Chicago Python Group, Thurs March 10
The Chicago Python User Group, ChiPy, will have its next meeting on Thursday, March 10, starting at 7pm. For more information on ChiPy see http://chipy.org Presentations - This week we will have two presentations. Robert Ramsdell will talk about SimPy. SimPy (Simulation in Python) is an object-oriented, process-based discrete-event simulation language based on standard Python. It provides the modeler with components of a simulation model including processes, for active components like customers, messages, and vehicles, and resources, for passive components that form limited capacity congestion points like servers, checkout counters, and tunnels. It also provides monitor variables to aid in gathering statistics. Ian Bicking will be presenting on WSGI, WSGIKit, and Python web programming. WSGI is a new Python standard for interfacing between web servers (like Apache or Twisted) and web applications. WSGIKit is a reimplementation of Webware for Python using a series of WSGI components. He will be talking about its design and utilization of WSGI to create cross-framework libraries. Location This month we will be having our first suburban meeting, in Downer's Grove: Acxiom Finley Road Downer's Grove Near the intersection of I-355 and Buttefield Road. Convenient to Fry's! Parking is plentiful. Some people are carpooling from the city -- contact the mailing list if you are [EMAIL PROTECTED] About ChiPy --- We meet once amonth, on the second Thursday of the month. If you can't come this month, please join our mailing list: http://lonelylion.com/mailman/listinfo/chipy -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
py2exe Python2.4 and warning: string/unicode conversion
Hello All, I'm shipping an application using py2exe. With Python2.3 it worked fine but when switching to Python2.4 I started getting warning: string/unicode conversion all over the place. Any ideas how to solve this (other than using 'filterwarnings')? Thanks. Bye. -- Miki Tebeka [EMAIL PROTECTED] http://tebeka.bizhat.com The only difference between children and adults is the price of the toys pgp3yEdjLYB1o.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: unicode surrogates in py2.2/win
Mike Brown wrote: Very strange how it only shows up after the 1st import attempt seems to succeed, and it doesn't ever show up if I run the code directly or run the code in the command-line interpreter. The reason for that is that the Python byte code stores the Unicode literal in UTF-8. The first time, the byte code is generated, and an unpaired surrogate is written to disk. The next time, the compiled byte code is read back in, and the codec complains about the unpaired surrogate. Can anyone tell me what's causing this, or point me to a reference to show when it was fixed? In Misc/NEWS, we have, for 2.3a1: - The UTF-8 codec will now encode and decode Unicode surrogates correctly and without raising exceptions for unpaired ones. Essentially, Python now allows surrogates to occur in UTF-8 encodings. I'm using 2.2.1 and I couldn't find mention of it in any release notes up through 2.3. Any other comments/suggestions (besides stop supporting narrow unicode builds of Py 2.2) would be appreciated, too. Thanks :) I see two options. One is to compile the code with exec, avoiding byte code generation. Put exec before the code, and after it. The other option is to use variables instead of literals: surr1 = unichr(0xd800) surr2 = unichr(0xdc00) surr3 = unichr(0xe000) def chars(s, surr1=surr1, surr2=surr2, surr3=surr3): ... if surr1 = i surr2: ... I would personally go with stop supporting Py 2.2. Unless you have the time machine, you can't fix the bugs in old Python releases, and it is a waste of time (IMO) to uglify the code just to work around limitations in older interpreter versions. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: i18n: looking for expertise
klappnase wrote: I am using python-2.3.4 and get unicode errors: f = os.path.join(u'/home/pingu/phonoripper', u'\xc3\u20ac') os.path.isfile(f) True os.access(f, os.R_OK) Traceback (most recent call last): File stdin, line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode characters in position 24-25: ordinal not in range(128) That's apparently a bug in os.access, which doesn't support Unicode file names. As a work around, do def access(name, mode, orig=os.access): try: return orig(name, mode) except UnicodeError: return orig(name.encode(sys.getfilesystemencoding(), mode)) os.access=access Apparently, access is used so rarely that nobody has noticed yet (or didn't bother to report). os.path.isfile() builds on os.stat(), which does support Unicode file names. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode BOM marks
Hi, Well, no. For example, Python source code is not typically concatenated, nor is source code in any other language. We did it with C++ files in order to have only one compilation unit to accelarate compilation time over network. Also, all the languages with some include directive will have to take care of it. I guess a unicode aware C pre-compiler already does. As for the super-cat: there is actually no problem with putting U+FFFE in the middle of some document - applications are supposed to filter it out. The precise processing instructions in the Unicode standard vary from Unicode version to Unicode version, but essentially, you are supposed to ignore the BOM if you see it. Ok. I'm re-assured. A Unicode string is a sequence of integers. The numbers are typically represented as base-2, but the details depend on the C compiler. It is specifically *not* UTF-16, big or little endian (i.e. a single number is *not* a sequence of bytes). It may be UCS-2 or UCS-4, depending on a compile-time choice (which can be determined by looking at sys.maxunicode, which in turn can be either 65535 or 1114111). The programming interface to the individual characters is formed by the unichr and ord builtin functions, which expect and return integers between 0 and sys.maxunicode. Ok. I guess that Python gives the flexibility of being configurable (when compiling Python) to internally represent unicode strings as fixed 2 or 4 bytes per characters (UCS). Thank you Francis Girard -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode BOM marks
Hi,
Thank you for your answer. That confirms what Martin v. Lwis says. You can
choose between UCS-2 or UCS-4 for internal unicode representation.
Francis Girard
Le mardi 8 Mars 2005 00:44, Jeff Epler a crit:
On Mon, Mar 07, 2005 at 11:56:57PM +0100, Francis Girard wrote:
BTW, the python unicode built-in function documentation says it returns
a unicode string which scarcely means something. What is the python
internal unicode encoding ?
The language reference says farily little about unicode objects. Here's
what it does say: [http://docs.python.org/ref/types.html#l2h-48]
Unicode
The items of a Unicode object are Unicode code units. A Unicode
code unit is represented by a Unicode object of one item and can
hold either a 16-bit or 32-bit value representing a Unicode
ordinal (the maximum value for the ordinal is given in
sys.maxunicode, and depends on how Python is configured at
compile time). Surrogate pairs may be present in the Unicode
object, and will be reported as two separate items. The built-in
functions unichr() and ord() convert between code units and
nonnegative integers representing the Unicode ordinals as
defined in the Unicode Standard 3.0. Conversion from and to
other encodings are possible through the Unicode method encode
and the built-in function unicode().
In terms of the CPython implementation, the PyUnicodeObject is laid out
as follows:
typedef struct {
PyObject_HEAD
int length; /* Length of raw Unicode data in buffer
*/ Py_UNICODE *str;/* Raw Unicode buffer */
long hash; /* Hash value; -1 if not set */
PyObject *defenc; /* (Default) Encoded version as Python
string, or NULL; this is used for
implementing the buffer protocol */
} PyUnicodeObject;
Py_UNICODE is some C integral type that can hold values up to
sys.maxunicode (probably one of unsigned short, unsigned int, unsigned
long, wchar_t).
Jeff
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Re: Default function arguments, KURL::cleanPath() -- a bindings bug?
Ups, that was meant to go to the pykde list. Sorry, Frans -- http://mail.python.org/mailman/listinfo/python-list
Re: parameter name conflict. How to solve?
Bo Peng wrote: def func(output=''): output(output=output) Naturally, I get 'str' object is not callable. Is there a way to tell func that the first output is actually a function? (like in C++, ::output(output) ) output_alias = output def func (output=''): output_alias(output=output) Daniel -- http://mail.python.org/mailman/listinfo/python-list
Best way to make a list unique?
I have listA=[1,2,3,4,5,4,3,4,3,2,1] and I want a list of only the unique members. This seems inefficient, but works fine over my small sample lists: listA=[a for a in set(listA)] Is there a more efficient approach for cases where listA is large? Eric Pederson ::: domainNot=@something.com domainIs=domainNot.replace(s,z) ePrefix=.join([chr(ord(x)+1) for x in do]) mailMeAt=ePrefix+domainIs ::: -- http://mail.python.org/mailman/listinfo/python-list
Re: How to script DOS app that doesn't use stdout
Gregor [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] There's a DOS console application I am trying to script (in Python), but it doesn't seem to use stdout or stderr... For example, if I redirect output to a file (cmd file.txt), the output still appears on screen. Similarly, the output pipes returned by popen* don't catch the app's output. How might this app be generating its output? Any thoughts on how it could be captured (perhaps with something in the win32 extensions)? Paul Watson [EMAIL PROTECTED] wrote in news:[EMAIL PROTECTED]: The good-ole DOS app could be doing many things. It could be making BIOS calls or writing directly to the video display memory at segment 0xB800. One would think that if it did a DUP of stdout that it might get captured, but apparently you have tried the popen* family. Any hints as to what the DOS app is? If it is known by anyone, perhaps a workaround is also known. Hmmm. Sounds like scripting this app might be a bit of a problem... I don't think the program was available to the general public... It's called PC-Bill. It's used to send doctors' bills to the Canadian government. Greg. -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe Python2.4 and warning: string/unicode conversion
Miki Tebeka wrote: I'm shipping an application using py2exe. With Python2.3 it worked fine but when switching to Python2.4 I started getting warning: string/unicode conversion all over the place. Any ideas how to solve this (other than using 'filterwarnings')? It is really surprising that you get this, as the only occurrence of the string string/unicode conversion in Python was *removed* in Python 2.4. It was present in 2.3, and occurred if strtoul returned an overflow error. Are you sure you are using Python 2.4? Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Best way to make a list unique?
Eric Pederson wrote: I have listA=[1,2,3,4,5,4,3,4,3,2,1] and I want a list of only the unique members. This seems inefficient, but works fine over my small sample lists: listA=[a for a in set(listA)] Is there a more efficient approach for cases where listA is large? No. But I doubt that that is what you actually want, as listA will lose its order afterwards. Typically, something like that gets written like this: inserted = set() res = [] for e in listA: if not e in inserted: res.append(e) inserted.add(e) listA = res Or, with a little helperfunction: inserted = set() def foo(e): inserted.add(e) return e listA = [foo(e) for e in listA if not e in inserted] But ist's not really much better. -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating module skeleton from unit tests
Peter Maas [EMAIL PROTECTED] writes:
I think this is too difficult, because there are many ways to write
code (even skeletons) for a use case. An easier approach would
be to write the skeleton manually, embed the test cases in the doc
strings and generate the test code from the doc strings. If I
remember correctly IBM has published something to generate unit
tests from code. Python has a doctest module to support testing
derived from doc strings. This can be combined with unit tests.
Yes - actually I channged my mind in somewhere in the article - I actually
don't want to create typical use-cases in the test bed, rather create a
skeleton which covers each method at least somehow (no code inside skeleton
would be needed).
The problem can be solved more easily if you design the module
skeleton first, then the tests and then the logic for the skeleton
- you would be creating tests before the code, but many people
wouldn't regard it as TDD then.
You shouldn't care if your approach works for you.
Yes, you are right. I didn't select my words very well - I just meant that it
wouldn't be TDD then. Of course it might work, but I'd like to to it the TDD
way for now.
But thanks for the tip, I could see what IBM has done and then forget about
doing it automatically :)
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# Edvard Majakari Software Engineer
# PGP PUBLIC KEY available Soli Deo Gloria!
$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),\n;
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Re: shuffle the lines of a large file
Raymond Hettinger [EMAIL PROTECTED] wrote:
from random import random
out = open('corpus.decorated', 'w')
for line in open('corpus.uniq'):
print out, '%.14f %s' % (random(), line),
out.close()
sort corpus.decorated | cut -c 18- corpus.randomized
Very good solution!
