[ANN] Pydev and Pydev Extensions 1.0.2 release
Hi All, Pydev and Pydev Extensions 1.0.2 have been released Check http://www.fabioz.com/pydev for details on Pydev Extensions and http://pydev.sf.net has for details on Pydev Highlights in Pydev Extensions: --- - New feature in the debugger: the console is available for probing when in 'suspendend mode' - New feature in code analysis: Provided a way to consider tokens that should be in the globals - Halt fix when too many matches where found in the go to definition. - Code analysis minor bugs fixed. - Error when opening browser fixed. Highlights in Pydev: --- - Jython debugging now working. - Code coverage does not report docstrings as not being executed. - Freeze when making a 'step-in' fixed in the debugger. - Grammar generated with javacc version 4.0 Cheers, Fabio -- Fabio Zadrozny -- Software Developer ESSS - Engineering Simulation and Scientific Software www.esss.com.br Pydev Extensions http://www.fabioz.com/pydev PyDev - Python Development Enviroment for Eclipse http://pydev.sf.net http://pydev.blogspot.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Dejavu 1.4.0 (Python ORM) release
Title: Dejavu 1.4.0 (Python ORM) release Dejavu 1.4.0 http://projects.amor.org/dejavu/ I'm extremely pleased to announce the release of Dejavu 1.4.0, a pure-Python Object-Relational Mapping library. Dejavu allows you to create, query, and manage persistent data using your existing knowledge of Python programming. Features * Data queries are expressed using pure Python; no SQL, no operator hacks, and no need to wrap code in strings. * Data may be transparently stored in PostgreSQL, MySQL, SQLite, Access, or SQL Server databases, as well as in flat files (using shelve), and caching proxies. You can create and combine custom storage systems for your own integration and performance needs. * Easy associations between Unit classes. * Full thread-safety for reliable use in web applications and other concurrent environments. * Views, sorting, cross-tabs, and other analysis tools. * Unit Collections, plus Engines and Rules to form powerful end-user query and reporting interfaces. What's new in 1.4 - * Full LEFT, RIGHT, and INNER JOIN support. * Optimized and introspectable To-One and To-Many associations. * Arbitrary names for Unit.ID's (primary keys). * Support for multiple ID's (primary keys). * A new Schema class and other upgrade-management tools. * Default values for UnitProperties. * New logging hooks to help debug SQL and other storage issues. * Fixes to support Python 2.4 bytecode and other changes. * Inheritance support (all subclasses are recalled). * Vastly-improved test suite. * New recur module included, with a threaded Worker class. * Better support for update triggers. Dejavu is in the Public Domain, and you may use it anywhere with no obligation whatsoever. User documentation and a full Trac site are available at: http://projects.amor.org/dejavu/ Robert Brewer System Architect Amor Ministries [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: Python Enthought Edition Version 0.9.2 Released
Enthought is pleased to announce the release of Python Enthought Edition Version 0.9.2 (http://code.enthought.com/enthon/) -- a python distribution for Windows. This is a kitchen-sink-included Python distribution including the following packages/tools out of the box: Numeric 24.2 SciPy 0.3.3 IPython 0.6.15 Enthought Tool Suite 1.0.2 wxPython 2.6.1.0 PIL 1.1.4 mingw 20030504-1 f2py 2.45.241_1926 MayaVi 1.5 Scientific Python 2.4.5 VTK 4.4 and many more... 0.9.2 Release Notes Summary --- Version 0.9.2 of Python Enthought Edition is the first to include the Enthought Tool Suite Package (http://code.enthought.com/ets/). Other changes include upgrading to Numeric 24.2, including MayaVi 1.5 (rather than 1.3) and removing a standalone PyCrust package in favor of the one included with wxPython. Also, elementtree and celementtree have been added to the distribution. Notably, this release is still based on Python 2.3.5 and still includes SciPy 0.3.3. You'll also notice that we have changed the version numbering to a major.minor.point format (from a build number format). see full release notes at: http://code.enthought.com/release/changelog-enthon0.9.2.shtml Best, Travis N. Vaught -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: file.read problem
Try opening the file in 'rbU' mode. This will use universal newline mode and convert all carriage returns to line feeds. I tried this, but as you say, now there are 0x0A bytes extra in my files, is there also a possibility to let all these things out, and just get the file. I am working on a script to get parts of raw data out of a file, and the data I read has to be the data written in the file without CR or LF. -- http://mail.python.org/mailman/listinfo/python-list
Re: getting the line just before or after a pattern searched
[EMAIL PROTECTED] wrote: hi i have a file something like this abcdefgh ijklmnopq 12345678 rstuvwxyz . . . 12345678 . whenever i search the file and reach 12345678, how do i get the line just above and below ( or more than 1 line above/below) the pattern 12345678 and save to variables? thanks I would try something similar to the pairwise recipe here : http://www.python.org/doc/2.4.2/lib/itertools-recipes.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Databases and python
