tons of structure editors for it, etc. Frankly I'd rather have stayed with it than deal with Yaml. There are too many of these damn formats. We should ban all but one of them (I don't much care which one). And making even more of them is not the answer. -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
On Mon, 01 Mar 2010 11:42:16 -0600 Robert Kern robert.k...@gmail.com wrote: On 2010-03-01 11:22 , Andreas Waldenburger wrote: Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? Software usually needs to be maintained and extended over the course of its lifetime. The original team that wrote it may not be available in the future. Furthermore, docstrings are not comments. They become part of the function object and can be introspected at runtime. This is a very important tool when working with code at the interactive prompt and for the collection of API documentation. Comments are less useful than docstrings; the OP's complaint was that his programmers were putting the function documentation in other places than docstrings, rendering them less useful than they could have been. No, the OP complained about those guys being idiots. I should know, because I posted it. /W -- INVALID? DE! -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
On Mon, 01 Mar 2010 18:42:17 +0100 Jean-Michel Pichavant jeanmic...@sequans.com wrote: Andreas Waldenburger wrote: [snip] Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? If you've bought the code and want to maintain it, you'd better make sure it's possible. Fair enough, but we don't want to maintain it. By the way, the ISO 9001 standard ask for your out sourced processing to be compliant with your QA objectives, so if you care about your code, then you should care for the code you buy. We did not buy code. If it were written in C or such, we would never get to see it. It's not our concern. /W -- INVALID? DE! -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 2:08 pm, Paul Rubin no.em...@nospam.invalid wrote: Yaml sucks, but seems to have gotten some traction regardless. Yes, that's actually one of the reasons I want to do this. I've heard that some of the YAML people want that in the standard library, and IMHO that would be a huge mistake. Therefore the Python principle of there should be one and only one obvious way to do it says: don't try to replace the existing thing if your new thing is only slightly better. But for my use-case, YAML is irretrievably broken. Sure, it looks reasonably nice, but it increases regression runtime unacceptably. Also, despite their current protestations that Yaml AIN'T markup language, the syntax still belies its markup roots. I'm looking for a configuration language, not a markup language. Just deal with the existing thing's imperfections or make improvements to it. Well, I've looked at the YAML parser and I can assure you that I will not be contributing to that project. If you can make a really powerful case that your new thing is 1000x better than the old thing, that's different, but I don't think we're seeing that here. Well, there's no way I'm hitting three orders of magnitude, but I don't think the bar is really that high. We will see. Also, XML is used for pretty much everything in the Java world. It sucks too, but it is highly standardized, it observably gets the job done, there are tons of structure editors for it, etc. Frankly I'd rather have stayed with it than deal with Yaml. XML can certainly be made readable by humans. It's hard to make it writeable by (average) humans just using a regular text editor, and even though there are tons of structure editors, requiring non- technical people to find one of those and start using it is a non- starter in many cases. But I can't strongly disagree with the opinion that YAML doesn't offer all that much over it. There are too many of these damn formats. We should ban all but one of them (I don't much care which one). And making even more of them is not the answer. Well, I think that XML and YAML both overreach by trying to be all things to all applications. So I'm aiming a lot lower than that. I just want to make really good configuration files that are easy to modify in a text editor. None of the existing formats are suitable. I may be the only one who feels that way. OTOH, if we never invented new things, then I wouldn't be enjoying restructured text, and I'd be missing out on a lot there... Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Class attributes / methods..... full Python script
Hi guys,
thanks for the ideas. Here you are the code. Not transcoded from Java
for I do not know Java enough..
I am scanning an XML file, and have a large ammount of logging.