Sort is truly excellent at very large datasets. If you give it a file
bigger than memory then it divides it up into temporary files of
memory size, sorts each one, then merges all the temporary files back
together.
You tune the memory sort uses for in memory sorts with --buffer-size.
Its pretty good at auto tuning though.
You may want to set --temporary-directory also to save filling up your
/tmp.
In a previous job I did a lot of stuff with usenet news and was
forever blowing up the server with scripts which used too much memory.
sort was always the solution!
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looking for way to include many times some .py code from another python code
Hi, I'm looking for some easy way to do something like include in c or PHP. Imagine I would like to have: cat somefile.py a = 222 b = 111 c = 9 cat somefile2.py self.xxx = a self.zzz = b self.c = c self.d = d cat anotherfile.py def a(): include somefile postprocess(a) def b(): include somefile postprocess(a, b, c) class klass(): def __init__(self, a, b, c, d): include somefile2 I know about module imports and reloads, but am not sure if this is the right way to go. Mainly, I want to assign to multiple object instances some self bound variables. Their values will be different, so I can't use global variables. Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Speeding up CGIHTTPServer (Tim Roberts)
On Tue, 8 Mar 2005 10:25:46 +0100 (CET), [EMAIL PROTECTED] wrote: I'm using CGIHTTPServer (via its test() method) to test some CGI on my Windoze 98 box. I find that the execution is very slow. Is there anything I can do to make sure I'm getting the best performance out of CGIHTTPServer? Compared to what, and on what hardware? CGI is not a rip-roaring performance demon on any platform, but CGIHTTPServer is designed to be convenient more than fast. It isn't going to do as well as a native server. The key question you need ask is this: is it fast enough? If you're doing a web page for internal use that is only going to get a hundred hits a day, who cares if each page takes 5 seconds to render? If you're doing 10,000 hits a day, you need to choose something other than Windows 98. Fair enough. Pretend my question said compared to apache, but also to CGIHTTPServer on linux. The Windows box has modest specs Celeron 2.8GHz, 256MB, but it takes 30-60s render pages. I was using it to test my cgi locally, ie. no network, one user Windows bashing is fun :-) but unfortunately I don't think that is the issue here. The answer I was looking for was something like - yes, change config file so-and-so in such-and-such a way or simply no. If there is no way to improve performance, could anyone tell my _why_ it's running so slowly? Presumably spawning a process takes some time. The code I'm running as CGI is not hectic at all. Thanks in advance, Johan -- Using Opera's revolutionary e-mail client: http://www.opera.com/m2/ Please find our disclaimer at http://www.ukzn.ac.za/disclaimer gwavasig -- http://mail.python.org/mailman/listinfo/python-list
Re: Google Technology
Thank you all! It's a good start for me...with the info. u provided. -- http://mail.python.org/mailman/listinfo/python-list
Re: Speeding up CGIHTTPServer (Tim Roberts)
If there is no way to improve performance, could anyone tell my _why_ it's running so slowly? Presumably spawning a process takes some time. The code I'm running as CGI is not hectic at all. Just an educated guess: Maybe some timeouts or slowly answered requests are the problem - e.g. DNS is often a candidate than can slow down network experience a lot. So maybe thats causing your trouble? -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: Best way to make a list unique?
Eric Pederson wrote: I have listA=[1,2,3,4,5,4,3,4,3,2,1] and I want a list of only the unique members. This seems inefficient, but works fine over my small sample lists: listA=[a for a in set(listA)] Is there a more efficient approach for cases where listA is large? no. Even though the code can be a little simpler: listA = list(Set(listA)) You don't even need to convert it to a list. You can just iterate over the set. la = [1,2,3,4,3,2,3,4,5] from sets import Set sa = Set(la) for itm in sa: ... print itm 1 2 3 4 5 -- hilsen/regards Max M, Denmark http://www.mxm.dk/ IT's Mad Science -- http://mail.python.org/mailman/listinfo/python-list
Re: Speeding up CGIHTTPServer
Tim Roberts wrote: Johan Kohler [EMAIL PROTECTED] wrote: I'm using CGIHTTPServer (via its test() method) to test some CGI on my Windoze 98 box. I find that the execution is very slow. Is there anything I can do to make sure I'm getting the best performance out of CGIHTTPServer? Compared to what, and on what hardware? CGI is not a rip-roaring performance demon on any platform, but CGIHTTPServer is designed to be convenient more than fast. It isn't going to do as well as a native server. The key question you need ask is this: is it fast enough? If you're doing a web page for internal use that is only going to get a hundred hits a day, who cares if each page takes 5 seconds to render? If you're doing 10,000 hits a day, you need to choose something other than Windows 98. There are some other options. Microsoft has Personal Web Server for Win98, although I think it's awfully hard to configure. thttpd and xitami are good lightweight web servers. Apache works quite well in Windows, but I don't think it is very happy on Windows 98. It's OK if you update the TCP/IP stack, but Xitami is a much easier lightweight install. regards Steve -- http://mail.python.org/mailman/listinfo/python-list
Re: Speeding up CGIHTTPServer (Tim Roberts)
Am Tue, 08 Mar 2005 13:56:57 +0200 schrieb Johan Kohler: On Tue, 8 Mar 2005 10:25:46 +0100 (CET), [EMAIL PROTECTED] wrote: I'm using CGIHTTPServer (via its test() method) to test some CGI on my Windoze 98 box. I find that the execution is very slow. Is there anything I can do to make sure I'm getting the best performance out of CGIHTTPServer? Hi, Maybe a personal firewall or virus-checker slows it down. Thomas -- Thomas Güttler, http://www.thomas-guettler.de/ -- http://mail.python.org/mailman/listinfo/python-list
Good variable names (Was: Re: Best way to make a list unique?)
Diez B. Roggisch [EMAIL PROTECTED] wrote: inserted = set() res = [] for e in listA: if not e in inserted: res.append(e) inserted.add(e) listA = res I'm going to go off on a tangent here and put in a plea for better variable naming. I'm looking at the above code, and can't figure out what res is supposed to be. Is it short for rest, as in the rest of the items? Residual? Result? Restore? Any of these seems plausable. Not knowing which makes it much harder to understand what the code does. When you say res.append(e), are you building up the result that you're going to return, or are you building up a list of elements that got eliminated (i.e. residual) because they are duplicates? Yes, I did eventually figure it out. It didn't even take that long, but this is a trivial little piece of code; it shouldn't have taken any time at all to figure it out. All you saved by using res instead of result was 9 keystrokes (ult, in three places), but it cost every one of your readers extra brainpower to figure out what you meant. To quote one of Aahz's better signatures, Typing is cheap. Thinking is expensive. :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from another python code
On Tuesday 08 March 2005 12:41, Martin MOKREJ wrote:
cat somefile.py
a = 222
b = 111
c = 9
cat anotherfile.py
def a():
include somefile
postprocess(a)
What about :
def a():
exec open('somefile.py')
postprocess(a)
You can even use the optional dictionary parameter:
class klass(object):
pass
a = klass()
exec open('somefile.py') in a.__dict__
print a.a, a.b, a.c
222 111 9
Cheers,
BranoZ
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Re: looking for way to include many times some .py code from anotherpython code
Martin MOKREJ wrote: Hi, I'm looking for some easy way to do something like include in c or PHP. Imagine I would like to have: I know about module imports and reloads, but am not sure if this is the right way to go. Mainly, I want to assign to multiple object instances some self bound variables. Their values will be different, so I can't use global variables. Someone will, no doubt, find a way to code this. I suggest you are fighting the language here -- learn to use it instead. Decide what you really want to do, not how you want to do it. Then try to figure out how to accomplish your real goal in the normal flow of the language. -Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
[Fwd: Re: quick question]
--
Neil Benn
Senior Automation Engineer
Cenix BioScience
BioInnovations Zentrum
Tatzberg 46
D-01307
Dresden
Germany
Tel : +49 (0)351 4173 154
e-mail : [EMAIL PROTECTED]
Cenix Website : http://www.cenix-bioscience.com
---BeginMessage---
Leeds, Mark wrote:
I have a string variable say 8023 and
I want to get rid of the beginning
And ending quotes.
Ive tried different things
But havent had any success.
Im definitely a python hacker and
Not an expert. Thanks.
Mark
Hello,
You can use strip (pass in a char):
. strDemo = 'neil'
. strDemo.strip('')
'neil'
.
Cheers,
Neil
--
Neil Benn
Senior Automation Engineer
Cenix BioScience
BioInnovations Zentrum
Tatzberg 46
D-01307
Dresden
Germany
Tel : +49 (0)351 4173 154
e-mail : [EMAIL PROTECTED]
Cenix Website : http://www.cenix-bioscience.com
---End Message---
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RE: Best way to make a list unique?
Title: RE: Best way to make a list unique? [Max M] #- la = [1,2,3,4,3,2,3,4,5] #- from sets import Set #- sa = Set(la) #- for itm in sa: #- ... print itm Remember that in Python 2.4 you have ´´set´´ as a built-in data type: la = [1,2,3,4,3,2,3,4,5] sa = set(la) for it in sa: print it 1 2 3 4 5 . Facundo Bitácora De Vuelo: http://www.taniquetil.com.ar/plog PyAr - Python Argentina: http://pyar.decode.com.ar/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Good variable names (Was: Re: Best way to make a list unique?)
I'm going to go off on a tangent here and put in a plea for better
variable
naming. I'm looking at the above code, and can't figure out what res is
supposed to be. Is it short for rest, as in the rest of the items?
Residual? Result? Restore? Any of these seems plausable. Not knowing
which makes it much harder to understand what the code does. When you say
res.append(e), are you building up the result that you're going to
return, or are you building up a list of elements that got eliminated
(i.e. residual) because they are duplicates?
Yes, I did eventually figure it out. It didn't even take that long, but
this is a trivial little piece of code; it shouldn't have taken any time
at
all to figure it out. All you saved by using res instead of result
was 9 keystrokes (ult, in three places), but it cost every one of your
readers extra brainpower to figure out what you meant. To quote one of
Aahz's better signatures, Typing is cheap. Thinking is expensive. :-)
I usually use much more telling variable names - from the source I just
wrote a minute ago:
self.selection_color_map = {}
self.selection_color = (255,255,0)
self.assigned_color_map = {}
self.default_color = (0,0,0)
self.known_names = sets.Set()
As you can see - no desire to shorten names. But res for result is as
hardwired to me as i,j,k for iterating numbers. So bear with me on this
case.
--
Regards,
Diez B. Roggisch
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Re: Best way to make a list unique?