Any ideas are wellcome as before
Thnx
Code:
#-
## Generate CSV from OEP History XML
#-
import sys
import os
from xml.dom.minidom import parse, parseString
import xml.dom
import logging
versionStr = '0.01'
class Item:
def __init__(self, pId, pChange, pComment):
self.ID = pId
self.Delta = pChange
self.Comment = pComment
def PrintItem(self):
str = '%s,%s,%s'%(self.ID,self.Delta,self.comment)
return str
class Package:
def __init__(self, pSerial, pDate, pOwner, pSchema):
self.serial = pSerial
self.date = pDate
self.owner = pOwner
self.schema = pSchema
self.items = []
def insertItem(self, pItem):
self.items.append(pItem)
def printPackage(self):
lines = []
str = '%s,%s,%s,%s'%(self.serial,self.date,self.owner,self.schema)
number = self.items.length
for idx in xrange(number):
line = ''
istr = self.items[idx].PrintItem()
line = str + ',' + istr
lines.append(line)
return lines
def getItem(tracer, pkgItem, itemName):
retval = -1
name =
found = 0
str =
tracer.info('Function getItem entry, name = %s',itemName)
nItem = pkgItem.getElementsByTagName(itemName).item(0)
for node in pkgItem.childNodes:
if node.nodeType != xml.dom.Node.TEXT_NODE:
tracer.debug('Scanning node name = %s',node.nodeName)
if node.nodeName == itemName:
tracer.debug('Pkg %s found',itemName)
else:
tracer.warning('Pkg %s is not found',itemName)
continue
for entity in node.childNodes:
if entity.nodeType == xml.dom.Node.TEXT_NODE:
retval = entity.nodeValue
tracer.debug(Node value found %s,retval)
found = 1
break
if found == 1:
break
tracer.debug('Function getItem returns %s',retval)
return retval
logger = logging.getLogger('XmlHistory')
handler = logging.FileHandler(Xmlhistory.trc,'a')
## handler = logging.StreamHandler(sys.stderr)
logger.addHandler(handler)
formatter = logging.Formatter(%(name)s %(asctime)s %(filename)s
%(lineno)d %(levelname)s %(message)s)
handler.setFormatter(formatter)
logger.setLevel(2)
fileName = history.xml
output = 'history.csv'
logger.info('Xml history generator version %s',versionStr)
logger.info('Starting history generation on file:%s',fileName)
packages = []
data = []
## Start XML processing
dataSource = parse(fileName)
print dataSource.documentElement.tagName
listCsomag = dataSource.getElementsByTagName(csomag)
size = listCsomag.length
logger.debug('Number of packages = %d',size)
for idx in xrange(size):
attrib =
package = None
serial = 0
date =
owner =
schema =
flag = False
logger.info('Parsing package id=%d',idx)
attrib = getItem(logger, listCsomag.item(idx),'sorszam')
if attrib NUM and attrib -1:
serial = int(attrib)
flag = True
logger.debug('Package serial set to %d',serial)
else:
logger.debug(Template package found.)
break
attrib =
attrib = getItem(logger,listCsomag.item(idx),datum)
if attrib -1:
date = attrib
flag = flag and True
logger.debug('Package date set to %s',date)
attrib =
attrib = getItem(logger,listCsomag.item(idx),ki)
if attrib -1:
owner = attrib
flag = flag and True
logger.debug('Package owner set to %s',owner)
attrib =
attrib = getItem(logger,listCsomag.item(idx),sema)
if attrib -1:
schema = attrib
flag = flag and True
logger.debug('Package schema set to %s',schema)
if flag True:
logger.error('Package id=%d is inconsistent',idx)
break
else:
logger.info('Package id=%d is ok',idx)
package = Package(serial,date,owner,schema)
listItem = listCsomag.item(idx).getElementsByTagName(item)
itemSize = listItem.length
logger.debug('Number of items = %d',itemSize)
for num in xrange(itemSize):
flag = False
value = -1
listId = 0
change =
comment =
item = None
logger.info('Parsing item id = %d',num)
value = getItem(logger,listItem.item(num),item_id)
if value -1:
listId = int(value)
flag = True
logger.debug('List id set to %d',listId)
value =
value = getItem(logger,listItem.item(num),valtozas)
if value -1:
change = value
flag = flag and True
logger.debug('List change
Re: Draft PEP on RSON configuration file format
Patrick Maupin pmau...@gmail.com writes: But for my use-case, YAML is irretrievably broken. Sure, it looks reasonably nice, but it increases regression runtime unacceptably. How big are the files that you want to parse with it? Sheesh. Well, I've looked at the YAML parser and I can assure you that I will not be contributing to that project. So write a new one that parses the same syntax, but cleaner and faster. XML can certainly be made readable by humans. It's hard to make it writeable by (average) humans just using a regular text editor, I do it all the time; it's a bit dreary but not difficult. And there is absolutely no way to get anything done in this field anymore without dealing with XML from time to time. So given that we all have some experience using it, it's sensible to stick with it. None of the existing formats are suitable. I may be the only one who feels that way. OTOH, if we never invented new things, then I wouldn't be enjoying restructured text, and I'd be missing out on a lot there... ReST is another abomination that should never have gotten off the ground. It is one of the reasons I react so negatively to your config format proposal. It just sounds like more of the same. -- http://mail.python.org/mailman/listinfo/python-list
Re: Method / Functions - What are the differences?