Max M wrote: Eric Pederson wrote: listA = list(Set(listA)) As of 2.4, set is a built-in type (2.3 had Set in module sets). Another 2.4-ism is sorted, which might very well be the way you want to turn the set into a list: listA = sorted(set(listA)) for this particular use, you can define sorted in 2.3 as: def sorted(iterable): result = list(iterable) result.sort() return result The full sorted functionality can be (and has been) defined in 2.3, but just using 2.4 would be a better bet. --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Martin MOKREJ wrote: Hi, I'm looking for some easy way to do something like include in c or PHP. Imagine I would like to have: cat somefile.py a = 222 b = 111 c = 9 cat somefile2.py self.xxx = a self.zzz = b self.c = c self.d = d cat anotherfile.py def a(): include somefile postprocess(a) def b(): include somefile postprocess(a, b, c) class klass(): def __init__(self, a, b, c, d): include somefile2 You can do this with module-level variables and a base class for klass: cat somefile.py a = 222 b = 111 c = 9 cat somefile2.py class base: def __init__(self, a, b, c, d): self.xxx = a self.zzz = b self.c = c self.d = d cat anotherfile.py import somefile, somefile2 def a(): postprocess(somefile.a) def b(): postprocess(somefile.a, somefile.b, somefile.c) class klass(somefile2.base): def __init__(self, a, b, c, d): somefile2.base.__init__(self, a, b, c, d) Kent I know about module imports and reloads, but am not sure if this is the right way to go. Mainly, I want to assign to multiple object instances some self bound variables. Their values will be different, so I can't use global variables. Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Scott David Daniels wrote: Martin MOKREJ wrote: Hi, I'm looking for some easy way to do something like include in c or PHP. Imagine I would like to have: I know about module imports and reloads, but am not sure if this is the right way to go. Mainly, I want to assign to multiple object instances some self bound variables. Their values will be different, so I can't use global variables. Someone will, no doubt, find a way to code this. I suggest you are fighting the language here -- learn to use it instead. Decide what you really want to do, not how you want to do it. Then try to figure out how to accomplish your real goal in the normal flow of the language. See my post on Mar 2 about automating assignment of class variables. I got no answers, maybe I wasn't clear enough ... :( I need to define lots of variables. The variable names are often identical. The problem is that if I put such a code into a function ... no, I'm not going to pass anything to a function to get it returned back. I just want to get lots of variables assigned, that all. If I put them into module, it get's exectued only once unless I do reload. And I'd have to use: from some import *, because mainly I'm interrested in assigning to self: self.x = blah self.y = uhm I'm newbie, sure. M. -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Kent Johnson wrote: Martin MOKREJ wrote: Hi, I'm looking for some easy way to do something like include in c or PHP. Imagine I would like to have: cat somefile.py a = 222 b = 111 c = 9 cat somefile2.py self.xxx = a self.zzz = b self.c = c self.d = d cat anotherfile.py def a(): include somefile postprocess(a) def b(): include somefile postprocess(a, b, c) class klass(): def __init__(self, a, b, c, d): include somefile2 You can do this with module-level variables and a base class for klass: cat somefile.py a = 222 b = 111 c = 9 cat somefile2.py class base: def __init__(self, a, b, c, d): self.xxx = a self.zzz = b self.c = c self.d = d cat anotherfile.py import somefile, somefile2 def a(): postprocess(somefile.a) def b(): postprocess(somefile.a, somefile.b, somefile.c) class klass(somefile2.base): def __init__(self, a, b, c, d): somefile2.base.__init__(self, a, b, c, d) Oh, I've picked up not the best example. I wanted to set the variables not under __init__, but under some other method. So this is actually what I really wanted. class klass(somefile2.base): def __init__(): pass def set_them(self, a, b, c, d): somefile2.base.__init__(self, a, b, c, d) Thanks! Martin -- http://mail.python.org/mailman/listinfo/python-list
Sorting dictionary by 'sub' value
I have a dictionary of images. I wish to sort the dictionary 'v' by a
dictionary value using python 2.3. The dictionary value is the date
attribute as shown here:
v[imagename][9]['date']
This attribute is an extracted EXIF value from the following set:
data element [9] of v[imagename]:
{'now': datetime.date(2005, 3, 7),
'y' : (0x011B) Ratio=72 @ 182,
'ctime' : datetime.date(2005, 3, 7),
'width' : (0xA002) Long=1024 @ 434,
'length' : (0xA003) Long=768 @ 446,
'date': (0x9004) ASCII=2004:12:07 00:18:20 @ 514,
'x' : (0x011A) Ratio=72 @ 174,
'model' : (0x0110) ASCII=PENTAX Optio 330 @ 156,
'size': 367415L,
'orientation' : (0x0112) Short=1 @ 42}
Thanks,
Rory
--
Rory Campbell-Lange
[EMAIL PROTECTED]
www.campbell-lange.net
--
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Re: looking for way to include many times some .py code from anotherpython code
Diez B. Roggisch wrote:
See my post on Mar 2 about automating assignment of class variables.
I got no answers, maybe I wasn't clear enough ... :(
Seems so - I for example didn't understand it.
I need to define lots of variables. The variable names are often
identical. The problem is that if I put such a code into a function ...
no, I'm not going to pass anything to a function to get it returned back.
I just want to get lots of variables assigned, that all. If I put them
into module, it get's exectued only once unless I do reload. And I'd have
to use: from some import *, because mainly I'm interrested in assigning
to self: self.x = blah
self.y = uhm
Okay, I try and guess: From your two posts I infer that you want to set
variables in instances. But you've got lots of these and you don't want to
write code like this:
class Foo:
def __init__(self, a, b, .):
self.a = a
self.b = b
If that is what you want, then this might help you: Put all the values in a
Good guess! ;)
dictionary - like this:
my_vals = {a: 1, b : 2, }
There are plenty of other ways to create such a dictionary, but I won't
digress on that here.
Now in your class, you pass than dict to your constructor and then simply
update the instance's __dict__ so that the keys-value-pairs in my_vals
become attributes:
class Foo:
def __init__(self, my_vals):
self.__dict__.update(my_vals)
foo = Foo(my_vals)
print foo.a
- 1
Hope this helps,
Sure. Thanks! Would you prefer exactly for this method over the method
posted by Kent Johnson
few minutes ago?
Am I so deperately fighting the language? No-one here on the list needs to set
hundreds
variables at once somewhere in their code? I still don't get why:
include somefile.py would be that non-pythonic so that it's not available, but
I have already two choices how to proceed anyway. Thanks. ;)
Now have to figure out how to assign them easily into the XML tree.
martin
--
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Re: Accessing files installed with distutils
I was wondering how to do this too. I'm trying to write a distutils
setup.py script that has some data I'd like to include. From the
distutils docs I get
data_files specifies a sequence of (directory, files) pairs in the
following way:
setup(...
data_files=[('bitmaps', ['bm/b1.gif', 'bm/b2.gif']),
('config', ['cfg/data.cfg']),
('/etc/init.d', ['init-script'])]
)
I can use sys.prefix to find the top level where python is installed,
but this doesn't tell me specifically where site-packages is. On my
Linux box it is in
{sys.prefix}/lib/python2.3/site-packages
but on Windows, it's in
{sys.prefix}/Lib/site-packages.
Do I need to use sys.platform (along with sys.version) to check what
type of machine I'm on, or is there some better method to get the
location of site-packages?
Thanks.
--
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Re: Appeal for python developers
BOOGIEMAN [EMAIL PROTECTED] wrote: Please include goto command in future python realeses I know that proffesional programers doesn't like to use it, but for me as newbie it's too hard to get used replacing it with while, def or other commands It was only when I read this thread that I realized that Python doesn't have a goto! I guess the fact that I wrote programs 25+ years ago in another programming language that didn't have goto either has influenced the way I program! -- Huw Davies | e-mail: [EMAIL PROTECTED] Melbourne| If soccer was meant to be played in the Australia| air, the sky would be painted green -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting dictionary by 'sub' value
I have a dictionary of images. I wish to sort the dictionary 'v' by a
dictionary value using python 2.3. The dictionary value is the date
attribute as shown here:
v[imagename][9]['date']
This attribute is an extracted EXIF value from the following set:
data element [9] of v[imagename]:
{'now': datetime.date(2005, 3, 7),
'y' : (0x011B) Ratio=72 @ 182,
'ctime' : datetime.date(2005, 3, 7),
'width' : (0xA002) Long=1024 @ 434,
'length' : (0xA003) Long=768 @ 446,
'date': (0x9004) ASCII=2004:12:07 00:18:20 @ 514,
'x' : (0x011A) Ratio=72 @ 174,
'model' : (0x0110) ASCII=PENTAX Optio 330 @ 156,
'size': 367415L,
'orientation' : (0x0112) Short=1 @ 42}
You can't sort dicts - they don't impose an order on either key or value.
There are ordered dict implementations out there, but AFAIK the only keep
the keys sorted, or maybe the (key,values) in the insertion order.
But maybe this helps you:
l = v.items()
l.sort(lambda a, b: cmp(a[9]['date'], b[9]['date'])
--
Regards,
Diez B. Roggisch
--
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Re: parameter name conflict. How to solve?
Bo Peng a écrit : Dear list, If you ask: why do you choose these names? The answer is: they need to be conformable with other functions, parameter names. I have a function that pretty much like: def output(output=''): print output and now in another function, I need to call output function, with again keyword parameter output def func(output=''): output(output=output) Naturally, I get 'str' object is not callable. Is there a way to tell func that the first output is actually a function? (like in C++, ::output(output) ) Thanks. Bo What I'd suggest is : def func(output=''): gobals()[output](output=output) that way, the function resolution is still dynamic, but you explicitly ask for a name global and not local ... Pierre -- http://mail.python.org/mailman/listinfo/python-list
Re: determine directories with wildcard
Thomas Rademacher wrote: Hello, I want to collect with the wildcard '*' all existing directories. For example: /dir/dir/*/dir/*/dir/* or C:\dir\dir\*\dir\*\dir\* How can I resolve this problem? This is some sort of pattern matching. What I'd do is to convert your pattern to a regex: rex = re.compile(r/dir/dir/.*/dir/.*/dir/.*) Then create a list of dirs with os.walk: dirs = [dirpath for dirpath, foo, bar in os.walk(topdir) if rex.match(dirpath)] This is untested, but should do the trick. -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: determine directories with wildcard
On Tuesday 08 March 2005 14:33, Thomas Rademacher wrote: How can I resolve this problem? python import glob help(glob) or look at the online documentation for glob. -- --- Heiko. pgp6MyvJSQxu3.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Split text file into words
The standard split() can use only one delimiter. To split a text file into words you need multiple delimiters like blank, punctuation, math signs (+-*/), parenteses and so on. I didn't succeeded in using re.split()... -- http://mail.python.org/mailman/listinfo/python-list
Re: determine directories with wildcard
Thomas Rademacher wrote: Hello, I want to collect with the wildcard '*' all existing directories. For example: /dir/dir/*/dir/*/dir/* or C:\dir\dir\*\dir\*\dir\* How can I resolve this problem? Thanks for your hints, Thomas. You may want to check out the glob module. E.g. something like: import glob, os p = c:/*/*/site-packages/* dirs = [d for d in glob.glob(p) if os.path.isdir(d)] print dirs ['c:/Python23\\Lib\\site-packages\\atox', 'c:/Python23\\Lib\\site-packages\\BDBStorage', 'c:/Python23\\Lib\\site-packages\\BitTorrent', 'c:/Python23\\Lib\\site-packages\\BTrees', 'c:/Python23\\Lib\\site-packages\\ChartDirector', 'c:/Python23\\Lib\\site-packages\\cjkcodecs', 'c:/Python23\\Lib\\site-packages\\ctypes', 'c:/Python23\\Lib\\site-packages\\CVS', 'c:/Python23\\Lib\\site-packages\\elementtree', 'c:/Python23\\Lib\\site-packages\\enchant', 'c:/Python23\\Lib\\site-packages\\Ft', 'c:/Python23\\Lib\\site-packages\\imdb', 'c:/Python23\\Lib\\site-packages\\isapi', 'c:/Python23\\Lib\\site-packages\\logilab', 'c:/Python23\\Lib\\site-packages\\mx', 'c:/Python23\\Lib\\site-packages\\MySQLdb', 'c:/Python23\\Lib\\site-packages\\numarray', 'c:/Python23\\Lib\\site-packages\\OpenGL', 'c:/Python23\\Lib\\site-packages\\OpenGLContext', 'c:/Python23\\Lib\\site-packages\\parallel', 'c:/Python23\\Lib\\site-packages\\Persistence', 'c:/Python23\\Lib\\site-packages\\PIL', 'c:/Python23\\Lib\\site-packages\\psyco', 'c:/Python23\\Lib\\site-packages\\py2exe', 'c:/Python23\\Lib\\site-packages\\pychecker', 'c:/Python23\\Lib\\site-packages\\pynsource', 'c:/Python23\\Lib\\site-packages\\Pyrex', 'c:/Python23\\Lib\\site-packages\\Pyro', 'c:/Python23\\Lib\\site-packages\\pythonwin', 'c:/Python23\\Lib\\site-packages\\pywin32_system32', 'c:/Python23\\Lib\\site-packages\\pyXLWriter', 'c:/Python23\\Lib\\site-packages\\reportlab', 'c:/Python23\\Lib\\site-packages\\serial', 'c:/Python23\\Lib\\site-packages\\spambayes', 'c:/Python23\\Lib\\site-packages\\ThreadedAsync', 'c:/Python23\\Lib\\site-packages\\vrml', 'c:/Python23\\Lib\\site-packages\\win32', 'c:/Python23\\Lib\\site-packages\\win32com', 'c:/Python23\\Lib\\site-packages\\win32comext', 'c:/Python23\\Lib\\site-packages\\wx', 'c:/Python23\\Lib\\site-packages\\wxPython', 'c:/Python23\\Lib\\site-packages\\ZConfig', 'c:/Python23\\Lib\\site-packages\\zdaemon', 'c:/Python23\\Lib\\site-packages\\ZEO', 'c:/Python23\\Lib\\site-packages\\zLOG', 'c:/Python23\\Lib\\site-packages\\ZODB', 'c:/Python23\\Lib\\site-packages\\ZopeUndo', 'c:/Python23\\Lib\\site-packages\\_xmlplus', 'c:/Python24\\Lib\\site-packages\\ChartDirector', 'c:/Python24\\Lib\\site-packages\\elementtidy', 'c:/Python24\\Lib\\site-packages\\elementtree', 'c:/Python24\\Lib\\site-packages\\isapi', 'c:/Python24\\Lib\\site-packages\\py2exe', 'c:/Python24\\Lib\\site-packages\\pythonwin', 'c:/Python24\\Lib\\site-packages\\pywin32_system32', 'c:/Python24\\Lib\\site-packages\\win32', 'c:/Python24\\Lib\\site-packages\\win32com', 'c:/Python24\\Lib\\site-packages\\win32comext', 'c:/Python24\\Lib\\site-packages\\wx-2.5.3-msw-unicode'] -- Vincent Wehren -- http://mail.python.org/mailman/listinfo/python-list
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Re: Split text file into words
On Tuesday 08 March 2005 14:43, qwweeeit wrote: The standard split() can use only one delimiter. To split a text file into words you need multiple delimiters like blank, punctuation, math signs (+-*/), parenteses and so on. I didn't succeeded in using re.split()... Then try again... ;) No, seriously, re.split() can do what you want. Just think about what are word delimiters. Say, you want to split on all whitespace, and ,, ., and ?, then you'd use something like: [EMAIL PROTECTED] ~ $ python Python 2.3.5 (#1, Feb 27 2005, 22:40:59) [GCC 3.4.3 20050110 (Gentoo Linux 3.4.3.20050110, ssp-3.4.3.20050110-0, pie-8.7 on linux2 Type help, copyright, credits or license for more information. import re teststr = Hello qwweeeit, how are you? I am fine, today, actually. re.split(r[\s\.,\?]+,teststr) ['Hello', 'qwweeeit', 'how', 'are', 'you', 'I', 'am', 'fine', 'today', 'actually', ''] Extending with other word separators shouldn't be hard... Just have a look at http://docs.python.org/lib/re-syntax.html HTH! -- --- Heiko. pgpiHbI7zcTjy.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: determine directories with wildcard
On Tue, 8 Mar 2005 14:33:59 +0100, Thomas Rademacher [EMAIL PROTECTED] wrote: Hello, I want to collect with the wildcard '*' all existing directories. For example: /dir/dir/*/dir/*/dir/* or C:\dir\dir\*\dir\*\dir\* How about something like: import fnmatch import os root = 'd:\\' filter = r'*\*python*\*' for dirpath, dirnames, filenames in os.walk(root): if fnmatch.fnmatch(dirpath, filter): print 'matched', dirpath -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing files installed with distutils
[EMAIL PROTECTED] wrote:
I was wondering how to do this too. I'm trying to write a distutils
setup.py script that has some data I'd like to include. From the
distutils docs I get
data_files specifies a sequence of (directory, files) pairs in the
following way:
setup(...
data_files=[('bitmaps', ['bm/b1.gif', 'bm/b2.gif']),
('config', ['cfg/data.cfg']),
('/etc/init.d', ['init-script'])]
)
I can use sys.prefix to find the top level where python is installed,
but this doesn't tell me specifically where site-packages is. On my
Linux box it is in
{sys.prefix}/lib/python2.3/site-packages
but on Windows, it's in
{sys.prefix}/Lib/site-packages.
Do I need to use sys.platform (along with sys.version) to check what
type of machine I'm on, or is there some better method to get the
location of site-packages?
This is one of the areas where distutils could probably do with some
improvement. I don;t know whether it's on any developers priority list,
though.
regards
Steve
--
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Re: Speeding up CGIHTTPServer (Tim Roberts)
Diez B. Roggisch wrote: If there is no way to improve performance, could anyone tell my _why_ it's running so slowly? Presumably spawning a process takes some time. The code I'm running as CGI is not hectic at all. Just an educated guess: Maybe some timeouts or slowly answered requests are the problem - e.g. DNS is often a candidate than can slow down network experience a lot. So maybe thats causing your trouble? I also got very slow responses using Python's HTTP server library. I found that changing the address_string(self) method in BaseHTTPServer.BaseHTTPRequestHandler to return self.client_address[0] instead of doing a hostname lookup cured the problem. The doc string says the method is only used for logging, and so far I've experienced no ill side effects. -- Steve -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code fromanotherpython code
Martin MOKREJ wrote: Oh, I've picked up not the best example. I wanted to set the variables not under __init__, but under some other method. So this is actually what I really wanted. class klass(somefile2.base): def __init__(): pass def set_them(self, a, b, c, d): somefile2.base.__init__(self, a, b, c, d) In that case you can define set_them() directly in the base class and omit set_them from klass: class base: def set_them(self, a, b, c, d): self.a = a # etc I'm guessing here, but if a, b, c, d are the same variables defined in your original somefile.py, and the intent is to make them attributes of the klass instance, you could do something like this and avoid listing all the arguments to klass.set_them(): ## somefile.py a = 222 b = 111 c = 9 def set_them(obj): obj.a = a obj.b = b obj.c = c ## anotherfile.py import somefile class klass: def set_them(self): somefile.set_them(self) Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Martin MOKREJ wrote: Am I so deperately fighting the language? No-one here on the list needs to set hundreds variables at once somewhere in their code? I still don't get why: I've certainly never needed to set hundreds of variables at once in my code. I might have hundreds of values, but if so they go into a list or a dictionary or some other suitable data structure. There isn't any point setting hundreds of variables unless you also have hundreds of different expressions accessing hundreds of variables. If they are all accessed in a similar way then this indicates they shouldn't be separate variables. If they are all accessed differently then you have some very complex code and hard to maintain code which can probably be simplified. Can you give a use case where you think 'hundreds of variables' would be needed? -- http://mail.python.org/mailman/listinfo/python-list
Re: determine directories with wildcard
Thanks. It works fine! Thomas Vincent Wehren [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] Thomas Rademacher wrote: Hello, I want to collect with the wildcard '*' all existing directories. For example: /dir/dir/*/dir/*/dir/* or C:\dir\dir\*\dir\*\dir\* How can I resolve this problem? Thanks for your hints, Thomas. You may want to check out the glob module. E.g. something like: import glob, os p = c:/*/*/site-packages/* dirs = [d for d in glob.glob(p) if os.path.isdir(d)] print dirs ['c:/Python23\\Lib\\site-packages\\atox', 'c:/Python23\\Lib\\site-packages\\BDBStorage', 'c:/Python23\\Lib\\site-packages\\BitTorrent', 'c:/Python23\\Lib\\site-packages\\BTrees', 'c:/Python23\\Lib\\site-packages\\ChartDirector', 'c:/Python23\\Lib\\site-packages\\cjkcodecs', 'c:/Python23\\Lib\\site-packages\\ctypes', 'c:/Python23\\Lib\\site-packages\\CVS', 'c:/Python23\\Lib\\site-packages\\elementtree', 'c:/Python23\\Lib\\site-packages\\enchant', 'c:/Python23\\Lib\\site-packages\\Ft', 'c:/Python23\\Lib\\site-packages\\imdb', 'c:/Python23\\Lib\\site-packages\\isapi', 'c:/Python23\\Lib\\site-packages\\logilab', 'c:/Python23\\Lib\\site-packages\\mx', 'c:/Python23\\Lib\\site-packages\\MySQLdb', 'c:/Python23\\Lib\\site-packages\\numarray', 'c:/Python23\\Lib\\site-packages\\OpenGL', 'c:/Python23\\Lib\\site-packages\\OpenGLContext', 'c:/Python23\\Lib\\site-packages\\parallel', 'c:/Python23\\Lib\\site-packages\\Persistence', 'c:/Python23\\Lib\\site-packages\\PIL', 'c:/Python23\\Lib\\site-packages\\psyco', 'c:/Python23\\Lib\\site-packages\\py2exe', 'c:/Python23\\Lib\\site-packages\\pychecker', 'c:/Python23\\Lib\\site-packages\\pynsource', 'c:/Python23\\Lib\\site-packages\\Pyrex', 'c:/Python23\\Lib\\site-packages\\Pyro', 'c:/Python23\\Lib\\site-packages\\pythonwin', 'c:/Python23\\Lib\\site-packages\\pywin32_system32', 'c:/Python23\\Lib\\site-packages\\pyXLWriter', 'c:/Python23\\Lib\\site-packages\\reportlab', 'c:/Python23\\Lib\\site-packages\\serial', 'c:/Python23\\Lib\\site-packages\\spambayes', 'c:/Python23\\Lib\\site-packages\\ThreadedAsync', 'c:/Python23\\Lib\\site-packages\\vrml', 'c:/Python23\\Lib\\site-packages\\win32', 'c:/Python23\\Lib\\site-packages\\win32com', 'c:/Python23\\Lib\\site-packages\\win32comext', 'c:/Python23\\Lib\\site-packages\\wx', 'c:/Python23\\Lib\\site-packages\\wxPython', 'c:/Python23\\Lib\\site-packages\\ZConfig', 'c:/Python23\\Lib\\site-packages\\zdaemon', 'c:/Python23\\Lib\\site-packages\\ZEO', 'c:/Python23\\Lib\\site-packages\\zLOG', 'c:/Python23\\Lib\\site-packages\\ZODB', 'c:/Python23\\Lib\\site-packages\\ZopeUndo', 'c:/Python23\\Lib\\site-packages\\_xmlplus', 'c:/Python24\\Lib\\site-packages\\ChartDirector', 'c:/Python24\\Lib\\site-packages\\elementtidy', 'c:/Python24\\Lib\\site-packages\\elementtree', 'c:/Python24\\Lib\\site-packages\\isapi', 'c:/Python24\\Lib\\site-packages\\py2exe', 'c:/Python24\\Lib\\site-packages\\pythonwin', 'c:/Python24\\Lib\\site-packages\\pywin32_system32', 'c:/Python24\\Lib\\site-packages\\win32', 'c:/Python24\\Lib\\site-packages\\win32com', 'c:/Python24\\Lib\\site-packages\\win32comext', 'c:/Python24\\Lib\\site-packages\\wx-2.5.3-msw-unicode'] -- Vincent Wehren -- http://mail.python.org/mailman/listinfo/python-list
RE: Sorting dictionary by 'sub' value
Title: RE: Sorting dictionary by 'sub' value
[Rory Campbell-Lange]
#- I have a dictionary of images. I wish to sort the dictionary 'v' by a
#- dictionary value using python 2.3. The dictionary value is the date
#- attribute as shown here:
You have to use the DSU algorithm (Decorate, Sort, Undecorate), taking in consideration that the final sorted element can not be a dictionary. For example (with a simpler dictionary):
d = {'a': ('m', 5), 'b': ('k', 9), 'c': ('f', 2)}
I want the dictionary values sorted by the number inside the tuple. So I prepare a list with that number first, and the dictionary key in second place:
temp_list = [ (x[1][1], x[0]) for x in d.items() ]
Then, just sort it and use it.
temp_list.sort()
for (tmp, key) in temp_list:
print d[key]
('f', 2)
('m', 5)
('k', 9)
. Facundo
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Todas las opiniones contenidas en este mail son propias del autor del mensaje y no necesariamente coinciden con las de Telefónica Comunicaciones Personales S.A. o alguna empresa asociada.