Michael Rudolf a écrit : Out of curiosity I tried this and it actually worked as expected: class T(object): x=[] foo=x.append def f(self): return self.x t=T() t.f() [] T.foo(1) t.f() [1] At first I thought hehe, always fun to play around with python. Might be useful sometimes - but then It really confused me what I did. I mean: f is what we call a method, right? Wrong. It's a function. T.f is an unbound method (in python 2.x at least) and t.f is a bound method. But was is foo? A bound method. Bound to x, of course. It is not a method and not a classmethod as it accepts no self and no cls. Yes it does. Else how would t.foo(4) (or T.foo(4)) append 4 to x ? Perhaps this all does not matter, It does. but now I am really confused about the terminology. So: what makes a method a method? The right question is: what makes a function a method !-) And of what type? Answer here: http://groups.google.com/group/comp.lang.python/tree/browse_frm/thread/bd71264b6022765c/3a77541bf9d6617d#doc_89d608d0854dada0 I really have to put this in the wiki :-/ -- http://mail.python.org/mailman/listinfo/python-list
Building Python with Scons
I'm setting up a third-party library project (similar to the one in Google Chromium) where I use SCons as build tool. Now I need to integrate Python, too. Has anybody written a Scons script for Python 2.x or 3.x, yet? -- Gerhard -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 2010, at 3:08 PM, Paul Rubin wrote: Patrick Maupin pmau...@gmail.com writes: One of my complaints. If you had read the document you would have seen others. I actually have several complaints about YAML, but I tried to write a cogent summary. Yaml sucks, but seems to have gotten some traction regardless. Therefore the Python principle of there should be one and only one obvious way to do it says: don't try to replace the existing thing if your new thing is only slightly better. Just deal with the existing thing's imperfections or make improvements to it. If you can make a really powerful case that your new thing is 1000x better than the old thing, that's different, but I don't think we're seeing that here. Also, XML is used for pretty much everything in the Java world. It sucks too, but it is highly standardized, it observably gets the job done, there are tons of structure editors for it, etc. Frankly I'd rather have stayed with it than deal with Yaml. There are too many of these damn formats. We should ban all but one of them (I don't much care which one). And making even more of them is not the answer. I dunno, times change, needs change. We must invent new tools, be those computer languages or data formats. Otherwise we'd still be programming in COBOL and writing fixed-length records to 12 inch floppies.* If Mr. Maupin was a giant corporation trying to shove a proprietary format down our collective throats, I might object to RSON. But he's not. He appears willing for it live or die on its merits, so I say good luck to him. I don't want or need it, but someone else might. Cheers Philip * You had floppies? Bleddy luxury! We wrote our data on wood pulp we'd chewed ourselves and dried into paper, using drops of our own blood to represent 1s and 0s. -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
Andreas Waldenburger wrote: On Mon, 01 Mar 2010 18:42:17 +0100 Jean-Michel Pichavant jeanmic...@sequans.com wrote: Andreas Waldenburger wrote: [snip] Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? If you've bought the code and want to maintain it, you'd better make sure it's possible. Fair enough, but we don't want to maintain it. By the way, the ISO 9001 standard ask for your out sourced processing to be compliant with your QA objectives, so if you care about your code, then you should care for the code you buy. We did not buy code. If it were written in C or such, we would never get to see it. It's not our concern. /W From your original post. quote a company that works with my company writes a lot of of their code in Python (lucky jerks). I've seen their code and it basically looks like this: /quote So what is the relationship between your company and this other company? When it gets down to pounds, shillings and pence (gosh, I'm old!:) it sure as hell could make a tremendous difference in the long term, given that usually maintainance costs are astronomical when compared to initial development costs. Regards. Mark Lawrence. -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 2:42 pm, Paul Rubin no.em...@nospam.invalid wrote: Patrick Maupin pmau...@gmail.com writes: But for my use-case, YAML is irretrievably broken. Sure, it looks reasonably nice, but it increases regression runtime unacceptably. How big are the files that you want to parse with it? Sheesh. Tiny, but over and over. The rst2pdf testsuite can generate approximately 160 PDFs, totalling around 2.5 MB, in around 22 seconds on one of my machines. But if I replace the JSON parser with a YAML parser, that goes up to 55 seconds. Wait, maybe it's because JSON is optimized in C! Nope, using JSON but disabling the C scanner only takes it to 22.3 seconds... Well, I've looked at the YAML parser and I can assure you that I will not be contributing to that project. So write a new one that parses the same syntax, but cleaner and faster. But there are already several parsers for YAML, and none of them agree! The syntax definition is a mess. The thing's been in development for 10 years now, and there is no one true way to do it. Seriously, YAML overreaches for what I want. XML can certainly be made readable by humans. It's hard to make it writeable by (average) humans just using a regular text editor, I do it all the time; it's a bit dreary but not difficult. And there is absolutely no way to get anything done in this field anymore without dealing with XML from time to time. So given that we all have some experience using it, it's sensible to stick with it. But people in this field are not really my target audience. Well, I mean people in this field are the target audience for the library, but not for the writing of the actual text files. ReST is another abomination that should never have gotten off the ground. It is one of the reasons I react so negatively to your config format proposal. It just sounds like more of the same. Well, that clarifies a lot. I guess we'll just have to agree to disagree :-) Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
How to crash CPython 3.1.1 in Windows XP
How to crash CPython 3.1.1 in Windows XP: python -c import os; os.spawnl( os.P_WAIT, 'blah' ) I reported this as a bug, url: http://bugs.python.org/issue8036 Workaround: it seems that spawnl is happy with an absolute path as second arg, followed by a third arg which should be the name of the program (repeated). Cheers, - Alf -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On 3/1/2010 1:02 PM Philip Semanchuk said... * You had floppies? Bleddy luxury! We wrote our data on wood pulp we'd chewed ourselves and dried into paper, using drops of our own blood to represent 1s and 0s. You had left-over blood?!! Emile :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Class attributes / methods..... full Python script
Gabor Urban wrote: thanks for the ideas. Here you are the code. Not transcoded from Java for I do not know Java enough.. I am scanning an XML file, and have a large ammount of logging. Any ideas are wellcome as before Thnx Code: packages.append(Package) Replace Package (the class) with package (an instance). for i in xrange(oplines.length): data.append(oplines[i]) Python lists don't have a length attribute. You can determine their length with len(oplines). To iterate over the items of a list you need not know the list's length: for line in oplines: data.append(line) which can be simplified to data.extend(oplines) Peter PS: Rrread the tutorial -- http://mail.python.org/mailman/listinfo/python-list
Re: Class attributes / methods..... full Python script
Gabor Urban wrote:
Hi guys,
thanks for the ideas. Here you are the code. Not transcoded from Java
for I do not know Java enough..
I am scanning an XML file, and have a large ammount of logging.
Any ideas are wellcome as before
Thnx
Code:
#-
## Generate CSV from OEP History XML
#-
import sys
import os
from xml.dom.minidom import parse, parseString
import xml.dom
import logging
versionStr = '0.01'
class Item:
def __init__(self, pId, pChange, pComment):
self.ID = pId
self.Delta = pChange
self.Comment = pComment
def PrintItem(self):
str = '%s,%s,%s'%(self.ID,self.Delta,self.comment)
return str
class Package:
def __init__(self, pSerial, pDate, pOwner, pSchema):
self.serial = pSerial
self.date = pDate
self.owner = pOwner
self.schema = pSchema
self.items = []
def insertItem(self, pItem):
self.items.append(pItem)
def printPackage(self):
lines = []
str = '%s,%s,%s,%s'%(self.serial,self.date,self.owner,self.schema)
number = self.items.length
If this is meant to get the length of self.items, then it won't work. It
should be:
number = len(self.items)
for idx in xrange(number):
line = ''
What's the purpose of this line? You're not using 'line' before you
assign to it again.