Los mensajes electrónicos pueden ser alterados, motivo por el cual Telefónica Comunicaciones Personales S.A. no aceptará ninguna obligación cualquiera sea el resultante de este mensaje.
Muchas Gracias.
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Re: Split text file into words
qwweeeit wrote:
The standard split() can use only one delimiter. To split a text file
into words you need multiple delimiters like blank, punctuation, math
signs (+-*/), parenteses and so on.
I didn't succeeded in using re.split()...
Would you care to elaborate on how you tried to use re.split and failed? We
aren't mind readers here. An example of your non-working code along with
the expected result and the actual result would be useful.
This is the first example given in the documentation for re.split:
re.split('\W+', 'Words, words, words.')
['Words', 'words', 'words', '']
Does it do what you want? If not what do you want?
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Re: py2exe error: 2.4.2.4: No such file or directory
Thomas, Right on the mark. Thanks for the help. Larry Bates Thomas Heller wrote: Larry Bates [EMAIL PROTECTED] writes: I had occasion to look back at a project I did over a year ago and needed to make one small change. I use py2exe to package it for distribution via Inno Setup. After making my change I tried to run my setup script that worked fine before and get the following message: F:\SYSCON\WTS\HTMLmenupython HTMLmenuSetup.py py2exe -w running py2exe running build running build_scripts not copying HTMLmenu.py (up-to-date) running install_scripts not copying build\scripts-2.2\HTMLmenu.py (output up-to-date) + | Processing script HTMLmenu.py with py2exe-0.3.3 + Searching modules needed to run 'HTMLmenu.py' on path: ['F:\\SYSCON\\WTS\\HTMLmenu\\build\\bdist.win32\\winexe\\lib\\Python22\\Lib\\sit e-packages', '', 'F:\\Larry\\Python', 'C:\\Python22\\Lib\\site-packages\\Pythonw in', 'C:\\Python22\\Lib\\site-packages\\win32', 'C:\\Python22\\Lib\\site-package s\\win32\\lib', 'C:\\Python22\\Lib\\site-packages', 'C:\\Python22\\DLLs', 'C:\\P ython22\\lib', 'C:\\Python22\\lib\\lib-tk', 'C:\\Python22', 'C:\\Python22\\lib\\ site-packages\\HTMLgen', 'F:\\Larry\\Python\\Library', 'C:\\Python22\\lib\\site- packages\\PIL', 'C:\\Python22\\lib\\site-packages\\dynwin', 'C:\\Python22\\lib\\ site-packages\\npstruct', 'C:\\Python22\\lib\\site-packages\\wxPython'] error: 2.4.2.4: No such file or directory The only thing that I can think of is that perhaps I've upgraded my wxWindows version. I checked and 2.4.2.4 is the version, but I don't know why py2exe is looking for such a directory. Old versions of wxWindows put an entry in the registry under the HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.x\Modules key. This registry entry is (was) used to extend the Python path, but wxWindows used it to register it's version number. You should try to remove this entry and run py2exe again. Thomas -- http://mail.python.org/mailman/listinfo/python-list
capturing text from a GUI window
Anyone know how to capture text from GUI output? I need to process information returned via a GUI window. Earl -- http://mail.python.org/mailman/listinfo/python-list
Re: shuffle the lines of a large file
On 7 Mar 2005 06:38:49 -0800, gry@ll.mit.edu gry@ll.mit.edu wrote: As far as I can tell, what you ultimately want is to be able to extract a random (representative?) subset of sentences. If this is what's wanted, then perhaps some variation on this cookbook recipe might do the trick: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/59865 -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Martin MOKREJ wrote:
Diez B. Roggisch wrote:
See my post on Mar 2 about automating assignment of class variables.
I got no answers, maybe I wasn't clear enough ... :(
Seems so - I for example didn't understand it.
I need to define lots of variables. The variable names are often
identical. The problem is that if I put such a code into a function ...
no, I'm not going to pass anything to a function to get it returned
back.
I just want to get lots of variables assigned, that all. If I put them
into module, it get's exectued only once unless I do reload. And I'd
have
to use: from some import *, because mainly I'm interrested in
assigning
to self: self.x = blah
self.y = uhm
Okay, I try and guess: From your two posts I infer that you want to set
variables in instances. But you've got lots of these and you don't
want to
write code like this:
class Foo:
def __init__(self, a, b, .):
self.a = a
self.b = b
If that is what you want, then this might help you: Put all the values
in a
Good guess! ;)
dictionary - like this:
my_vals = {a: 1, b : 2, }
There are plenty of other ways to create such a dictionary, but I won't
digress on that here.
Now in your class, you pass than dict to your constructor and then simply
update the instance's __dict__ so that the keys-value-pairs in my_vals
become attributes:
class Foo:
def __init__(self, my_vals):
self.__dict__.update(my_vals)
foo = Foo(my_vals)
print foo.a
- 1
Hope this helps,
Sure. Thanks! Would you prefer exactly for this method over the method
posted by Kent Johnson
few minutes ago?
Am I so deperately fighting the language? No-one here on the list needs
to set hundreds
variables at once somewhere in their code? I still don't get why:
Well, consider that you haven't actually made any kind of a case for
using variables!
If the names of these things are dynamic then why would you want to put
them in an object's namespace, when you could just as easily include
self.insDict = {}
in your __init__() method and then simply update self.insDict whenever
you want.
If you set hundreds variables, and their names aren't predictable,
then presumably you will have to go through similar contortions to
access them.
So it is generally simpler just to use a dictionary to hold the values
whose names aren't known in advance. Techniques for inserting names into
namespaces are known (as you have discovered), but when a beginner wants
to know about them it's usually considered a sign of fighting the
language.
So, think about this a while and then tell us exactly *why* it's so
important that these values are stored in variables.
include somefile.py would be that non-pythonic so that it's not
available, but
I have already two choices how to proceed anyway. Thanks. ;)
Now have to figure out how to assign them easily into the XML tree.
martin
You do know there are lots of Python libraries that support XML, right?
regards
Steve
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Re: looking for way to include many times some .py code fromanotherpython code
Martin MOKREJ wrote: If I put them into a module, it get's executed only once unless I do reload. And I'd have to use: from some import *, because mainly I'm interrested in assigning to self: self.x = blah self.y = uhm OK, somewhere in here I think I get what you want to do. Essentially you want to set a lot of attributes on some object which is almost always named self, and the set a lot of attributes varies as separate chunks. The perfect application for a function (not a _pure_ function in the functional programming sense). So, it is my opinion that you want to define a function to call, not include code from some other file. How about: Here are some whole lot of variables functions, put them in 'code.py': def do_a_bunch(obj): obj.a = 123 obj.b = 3.141529 obj.c = 'what on earth?' obj.author = u'Charles Dickens' ... def do_other_stuff(obj): obj.a = 123456789 obj.b2 = 3.141529 ** .5 obj.c = u'Where in Jupiter?' obj.author = u'Martin MOKREJ' ... And here is how you use them: from code import do_a_bunch, do_other_stuff class SomethingOrOther(SomeSuperClass): def __init__(self, stuff, nonsense): SomeSuperClass.__init__(self, stuff) self.fiddle(nonsense) do_a_bunch(self) def some_other_method(self): ... do_a_bunch(self) def mangle(self): ... do_other_stuff(self) I'm newbie, sure. That is why I was trying to figure out your original requirement, not how to accomplish your original plan. I was trying to see if there was a good reason you needed to use #include - like behavior. Does something like this address your problem? --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: shuffle the lines of a large file
On Tue, 8 Mar 2005 14:13:01 +, Simon Brunning [EMAIL PROTECTED] wrote: On 7 Mar 2005 06:38:49 -0800, gry@ll.mit.edu gry@ll.mit.edu wrote: As far as I can tell, what you ultimately want is to be able to extract a random (representative?) subset of sentences. If this is what's wanted, then perhaps some variation on this cookbook recipe might do the trick: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/59865 I couldn't resist. ;-) import random def randomLines(filename, lines=1): selected_lines = list(None for line_no in xrange(lines)) for line_index, line in enumerate(open(filename)): for selected_line_index in xrange(lines): if random.uniform(0, line_index) 1: selected_lines[selected_line_index] = line return selected_lines This has the advantage that every line had the same chance of being picked regardless of its length. There is the chance that it'll pick the same line more than once, though. -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Small but significant memory leak in Pyana XSLT processor
Hi all I'm working with a long running, threaded server which serves HTTP requests with content which are passed through a XSLT processor. The XSLT processor I'm using is the Pyana processor. I have one compiled stylesheet which I uses to process all responses. This way I only need to read and compile the stylesheet once. When serving a rather small page 404-page I get the server to process 300-400 requests per second over a LAN connection. This is from the apache benchmark program, I don't know how reliable these numbers are but they give me some guidance. My problem: When serving my content without the XSLT processor the process size remains the same size. (about 18MB in the windows task manager). But when I use the XSLT processor the process will slowly gain size. About 1MB for each 10k requests, and this memory are not freed. I feel certain that the leak are located in the XSLT processor since the problem occurs when that is plugged into the system. There is not much wrapping code so I don't think the problem are of that manner. So I wonder if anyone have had the same experience with this XSLT toolkit before and if you were able to fix it. The software I'm using on the computer I've done the tests on: Python 2.4 (ActivePython) Pyana 0.9.2 Win XP Pro SP2 I've tried with both precompiled and self compiled versions of the Pyana package. ola -- -- Ola Natvig [EMAIL PROTECTED] infoSense AS / development -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting dictionary by 'sub' value
Diez B. Roggisch wrote: I have a dictionary of images. I wish to sort the dictionary 'v' by a dictionary value using python 2.3. The dictionary value is the date attribute as shown here: v[imagename][9]['date'] ... You can't sort dicts - they don't impose an order on either key or value. There are ordered dict implementations out there, but AFAIK the only keep the keys sorted, or maybe the (key,values) in the insertion order. But maybe this helps you: l = v.items() l.sort(lambda a, b: cmp(a[9]['date'], b[9]['date']) In 2.4, this is simple: ordered_keys = sorted(v, key=lambda name: v[name][9]['date']) In 2.3, or earlier, use decorate-sort-undecorate: decorated = [(value[9]['date'], key) for key, value in v.iteritems()] decorated.sort() result = [key for key, date in decorated] --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Recognizing the Arrival of a New File
Hello- I am writing an application where I need to recognize when a file arrives in a given directory. Files may arrive at any time during the course of the day. Do I set up a cron job to poll the directory every few minutes? Write a daemon to monitor the directory? Or is there some other more common/accepted way to perform this task? I'm using Python 2.3 on Linux. Thanks for your help, --greg -- Greg Lindstrom 501 975.4859 Computer Programmer [EMAIL PROTECTED] NovaSys Health Little Rock, Arkansas We are the music makers, and we are the dreamers of dreams. W.W. -- http://mail.python.org/mailman/listinfo/python-list
Re: shuffle the lines of a large file
On Tuesday 08 March 2005 15:28, Simon Brunning wrote: This has the advantage that every line had the same chance of being picked regardless of its length. There is the chance that it'll pick the same line more than once, though. Problem being: if the file the OP is talking about really is 80GB in size, and you consider a sentence to have 80 bytes on average (it's likely to have less than that), that makes 10^9 sentences in the file. Now, multiply that with the memory overhead of storing a list of 10^9 None(s), and reconsider, whether that algorithm really works for the posted conditions. I don't think that any machine I have access to even has near enough memory just to store this list... ;) -- --- Heiko. pgpp8eZ4iUwn7.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: Small but significant memory leak in Pyana XSLT processor
Ola Natvig wrote: My problem: When serving my content without the XSLT processor the process size remains the same size. (about 18MB in the windows task manager). But when I use the XSLT processor the process will slowly gain size. About 1MB for each 10k requests, and this memory are not freed. I feel certain that the leak are located in the XSLT processor since the problem occurs when that is plugged into the system. There is not much wrapping code so I don't think the problem are of that manner. So I wonder if anyone have had the same experience with this XSLT toolkit before and if you were able to fix it. I'm the author of the Pyana package and, to the best of my knowledge, Pyana does not have any memory leaks. It seems like there are three possibilities: your code is leaking somehow (seems unlikely based on the above), Pyana is leaking (very possible) or Xalan is leaking (very possible). If Pyana is leaking then it is likely that the problem can be fairly easily isolated and fixed (by me). Would it be possible for you to isolate the leaking code and send it to me? If that is not possible, then let me know and I can recommend steps to help find the problem youself. Cheers, Brian -- http://mail.python.org/mailman/listinfo/python-list
Re: shuffle the lines of a large file
On Tue, 8 Mar 2005 15:49:35 +0100, Heiko Wundram [EMAIL PROTECTED] wrote: Problem being: if the file the OP is talking about really is 80GB in size, and you consider a sentence to have 80 bytes on average (it's likely to have less than that), that makes 10^9 sentences in the file. Now, multiply that with the memory overhead of storing a list of 10^9 None(s), and reconsider, whether that algorithm really works for the posted conditions. I don't think that any machine I have access to even has near enough memory just to store this list... ;) Ah, but that's the clever bit; it *doesn't* store the whole list - only the selected lines. -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: quick question
On Mon, 7 Mar 2005 18:58:20 -0500, Leeds, Mark [EMAIL PROTECTED] wrote:
I have a string variable say 8023 and
I want to get rid of the beginning
And ending quotes.
Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32
Type help, copyright, credits or license for more information.
my_string = '8023 '
my_string
'8023 '
my_string.strip('')
'8023 '
--
Cheers,
Simon B,
[EMAIL PROTECTED],
http://www.brunningonline.net/simon/blog/
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Re: python -i (interactive environment)
Found that out :-( You can use the local=locals() option so at least you have access to the local variables, which in the case of debugging, is exactly what I needed. Since -i gives you control at the end of the program the locals are already gone. Seems like both approaches have their advantages depending on the situation. Steve Holden [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Unfortunately it does so in an entirely new namespace, thereby losing the advantage of -i - namely, that you can investigate the program's namespace after it's terminated. -- http://mail.python.org/mailman/listinfo/python-list
Re: python -i (interactive environment)
Right, but only one namespace. Would be nice if there was a way to give it
both the global and the local namespaces. In my case though the local
namespace was sufficient.
Just [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
code.interact() has a namespace argument ('local'), so it really easy to
have it use the namespace you want.
Just
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RE: Recognizing the Arrival of a New File
Title: RE: Recognizing the Arrival of a New File [Greg Lindstrom] #- I am writing an application where I need to recognize when a file #- arrives in a given directory. Files may arrive at any time #- during the #- course of the day. Do I set up a cron job to poll the #- directory every #- few minutes? Write a daemon to monitor the directory? Or #- is there some #- other more common/accepted way to perform this task? I'm #- using Python #- 2.3 on Linux. You can check the date info of the directory: [EMAIL PROTECTED] ~ ll -d gsm drwxr-xr-x 3 fbatista root 4096 feb 25 2004 gsm [EMAIL PROTECTED] ~ cd gsm [EMAIL PROTECTED] ~/gsm touch w [EMAIL PROTECTED] ~/gsm cd .. [EMAIL PROTECTED] ~ ll -d gsm drwxr-xr-x 3 fbatista root 4096 mar 8 12:15 gsm Regards, . Facundo Bitácora De Vuelo: http://www.taniquetil.com.ar/plog PyAr - Python Argentina: http://pyar.decode.com.ar/ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADVERTENCIA. La información contenida en este mensaje y cualquier archivo anexo al mismo, son para uso exclusivo del destinatario y pueden contener información confidencial o propietaria, cuya divulgación es sancionada por la ley. Si Ud. No es uno de los destinatarios consignados o la persona responsable de hacer llegar este mensaje a los destinatarios consignados, no está autorizado a divulgar, copiar, distribuir o retener información (o parte de ella) contenida en este mensaje. Por favor notifíquenos respondiendo al remitente, borre el mensaje original y borre las copias (impresas o grabadas en cualquier medio magnético) que pueda haber realizado del mismo. Todas las opiniones contenidas en este mail son propias del autor del mensaje y no necesariamente coinciden con las de Telefónica Comunicaciones Personales S.A. o alguna empresa asociada. Los mensajes electrónicos pueden ser alterados, motivo por el cual Telefónica Comunicaciones Personales S.A. no aceptará ninguna obligación cualquiera sea el resultante de este mensaje. Muchas Gracias. -- http://mail.python.org/mailman/listinfo/python-list
Re: autoexecution in Windows
Bill wrote: I can double click on a .py file and it executes, or use the command prompt. I believe if you install the Activestate distribution it sets up the file registrations automatically. As does the standard Windows distribution from python.org. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Recognizing the Arrival of a New File
On Tue, 08 Mar 2005 08:43:04 -0600, rumours say that Greg Lindstrom [EMAIL PROTECTED] might have written: I am writing an application where I need to recognize when a file arrives in a given directory. Files may arrive at any time during the course of the day. Do I set up a cron job to poll the directory every few minutes? Write a daemon to monitor the directory? Or is there some other more common/accepted way to perform this task? I'm using Python 2.3 on Linux. The most common way to watch for a file or a directory change (in my experience) is to use the SGI fam (file alteration monitor); I think it has been ported to Linux. Otherwise, either way you describe is common use. Suggestion: first check for changes in the st_mtime of the directory, then search for the file existence. -- TZOTZIOY, I speak England very best. Be strict when sending and tolerant when receiving. (from RFC1958) I really should keep that in mind when talking with people, actually... -- http://mail.python.org/mailman/listinfo/python-list
Dr. Dobb's Python-URL! - weekly Python news and links (Mar 7)
QOTW: Really, of course, the only things you need to make explicit are the ones that readers don't understand. -- Steve Holden Working with unicode objects in Python is so transparent, it's easy to forget about what a C extension would likely want. -- Kevin Dangoor You take leadership in a small area, and you keep it as long as you care to. -- Max M, on the slender rewards of open-source authorship Even with everything else going on at PyCon2005--dynamite speakers, thrilling Sprints, and so on--the most newsworthy event of the week likely will be revelations about IronPython's schedule. When will it be possible to create .NET services in Python? Keep in mind that PythonNet already lets Python applications be .NET clients: http://www.zope.org/Members/Brian/PythonNet/index_html http://python.org/pycon/2005/keynotes.html Brett C. begins his farewell tour from python-dev summation: http://groups-beta.google.com/group/comp.lang.python/msg/99e13efba90ca590 Python has a Security Response Team, python-dev has new summarizers, CPython might soon have a new throwaway list optimization, and those only hint at the range of progress python-dev has made in the last fortnight: http://www.python.org/dev/summary/2005-02-01_2005-02-14.html Skip Montanaro and Diez Roggisch write with precision on use of urllib, and particularly its user-agent refinement: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/535ada773d6f6227/ Python is a good extension language, in the sense that an application or parts of it can be made scriptable under the control of an end-user. It's easy to do so--but be careful to promote safe plugging: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/620954f7d9767af6/ Jeff Epler exhibits a definition which automates remote control of Tkinter processes: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/2ac9a3f8309d183a/ ChaosKCW offers timings and brief commentary on alternative wrappings of SQL access with iterables and generators: http://groups-beta.google.com/group/comp.lang.python/msg/7ff516d7d9387dad Python is flexible. You can create applications, you can work interactively, you can interactively manage applications, you can create applications that offer interaction under programmatic control, you can ...: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/76826e3be040d63d/ One of the fundamentals of Python's origin was that the language play well with others (an innovation, in that context). Among the many instances of teamwork between Python and other languages that turn up daily is Python's success in development of assemblers: http://groups-beta.google.com/group/comp.lang.python.announce/browse_thread/thread/ce3329a8e408c202/ Everything Python-related you want is probably one or two clicks away in these pages: Python.org's Python Language Website is the traditional center of Pythonia http://www.python.org Notice especially the master FAQ http://www.python.org/doc/FAQ.html PythonWare complements the digest you're reading with the marvelous daily python url http://www.pythonware.com/daily Mygale is a news-gathering webcrawler that specializes in (new) World-Wide Web articles related to Python. http://www.awaretek.com/nowak/mygale.html While cosmetically similar, Mygale and the Daily Python-URL are utterly different in their technologies and generally in their results. For far, FAR more Python reading than any one mind should absorb, much of it quite interesting, several pages index much of the universe of Pybloggers. http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog http://www.planetpython.org/ http://mechanicalcat.net/pyblagg.html comp.lang.python.announce announces new Python software. Be sure to scan this newsgroup weekly. http://groups.google.com/groups?oi=djqas_ugroup=comp.lang.python.announce Brett Cannon continues the marvelous tradition established by Andrew Kuchling and Michael Hudson of intelligently summarizing action on the python-dev mailing list once every other week. http://www.python.org/dev/summary/ The Python Package Index catalogues packages. http://www.python.org/pypi/ The somewhat older Vaults of Parnassus ambitiously collects references to all sorts of Python resources. http://www.vex.net/~x/parnassus/ Much of Python's real work takes place on Special-Interest Group mailing lists http://www.python.org/sigs/ The Python Business Forum further[s] the interests of companies
Re: select random entry from dictionary
[EMAIL PROTECTED] wrote: From the Python 2.4 quickreference: d.popitem() Removes and returns an arbitrary (key, value) pair from d If this isn't random enough, then you can generate a random number in range(len(d)) Although this idea may suit the OP, arbitrary is most definitely not random. Given the same dictionary on two separate occasions, this approach results in precisely the same sequence of items being returned. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: parameter name conflict. How to solve?
Delaney, Timothy C (Timothy) wrote: Is this a style guide thing? Why not just: def func(output_param=''): output(output=output_param) This is exactly the problem. There are a bunch of other functions that use output='' parameter. Changing parameter name for this single function may cause confusion. Bo -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Hi to everyone who has repsonded. I'll try to clarify my problem in more detail.
I believe I have the answers how to assign to self. in superclasses. In case
you would know of yet another way, let me know. ;)
Steve Holden wrote:
Martin MOKREJ wrote:
Diez B. Roggisch wrote:
See my post on Mar 2 about automating assignment of class variables.