istr = self.items[idx].PrintItem()
line = str + ',' + istr
lines.append(line)
return lines
def getItem(tracer, pkgItem, itemName):
retval = -1
name =
found = 0
str =
tracer.info('Function getItem entry, name = %s',itemName)
nItem = pkgItem.getElementsByTagName(itemName).item(0)
for node in pkgItem.childNodes:
if node.nodeType != xml.dom.Node.TEXT_NODE:
tracer.debug('Scanning node name = %s',node.nodeName)
if node.nodeName == itemName:
tracer.debug('Pkg %s found',itemName)
else:
tracer.warning('Pkg %s is not found',itemName)
continue
for entity in node.childNodes:
if entity.nodeType == xml.dom.Node.TEXT_NODE:
retval = entity.nodeValue
tracer.debug(Node value found %s,retval)
found = 1
break
if found == 1:
break
tracer.debug('Function getItem returns %s',retval)
return retval
logger = logging.getLogger('XmlHistory')
handler = logging.FileHandler(Xmlhistory.trc,'a')
## handler = logging.StreamHandler(sys.stderr)
logger.addHandler(handler)
formatter = logging.Formatter(%(name)s %(asctime)s %(filename)s
%(lineno)d %(levelname)s %(message)s)
handler.setFormatter(formatter)
logger.setLevel(2)
fileName = history.xml
output = 'history.csv'
logger.info('Xml history generator version %s',versionStr)
logger.info('Starting history generation on file:%s',fileName)
packages = []
data = []
## Start XML processing
dataSource = parse(fileName)
print dataSource.documentElement.tagName
listCsomag = dataSource.getElementsByTagName(csomag)
size = listCsomag.length
logger.debug('Number of packages = %d',size)
for idx in xrange(size):
attrib =
package = None
serial = 0
date =
owner =
schema =
flag = False
logger.info('Parsing package id=%d',idx)
attrib = getItem(logger, listCsomag.item(idx),'sorszam')
if attrib NUM and attrib -1:
serial = int(attrib)
flag = True
logger.debug('Package serial set to %d',serial)
else:
logger.debug(Template package found.)
break
attrib =
What's the purpose of this line? You're not using 'attrib' before you
assign to it again. You're doing this repeatedly in the code.
attrib = getItem(logger,listCsomag.item(idx),datum)
if attrib -1:
date = attrib
flag = flag and True
Whether 'flag' is False or True, this line won't change it. You're also
doing this repeatedly in the code.
logger.debug('Package date set to %s',date)
attrib =
attrib = getItem(logger,listCsomag.item(idx),ki)
if attrib -1:
owner = attrib
flag = flag and True
logger.debug('Package owner set to %s',owner)
attrib =
attrib = getItem(logger,listCsomag.item(idx),sema)
if attrib -1:
schema = attrib
flag = flag and True
logger.debug('Package schema set to %s',schema)
if flag True:
Clearer as:
if not flag:
or even clearer if you picked a better name than 'flag'.
logger.error('Package id=%d is inconsistent',idx)
break
else:
logger.info('Package id=%d is ok',idx)
package = Package(serial,date,owner,schema)
listItem = listCsomag.item(idx).getElementsByTagName(item)
itemSize = listItem.length
logger.debug('Number of items = %d',itemSize)
for num in
Re: Docstrings considered too complicated
Andreas Waldenburger use...@geekmail.invalid writes: On Mon, 01 Mar 2010 18:42:17 +0100 Jean-Michel Pichavant jeanmic...@sequans.com wrote: Andreas Waldenburger wrote: [snip] Back in the software world: Those guys write code that works. It does what it's supposed to do. Why should we care where they put their comments? If you've bought the code and want to maintain it, you'd better make sure it's possible. Fair enough, but we don't want to maintain it. Do you want it maintained beyond the span of your agreement with the current developers? Do you want to have free choice in who will maintain it over the period that you need it maintained? I understood “want to maintain it” in Jean-Michel's message to include the possibility to get someone else to maintain it on your terms. It's not our concern. Then I don't see what that problem is. -- \ “To save the world requires faith and courage: faith in reason, | `\and courage to proclaim what reason shows to be true.” | _o__)—Bertrand Russell | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Call for Participation: CHR Summer School
- Call for Participation - First International Summer School on CHR: Programming and Reasoning with Rules and Constraints August 30 - September 3 2010 Leuven, Belgium Website: http://www.cs.kuleuven.be/~dtai/CHR/summerschool * EARLY REGISTRATION DISCOUNT: When registering (including payment) before * * March 31, the registration fee will be reduced by 20 euro! * * * * Additional early registration incentive: * * The first 7 registrants get a FREE copy of the book * * Constraint Handling Rules - Current Research Topics* The aim of the summer school is to familiarize the participants with state-of-the-art high-level declarative programming with rules and constraints as well as providing insights into the analysis of programs based on these concepts. The courses cover a wide range from theory to practice. The summer school will be based on the advanced high-level rule-based formalism and programming language Constraint Handling Rules (CHR) http://constraint-handling-rules.org/ Intended Audience: The summer school provides courses at various levels. It is open to anyone interested. It aims at Phd. students, but also post-docs, interested researchers and master students as well as interested parties from industry. Besides a working knowledge of English, there are no prerequisites. A basic knowledge of logic and Prolog that is usually covered in undergraduate classes could be helpful. Lectures and Courses: The programming language CHR will be introduced by several lecturers on the first day of the summer school. - Slim Abdennadher, GUC, Egypt Analysis of CHR Solvers - Henning Christiansen, U. Roskilde, Denmark Abduction and language processing with CHR - Thom Fruehwirth, University Ulm, Germany CHR - a common platform for rule-based approaches - Jon Sneyers, K.U.Leuven, Belgium Computability and Complexity of CHR - Peter Van Weert, K.U.Leuven, Belgium Implementation of CHR Systems A final evaluation for each course is possible through a final exam or project as determined by the instructor. The daily schedule admits laboratory, recitation or working group activities to be organized in addition to lectures. Registration: The registration fee for the School is 300 euro and includes teaching material with book, as well as accomodation and coffee breaks. Meals are not included. Attendance is limited to 20 students and will be allocated on a first-come- first-served basis. Without accommodation the registration fee is reduced to 200 euro. Location: Leuven is a lively student town in Belgium with a very high density of pubs offering hundreds of types of local beers. Organization: Thom Fruehwirth, University of Ulm, Germany Jon Sneyers, K.U. Leuven, Belgium Peter Van Weert, K.U. Leuven, Belgium -- Looking for an H-912 (container). -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt4.7 and PyQwt5.2.0
Gib Bogle wrote: I installed the latest PyQt (4.7-1), then PyQwt 5.2.0, which was built with PyQt4.5.4. This line import PyQt4.Qwt5 as Qwt fails to load the DLL. Could this be the result of not using PyQt4 4.5.4? I guess I can answer my own question. As far as I can determine, PyQwt 5.2.0 needs PyQt 4.5.4 to work. -- http://mail.python.org/mailman/listinfo/python-list
Re: Variable definition