I got no answers, maybe I wasn't clear enough ... :(
class Foo:
def __init__(self, a, b, .):
self.a = a
self.b = b
If that is what you want, then this might help you: Put all the
values in a
The data passed to an instance come from sql tables. I have the idea
every table will be represented by an object. At the most upper level
of abstraction, I work with, partly overlapping set of tables.
imagine two objects, X and Y. X refers to table T1, T2, T3 while
Y refers to T1, T3, T4, T5.
let's say:
T1 has columns T1C1, T1C2, T1C3
T2 has columns T2C1, T2C2, T2C3, ...
and so on
object t1 is something like:
class t1:
def __init__(self, T1C1, T1C2, T1C3=None):
self.T1C1 = T1C1
self.T1C2 = T1C2
self.T1C3 = T1C3
similarly in case of t2 or any other table. The column names/types are
different,
also requirements for non-NULL values differ (T1C3 above is allowed to be
empty).
T1C2 is ENUM type, for example which must be equal ether to a or b or d
... etc.
object X is something like:
class x:
def __init__(self, t1object, t2object, t3object):
self.t1object = t1object
self.t2object = t2object
self.t3object = t3object
self.xml_root = cElementTree.Element(xml root)
# and now the boring stuff comes
self.xml_t1 = cElementTree.SubElement(self.xml_root, table 1)
self.xml_t1_T1C1 = cElementTree.SubElement(self.xml_T1C1, name of T1C1
comlumn)
self.xml_t1_T1C1.text = self.t1object.T1C1
self.xml_t1_T1C2 = cElementTree.SubElement(self.xml_T1C2, name of T1C2
comlumn)
self.xml_t1_T1C2.text = self.t1object.T1C2
# ... and more or less the same for tables t2 and t3
def set_more_data_from_optional_tables(self, t6object, t7object):
# I'd do (self, anyobject) on the line above, but the objects represent
different
# sql tables, so different variable names apply. I believe the best I
could do
# is to walk their __dict__ so I could assign the data under
self.xml_root ...
# can any of teh XML: libraries represent an object in XML?
self.xml_t6_T6C1 = cElementTree.SubElement(self.xml_T6C1, name of T6C1
comlumn)
self.xml_t6_T6C1.text = self.t6object.T1C1
self.xml_t6_T6C2 = cElementTree.SubElement(self.xml_T6C2, name of T6C2
comlumn)
self.xml_t6_T6C2.text = self.t6object.T1C2
# ... and more or less the same for tables t7
class y:
def __init__(self, t1object, t3object, t4object, t5object=None):
self.t1object = t1object
self.t3object = t3object
self.t4object = t4object
if t5object:
self.t5object = t5object
self.xml_root = cElementTree.Element(xml root)
# now the code from x.__init__() to table t1 and t3 would be cutpasted,
#or now I can say any of the two or three approaches suggested in
this
#thread will be used
Good guess! ;)
dictionary - like this:
my_vals = {a: 1, b : 2, }
There are plenty of other ways to create such a dictionary, but I won't
digress on that here.
Now in your class, you pass than dict to your constructor and then
simply
update the instance's __dict__ so that the keys-value-pairs in my_vals
become attributes:
class Foo:
def __init__(self, my_vals):
self.__dict__.update(my_vals)
foo = Foo(my_vals)
print foo.a
- 1
Hope this helps,
Sure. Thanks! Would you prefer exactly for this method over the method
posted by Kent Johnson
few minutes ago?
Am I so deperately fighting the language? No-one here on the list
needs to set hundreds
variables at once somewhere in their code? I still don't get why:
Well, consider that you haven't actually made any kind of a case for
using variables!
OK, imagine I want to read the data from sql into memory and check the
values (there're some conditions they have to fullfill). Therefore, once
I get the classes defined, I'll implement methods to check every table
t1 to tx for it's contents. ^H^H^H^H^H^H^H^H^H^H^H^H Actually, the checks
have to be based on X or Y instance. The check differs between X.t1
and Y.t1. :(
If you ask me why do I have such a mess, my answer is that I don't want
to store same datatype into two different tables. So the location is only
one, but the value has to be filled in only when X and is unused when Y.
Similarly it happens when some foreign keys are/aren't defined.
If the names of these things are dynamic then why would you want to put
them in an object's namespace, when you could just as easily include
self.insDict = {}
in your __init__() method and then simply update self.insDict whenever
you want.
If you set
Re: parameter name conflict. How to solve?
Kent Johnson wrote: Bo Peng wrote: def func(output=''): output(output=output) Naturally, I get 'str' object is not callable. Is there a way to tell func that the first output is actually a function? (like in C++, ::output(output) ) You could use a default argument: def func(output='', output_fn=output): output_fn(output=output) Kent Thank everyone for the quick responses. All methods work in general. Since func() has to take the same parameter set as some other functins, I can not use func(output='', output_fn=output). output_alias=output etc are fine. Bo -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Martin MOKREJ wrote: The data passed to an instance come from sql tables. I have the idea every table will be represented by an object. Have you looked at SQLObject? I've never used it, but it does seem like this is the sort of thing it was designed for: http://sqlobject.org/ STeVe -- http://mail.python.org/mailman/listinfo/python-list
Re: parameter name conflict. How to solve?
Bo Peng wrote: Thank everyone for the quick responses. All methods work in general. Since func() has to take the same parameter set as some other functins, I can not use func(output='', output_fn=output). output_alias=output etc are fine. One suggestion that I haven't seen so far: Where does this mysteriously named function 'output' come from? If it is defined in another module, then simply call it qualified by the module name. i.e. if the code looks like: from othermodule import output def func(output=''): output(output=output) change it to: import othermodule def func(output=''): othermodule.output(output=output) -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing files installed with distutils
Steve Holden [EMAIL PROTECTED] writes:
[EMAIL PROTECTED] wrote:
I was wondering how to do this too. I'm trying to write a distutils
setup.py script that has some data I'd like to include. From the
distutils docs I get
data_files specifies a sequence of (directory, files) pairs in the
following way:
setup(...
data_files=[('bitmaps', ['bm/b1.gif', 'bm/b2.gif']),
('config', ['cfg/data.cfg']),
('/etc/init.d', ['init-script'])]
)
I can use sys.prefix to find the top level where python is installed,
but this doesn't tell me specifically where site-packages is. On my
Linux box it is in
{sys.prefix}/lib/python2.3/site-packages
but on Windows, it's in
{sys.prefix}/Lib/site-packages.
Do I need to use sys.platform (along with sys.version) to check what
type of machine I'm on, or is there some better method to get the
location of site-packages?
This is one of the areas where distutils could probably do with some
improvement. I don;t know whether it's on any developers priority
list, though.
There are some functions in distutils.sysconfig which may help.
Thomas
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Re: Unicode BOM marks
Martin v. Lwis [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Francis Girard wrote: Well, no text files can't be concatenated ! Sooner or later, someone will use cat on the text files your application did generate. That will be a lot of fun for the new unicode aware super-cat. Well, no. For example, Python source code is not typically concatenated, nor is source code in any other language. The same holds for XML files: concatenating two XML documents (using cat) gives an ill-formed document - whether the files start with an UTF-8 signature or not. And if you're talking HTML and XML, the situation is even worse, since the application absolutely needs to be aware of the signature. HTML might have a meta ... directive close to the front to tell you what the encoding is supposed to be, and then again, it might not. You should be able to depend on the first character being a , but you might not be able to. FitNesse, for example, sends FIT a file that consists of the HTML between the body and /body tags, and nothing else. This situation makes character set detection in PyFit, um, interesting. (Fortunately, I have other ways of dealing with FitNesse, but it's still an issue for batch use.) As for the super-cat: there is actually no problem with putting U+FFFE in the middle of some document - applications are supposed to filter it out. The precise processing instructions in the Unicode standard vary from Unicode version to Unicode version, but essentially, you are supposed to ignore the BOM if you see it. It would be useful for super-cat to filter all but the first one, however. John Roth Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Martin MOKREJ wrote: Am I so deperately fighting the language? No-one here on the list needs to set hundreds variables at once somewhere in their code? Nobody needs to do that. As others have pointed out, creating variables implies wanting to access them distinctly, not as a whole group. If you are just going to access them as a group, use contain objects such as lists or dicts or a custom class, not individual variables. Now have to figure out how to assign them easily into the XML tree. This might be the hint that others were hoping for, about your real requirements. Do you mean to say that the whole reason you have for assigning hundreds of variables is to go and shove the values right back into another data structure such as an XML document? If so, trust us, you very likely don't want to do it by assigning and then referencing hundreds of variables. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for way to include many times some .py code from anotherpython code
Peter Hansen wrote: Martin MOKREJ wrote: Am I so deperately fighting the language? No-one here on the list needs to set hundreds variables at once somewhere in their code? Nobody needs to do that. As others have pointed out, creating variables implies wanting to access them distinctly, not as a whole group. If you are just going to access them as a group, use contain objects such as lists or dicts or a custom class, not individual variables. I understand, but this is unfortunately not my case now. It's really about assigning data from mysql to some variables and getting them later checked. The checks will be different for most variables and will even differ if I read from sql or alternatively I instantiate first new data obtained from web interface and write subsequently into sql (for example, all row ID's won't be known while instantiating the objects). Now have to figure out how to assign them easily into the XML tree. This might be the hint that others were hoping for, about your real requirements. Do you mean to say that the whole reason you have for assigning hundreds of variables is to go and shove the values right back into another data structure such as an XML document? If so, trust us, you very likely don't No, the xml is another reason why I wanted to walk over the __dict__ of some object and let something magically constrcut the XML tree for me. But this is really another, distinct problem from teh one I posted originally. want to do it by assigning and then referencing hundreds of variables. I need to test almost every for it's content. Some tests are just that the value is non-empty (few cases), but in most cases a lot more checks (only certain values allowed, or only int type allowed, or only \w is allowed ...). FYI: The program/database runs at the moment under php + mysql. -- http://mail.python.org/mailman/listinfo/python-list
Re: capturing text from a GUI window
Earl Eiland wrote: Anyone know how to capture text from GUI output? I need to process information returned via a GUI window. It might help (at least in terms of justifying this as an on-topic post) to describe in what way this is a Python question. Is it a Python program that produces the output? Do you want to write this capture program using Python? Also, as always, providing some detail about the platform in question is important if you don't want to see answers of the form we're not mindreaders. Operating system, GUI framework, versions of things. Finally, note that the process is, when possible at all, generally highly platform-specific, awkward, and usually relies on third-party packages (at least in Windows) that may or may not have any Python-specific interfaces available. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: quick question
Simon Brunning wrote:
On Mon, 7 Mar 2005 18:58:20 -0500, Leeds, Mark [EMAIL PROTECTED] wrote:
I want to get rid of the beginning
And ending quotes.
my_string = '8023 '
my_string.strip('')
'8023 '
Note the risk in this approach, as it blindly
removes any number of leading and trailing quotation marks,
not just the first and last ones.
-Peter
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Re: Speeding up CGIHTTPServer (Tim Roberts)
Starting a process on WIN98 is VERY slow. (On NT much faster the second time). If you really want to use WIN98, modify CGIHTTPServer.py in such a way, that branch #Other O.S. -- execute script in this process is executed. This way CGIHTTPServer is as fast as it gets. At least not slower then ISAPI in JScript or VBScript and faster then Apache cgi. If you need the modified module, I can send you one for 2.3. -- http://mail.python.org/mailman/listinfo/python-list
cgi.py bug
While debugging a problem I was having I found a bug in the cgi.py module.
When the environment does not have a correctly set REQUEST_METHOD cgi.py
prompts
for key=value pairs by reading from sys.stdin. After the values are read
from
sys.stdin they are never stored in the FieldStorage.list attribute like they
are
when the FieldStorage.read_urlencoded or FieldStorage.read_multi methods are
called.
This causes a problem when FieldStorage.keys() is called because although
the values
were read from sys.stdin they were never stored in FieldStorage.list.