On Mon, 01 Mar 2010 18:07:17 -, Raphael Mayoraz may...@netplus.ch wrote: Thanks for your answer. However, your solution changes the key name in the dictionary. That's not what I want I need to do. What I want is to define a new variable which name is define as a string: 'myPrefx' + key. In the example I give, I would get 3 variables: myPrefixred = a myPrefixgreen = b myPrefixblue = c I repeat my previous question: why? What problem do you think this will solve that will not be more easily solved working with the language rather than against it? -- Rhodri James *-* Wildebeeste Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Daniel Fetchinson wrote: it is my goal (which I may or may not be smart enough to reach) to write a module that anybody would want to use; But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. And in case you are new here let me assure you that Paul is saying this with his full intention of being helpful to you. I also would think that working on such a project might be fun and educational for you but completely useless if you have users other than yourself in mind. Again, I'm trying to be helpful here, so you can focus on a project that is both fun/educational for you and also potentially useful for others. This RSON business is not one of them. Agreed. Even YAML's acronym indicates that it is already a bridge too far; we don't need more. -- Erik Max Francis m...@alcyone.com http://www.alcyone.com/max/ San Jose, CA, USA 37 18 N 121 57 W AIM/Y!M/Skype erikmaxfrancis It's better to be quotable than to be honest. -- Tom Stoppard -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Patrick Maupin wrote: On Mar 1, 12:03 pm, Paul Rubin no.em...@nospam.invalid wrote: But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. The only in search of here is that, instead of working on a point solution for my particular problem, I am in search of a solution that is a bit more elegant and general, and that might help solve other people's problems too. If you are not one of those that has this sort of problem at this point in time, then feel free to kill- file this thread. Psst. That you're allowed to present the idea that you think is good doesn't mean that other people aren't allowed to respond and point out that in their opinion it's not such a good idea. You don't own this or any other thread. -- Erik Max Francis m...@alcyone.com http://www.alcyone.com/max/ San Jose, CA, USA 37 18 N 121 57 W AIM/Y!M/Skype erikmaxfrancis It's better to be quotable than to be honest. -- Tom Stoppard -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Patrick Maupin wrote: On Feb 28, 9:18 pm, Steven D'Aprano Wait a minute... if JSON is too hard to edit, and RSON is a *superset* of JSON, that means by definition every JSON file is also a valid RSON file. Since JSON is too hard to manually edit, so is RSON. Well, Python is essentially a superset of JSON, with string escape handling being ever so slightly different, and using True instead of true, False instead of false, and None instead of null. YMMV, but I find it possible, even probable, to write Python that is far easier to edit than JSON, and in fact, I have used Python for configuration files that are only to be edited by programmers or other technical types. This not only seriously stretching the meaning of the term superset (as Python is most definitely not even remotely a superset of JSON), but still doesn't address the question. Is RSON and _actual_ superset of JSON, or are you just misusing the term there, as well? If it is, then your rationale for not using JSON makes no sense if you're making a new format that's merely a superset of it. Obviously JSON can't be that unreadable if you're _extending_ it to make your own more readable format. If JSON is unreadable, so must be RSON. -- Erik Max Francis m...@alcyone.com http://www.alcyone.com/max/ San Jose, CA, USA 37 18 N 121 57 W AIM/Y!M/Skype erikmaxfrancis It's better to be quotable than to be honest. -- Tom Stoppard -- http://mail.python.org/mailman/listinfo/python-list
Re: taking python enterprise level?...
On Mar 1, 6:32 am, simn_stv nany...@googlemail.com wrote: ... You have to follow some tricks: 1) have the web server serve static pages directly and set the pragma cache expire to one month 2) cache all pages that do not have forms for at least few minutes 3) avoid database joins but this would probably be to the detriment of my database design, which is a no-no as far as im concerned. The way the tables would be structured requires 'joins' when querying the db; or could you elaborate a little?? Joins are the bottle neck of most web app that relay on relational databases. That is why non-relational databases such as Google App Engine, CouchDB, MongoDB do not even support Joins. You have to try to minimize joins as much as possible by using tricks such as de- normalization and caching. 4) use a server with at least 512KB Ram. hmmm...!, still thinking about what you mean by this statement also. I meant 512MB. The point is you need a lot of ram because you want to run multiple python instances, cache in ram as much as possible and also allow the database to buffer in ram as much as possible. You will see Ram usage tends to spike when you have lots of concurrent requests. -- http://mail.python.org/mailman/listinfo/python-list
Re: Py2exe - Bad File Descriptor
On Feb 28, 10:00 pm, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On Sun, 28 Feb 2010 13:22:19 -0800 (PST), T misceveryth...@gmail.com declaimed the following in gmane.comp.python.general: Sorry for the lack of code - yes, it does try to write to the console. From what I'm finding, this error may be due to the fact that there is no console to write to when I'm logged off. However, I would like to be able to print to screen if I run the EXE in debug mode (i.e. myservice.exe debug). Do you know of any way around this? Also, I need to get the output generated from an external EXE - will subprocess.Popen cause problems if I use stdout=PIPE? Thanks for your help! True services typically don't have interactive (console) type I/O... What is more likely to work is to have an open socket waiting for connections, and the use of a separate user-space client that connects to the socket... -- Wulfraed Dennis Lee Bieber KD6MOG wlfr...@ix.netcom.com HTTP://wlfraed.home.netcom.com/ So how would that work..would the program buffer all the print output, then send it to the client when it connects? Do you happen to know of any available code that utilizes this method, or something similar? Thanks for your help. -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 5:33 pm, Erik Max Francis m...@alcyone.com wrote: Psst. That you're allowed to present the idea that you think is good doesn't mean that other people aren't allowed to respond and point out that in their opinion it's not such a good idea. You don't own this or any other thread. Absolutely, but I still do (and will always) express a clear preference for opinions that have at least a modicum of reasoning behind them. Regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
On Mar 1, 5:57 pm, Erik Max Francis m...@alcyone.com wrote: Patrick Maupin wrote: This not only seriously stretching the meaning of the term superset (as Python is most definitely not even remotely a superset of JSON), but Well, you are entitled to that opinion, but seriously, if I take valid JSON, replace unquoted true with True, unquoted false with False, replace unquoted null with None, and take the quoted strings and replace occurrences of \u with the appropriate unicode, then I do, in fact, have valid Python. But don't take my word for it -- try it out! But if you really want to be pedantic about it, JavaScript (rather than Python) is, in fact a superset of JSON, and, despite the disparagement JavaScript receives, in my opinion, it is possible to write much better looking JavaScript than JSON for many tasks. YAML, also, is a superset of JSON, and IMO, it is possible to write much better looking YAML than JSON. still doesn't address the question. Is RSON and _actual_ superset of JSON, or are you just misusing the term there, as well? Yes, the RSON definition, in fact, a superset of JSON, just like the YAML definition. But RSON is a much smaller grammar than YAML. If it is, then your rationale for not using JSON makes no sense if you're making a new format that's merely a superset of it. Obviously JSON can't be that unreadable if you're _extending_ it to make your own more readable format. If JSON is unreadable, so must be RSON. Well, we'll have to agree to disagree here. Bearing in mind that the definition of unreadable depends on the target application and user, obviously, it will be *possible* to write unreadable RSON, just as it is *possible* to write unreadable JavaScript or Python or YAML, but it will be *possible* to write better looking RSON than is possible to achieve with JSON, just as it is *possible* to write better looking JavaScript or YAML or Python than it is *possible* to achieve with pure JSON. Best regards, Pat -- http://mail.python.org/mailman/listinfo/python-list
Re: Method / Functions - What are the differences?
On 3/1/2010 2:59 PM, Bruno Desthuilliers wrote: Answer here: http://groups.google.com/group/comp.lang.python/tree/browse_frm/thread/bd71264b6022765c/3a77541bf9d6617d#doc_89d608d0854dada0 I really have to put this in the wiki :-/ Bruno, I performed a light copy-edit of your writeup and put in some reStructuredText (reST) markup. The result is at: http://cl1p.net/bruno_0301.rst/ The only sentence that I think needs work is: Having access to itself (of course), the instance (if there's one) and the class, it's easy for it to wrap all this into a **method** object. Maybe this? With the instance object (if any) and class object available, it's easy to create a method object that wraps the function object. Begging pardon for my presumptuousness, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Draft PEP on RSON configuration file format
Erik Max Francis wrote: Daniel Fetchinson wrote: it is my goal (which I may or may not be smart enough to reach) to write a module that anybody would want to use; But you are working on a solution in search of a problem. The really smart thing to do would be pick something more useful to work on. We don't need another configuration language. I can't even say yet another because there's already a yet another called yaml. And in case you are new here let me assure you that Paul is saying this with his full intention of being helpful to you. I also would think that working on such a project might be fun and educational for you but completely useless if you have users other than yourself in mind. Again, I'm trying to be helpful here, so you can focus on a project that is both fun/educational for you and also potentially useful for others. This RSON business is not one of them. Agreed. Even YAML's acronym indicates that it is already a bridge too far; we don't need more. Note that YA in the acronym doesn't mean Yet Another, YAML = YAML Ain't Markup Language. Thanks, Kirill -- http://mail.python.org/mailman/listinfo/python-list
Re: Docstrings considered too complicated
In article mailman.59.1267456634.23598.python-l...@python.org, MRAB pyt...@mrabarnett.plus.com wrote: Ah, yes, Star Trek (the original series). If they transported down to a planet and there was a man in a red shirt who you'd never seen before, he'd be the one to die! :-) Of course. Everybody knows there's an endless supply of red shirts. -- http://mail.python.org/mailman/listinfo/python-list