Although you could argue that REQUEST_METHOD should have been set correctly
in the
first place, it still seems like if cgi.py is going to handle that situation
by
actually reading the values from sys.stdin it should store them too.
It appears that this can fixed by modifying the read_single method of
FieldStorage to store
the lines read from sys.stdin just like the other two methods do.
Here is the fix that I proposed that seems to address the problem.
def read_single(self):
Internal: read an atomic part.
if self.length = 0:
self.read_binary()
self.skip_lines()
else:
self.read_lines()
self.file.seek(0)
# Joe's fix
lines = ''.join([line.rstrip('\n') for line in
self.file.readlines()])
self.file.seek(0)
self.list = list = []
for key, value in parse_qsl(lines, self.keep_blank_values,
self.strict_parsing):
list.append(MiniFieldStorage(key, value))
# End of Joe's fix
I have tested the fix using a few different combinations and also with an
immediate EOF and it seems to work in
all cases that I have test.
The bug has been reported on Sourceforge and I submitted the above patch.
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Re: python -i (interactive environment)
Isn't this a bug? Here's the test program: import code def test_func(): lv = 1 print '\n\nBEFORE lv: %s\n' % (lv) code.interact(local=locals()) print '\n\nAFTER lv: %s\n' % (lv) return test_func() gv = 1 print '\n\nBEFORE gv: %s\n' % (gv) code.interact(local=locals()) print '\n\nAFTER gv: %s\n' % (gv) Here's the output and interactive session: BEFORE lv: 1 Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. (InteractiveConsole) lv = 2 print lv 2 ^Z AFTER lv: 1 BEFORE gv: 1 Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. (InteractiveConsole) gv = 2 print gv 2 ^Z AFTER gv: 2 In the case of code.interact being called inside the function, the locals were available to the interactive environment but changes did not stick when you returned back the function. (started as lv=1 changed to lv=2 in interactive session, back to lv=1 in function) Since you are still in the function and since code.interact used the same local environment why didn't the change stick until testfunc ended? When code.interact was called from the outside the function (globals() == locals()) the changes stuck. (started as gv=1, changed to gv=2 in interactive session, stuck as gv=2 back in main). Steve Holden [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Michael Hoffman wrote: Joe wrote: I want the script to decide whether to fall back to the interactive prompt. You solution makes it ALWAYS fall back to the interactive prompt. Actually, using sys.exit() means the program can exit even if python -i is used. You can use: import code code.interact() which emulates the interactive prompt. Unfortunately it does so in an entirely new namespace, thereby losing the advantage of -i - namely, that you can investigate the program's namespace after it's terminated. regards Steve -- http://mail.python.org/mailman/listinfo/python-list
Python 2.4 OSX Package
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi there, I've just finished creating a package for Python 2.4 for users who don't want to install it from sources under Mac OS X Panther. The same has been tested and it's working perfectly for me. The package is available in the .pkg format and it's compressed using Stuffit Expander (.sitx); both the Installer and Stuffit already come with OSX so no addicional applications are needed to install it. Download location: http://student.dei.uc.pt/~dfcruz/osxpkgs/ - -- Best Regards, Daniel Alexandre ( [EMAIL PROTECTED] ) PGP Public Key: http://student.dei.uc.pt/~dfcruz/pubring.html -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.4 (Darwin) iD8DBQFCLdUlL3+DjgQV3LgRAlxjAJ4qdA97J2pf4qUkFe1LAS1dOywNMgCbBi9p VIR3Mv3UKnWemXhait2GFXA= =WxzN -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-list
Re: python -i (interactive environment)
Joe wrote: Isn't this a bug? Here's the test program: import code def test_func(): lv = 1 print '\n\nBEFORE lv: %s\n' % (lv) code.interact(local=locals()) print '\n\nAFTER lv: %s\n' % (lv) return Check the documentation for locals() [1]: Update and return a dictionary representing the current local symbol table. Warning: The contents of this dictionary should not be modified; changes may not affect the values of local variables used by the interpreter. So if you change things in the dictionary returned by locals() you won't actually change the local variables. STeVe [1] http://docs.python.org/lib/built-in-funcs.html#l2h-45 -- http://mail.python.org/mailman/listinfo/python-list
Format strings that contain '%'
I'm trying to do something along the lines of
print '%temp %d' % 1
Traceback (most recent call last):
File stdin, line 1, in ?
ValueError: unsupported format character 't' (0x74) at index 1
although, obviously I can't do this, since python thinks that the '%t'
is a format string.
I've tried obvious permutations like
print '\%temp %d' % 1
which also doesn't work.
For (template) reasons, I can't do
print '%s %d' % ('%temp',1)
Will anything else work here?
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Re: Format strings that contain '%'
[EMAIL PROTECTED] wrote: I'm trying to do something along the lines of print '%temp %d' % 1 Traceback (most recent call last): File stdin, line 1, in ? ValueError: unsupported format character 't' (0x74) at index 1 Use %%: '%%temp %d' % 1 '%temp 1' -- Erik Max Francis [EMAIL PROTECTED] http://www.alcyone.com/max/ San Jose, CA, USA 37 20 N 121 53 W AIM erikmaxfrancis A wise man never loses anything if he have himself. -- Montaigne -- http://mail.python.org/mailman/listinfo/python-list
Re: python -i (interactive environment)
Steve, Thanks, I knew about that but my question is why is it not working consistently? Joe Steven Bethard [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Joe wrote: Isn't this a bug? Here's the test program: import code def test_func(): lv = 1 print '\n\nBEFORE lv: %s\n' % (lv) code.interact(local=locals()) print '\n\nAFTER lv: %s\n' % (lv) return Check the documentation for locals() [1]: Update and return a dictionary representing the current local symbol table. Warning: The contents of this dictionary should not be modified; changes may not affect the values of local variables used by the interpreter. So if you change things in the dictionary returned by locals() you won't actually change the local variables. STeVe [1] http://docs.python.org/lib/built-in-funcs.html#l2h-45 -- http://mail.python.org/mailman/listinfo/python-list
Re: Format strings that contain '%'
Will anything else work here? Use %% print %%s %s % foo -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
distutils: binary distribution?
Hello, I would like the distutils are creating a binary distribution only - means create the distribution file with *.pyc files WITHOUT the *.py files. Any ideas? Or are the distutils the wrong tool for that? setup.py bdist creates binary dist, but includes the sourcecode cheers Stefan -- Was heute Zeit heißt, ist ein technologisches Konzept, das asynchron zu den Rhythmen des Lebens läuft. -- http://mail.python.org/mailman/listinfo/python-list
Re: Format strings that contain '%'
Thanks!! -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting dictionary by 'sub' value
Thank you all very much for your help. I did the following and it works: imgs=v.keys() imgs.sort(lambda a,b: cmp( time.strptime(str(v[a][9]['date']), '%Y:%m:%d %H:%M:%S'), time.strptime(str(v[b][9]['date']), '%Y:%m:%d %H:%M:%S')) ) for i in imgs: ... Regards, Rory On 08/03/05, Diez B. Roggisch ([EMAIL PROTECTED]) wrote: l = v.items() l.sort(lambda a, b: cmp(a[9]['date'], b[9]['date']) On 08/03/05, Scott David Daniels ([EMAIL PROTECTED]) wrote: You can't sort dicts - they don't impose an order on either key or value. There are ordered dict implementations out there, but AFAIK the only keep the keys sorted, or maybe the (key,values) in the insertion order. But maybe this helps you: l = v.items() l.sort(lambda a, b: cmp(a[9]['date'], b[9]['date']) In 2.4, this is simple: ordered_keys = sorted(v, key=lambda name: v[name][9]['date']) In 2.3, or earlier, use decorate-sort-undecorate: decorated = [(value[9]['date'], key) for key, value in v.iteritems()] decorated.sort() result = [key for key, date in decorated] On 08/03/05, Batista, Facundo ([EMAIL PROTECTED]) wrote: temp_list = [ (x[1][1], x[0]) for x in d.items() ] ... temp_list.sort() for (tmp, key) in temp_list: -- Rory Campbell-Lange [EMAIL PROTECTED] www.campbell-lange.net -- http://mail.python.org/mailman/listinfo/python-list
Re: python -i (interactive environment)
Joe wrote: Thanks, I knew about that but my question is why is it not working consistently? At the module level, locals() is globals(): py locals() is globals() True And the globals() dict is modifiable. HTH, STeVe -- http://mail.python.org/mailman/listinfo/python-list
Re: python -i (interactive environment)
Thanks I thought that was also true for globals() but I now see that it is not. Steven Bethard [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Joe wrote: Thanks, I knew about that but my question is why is it not working consistently? At the module level, locals() is globals(): py locals() is globals() True And the globals() dict is modifiable. HTH, STeVe -- http://mail.python.org/mailman/listinfo/python-list
Re: How to script DOS app that doesn't use stdout
On Sun, 06 Mar 2005 13:41:57 GMT, Gregor [EMAIL PROTECTED] wrote: There's a DOS console application I am trying to script (in Python), but it doesn't seem to use stdout or stderr... For example, if I redirect output to a file (cmd file.txt), the output still appears on screen. Similarly, the output pipes returned by popen* don't catch the app's output. How might this app be generating its output? Any thoughts on how it could be captured (perhaps with something in the win32 extensions)? Thanks, Greg. I've had to do this a couple of times but never in recent years. I don't know your exact needs, but the best tool I ever found for this sort of job was called Phantom of the Keyboard. I ran into a couple of apps that I needed data out of and couldn't get it. They'd only output to screen, never to disk. I used Phantom to automate the app to dump data to screen and then capture the screen to disk. -- Stand Fast, tjg. -- http://mail.python.org/mailman/listinfo/python-list
Re: Mysterious Attribute Errors when GUI Programming
Coral Snake [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... -- Tkinter: from Tkinter import * root = Tk() This creates the application's main window. The Tk() command is not some kind of initialization routine, but actually returns a ready to use toplevel widget. win = Toplevel(root) This creates a child window with the parent root; win.pack() here you try to put the child window into the main window; this cannot work, because a Tk() or Toplevel() window cannot contain other Toplevel() instances. Toplevel() is used for things like dialogs. If you need a separate container widget inside root use Frame() instead. Label(win, text= Hello, Python World).pack(side=TOP) Button(win, text= Close, command=win.quit).pack(side=RIGHT) win.mainloop() - AttributeError: Toplevel instance has no attribute 'pack' - The correct usage of what you tried looks like this: from Tkinter import * root = Tk() Label(win, text= Hello, Python World).pack(side=TOP) Button(win, text= Close, command=win.quit).pack(side=RIGHT) root.mainloop() I hope this helps Michael -- http://mail.python.org/mailman/listinfo/python-list
Python Presentation
Rod, This is to confirm the telephone message I left yesterday. The Introduction to Python is scheduled for 8.0pm this evening at the Fulford Academy, 280 King Street East. Colin W. -- http://mail.python.org/mailman/listinfo/python-list
MDaemon Warning - virus found: Returned mail: see transcript for details
*** WARNING ** Este mensaje ha sido analizado por MDaemon AntiVirus y ha encontrado un fichero anexo(s) infectado(s). Por favor revise el reporte de abajo. AttachmentVirus name Action taken -- text.zip Email-Worm.Win32.Mydoom.m Removed ** This message was undeliverable due to the following reason(s): Your message was not delivered because the destination computer was unreachable within the allowed queue period. The amount of time a message is queued before it is returned depends on local configura- tion parameters. Most likely there is a network problem that prevented delivery, but it is also possible that the computer is turned off, or does not have a mail system running right now. Your message was not delivered within 6 days: Mail server 3.202.169.132 is not responding. The following recipients could not receive this message: python-list@python.org Please reply to [EMAIL PROTECTED] if you feel this message to be in error. -- http://mail.python.org/mailman/listinfo/python-list