About the filename ID - word ID table: Any good database (good with large amounts of data) will handle the memory management for you. If you get enough data, it may make sense to get bothered with PostgreSQL. That has a pretty good record on handling very large sets of data, and intermediate sets as well. Again, I can't speak about BDBs, but something in the back of my head is saying that the entire table is loaded into memory. If so, that's not good for large sets of data. About base255: You can think of strings as numbers. At least, that's how your computer sees them. Converting a number to base255 is really silly. If it's a series of bytes (like a Python string is) then base255 is a string. You want to use an incremented number for the ID because there are some indexes that deal with this kind of data very, very well. If you have your number spread out like a shotgun, with clusters here and there, the index might not be very good. About using many tables: The best answer you are going to get is a bunch of files---one for each word---with the names or IDs of the files. You can store these in a single directory, or (as you'll find out to be more efficient) a tree of directories. But this kind of data is useless for reverse lookups. If you really do have so much data, start using a real database that is designed to handle this kind of data efficiently. The overhead of SQL parsing and network latency soon gets dwarfed by lookup times anyway. -- http://mail.python.org/mailman/listinfo/python-list
Re: file.read problem
Farshid Lashkari wrote:
I am working on a script to get parts of raw data out of a file, and
the data I read has to be the data written in the file without CR or
LF.
So you just want to remove all the linefeeds? This should work then:
data = data.replace('\n','')
-Farshid
The problem is if I remove the linefeeds, I also delete readout data if
it is 0x0A, and I don't want this, because the files I readout has to
be a part of the original data. Another idea??
But still my question is why is the:
f = open('myfile,'r')
a = f.read(5000)
working in linux??
--
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Re: Determing whether two ranges overlap
Robin Haswell wrote: Hey guys I was wondering if you could give me a hand with something. If I have two tuples that define a range, eg: (10, 20), (15, 30), I need to determine whether the ranges overlap each other. def overlap(a,b): return a[0] = b[0] = a[1] or b[0] = a[0] = b[1] -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Merging two lists of data (Pythonic way)
On Thu, 16 Feb 2006 12:30:47 -0800, SMB wrote: I know I could do this with two for loops, but am looking for a better solution maybe involving list comprehension. What's wrong with for loops? Why do you think they are unPythonic? -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: pymssql and date format
[EMAIL PROTECTED] wrote: hi i am using pymmsql to query a date column in MSSQL database table. However the result shows for example (datetime.datetime(2006, 2, 16, 17, 50, 19) which is supposed to be 2006-02-16 17:50:19.000 anyway to correct query a date column using pymssql so that it gives the correct date format? thanks It doesn't return a format, it returns a value. I presume you are saying that you don't like the way the value prints? Use str() on it: str(datetime.datetime(2006, 2, 16, 17, 50, 19)) '2006-02-16 17:50:19' regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about xmlrpc and threading
David Hirschfield wrote: cut My question was whether this is allowed? Can two calls be made via the same ServerProxy instance while a request is already underway? Clearer? -Dave cut Much, and my preliminary answer is, I have no clue :-) But knowing that python will throw an exceptions when something is not allowed and that we can analyze if the logic of the program breaks we do can build a test case! I've taken the opportunity, but I might be as wrong was I am right (and still won't know which one it was): So, I expect that when something un-allowed happens it will throw an exception and otherwise that the workflow on the server should resemble the work flow on the client: So i created an async server with only one function (which is even worse then your question): def doSomething(self,threadID): randomWait= random.randrange(0,10) time.sleep(randomWait) print(Thread %s has slept for %s seconds % threadID,randomWait)) returnValue = Thread %s has slept for %s seconds % (threadID,randomWait) return returnValue and a threaded client: class testThread(threading.Thread): def run(self): xmlrpclib.server = xmlrpclib.ServerProxy(http://localhost:8080;) x=xmlrpclib.server print(x.doSomething(self.getName())) for i in range(100): testThread().start() So when I run that I except that the output on the server is the same as the one on the client with an error margin within the second range (which would indicate that a certain thread has been scheduled a little earlier then the other), guess what the output of the two was? Well I say this much, most of them where in sync (within the error margin) so I conclude that your question is answered with , yes you can have a call when another one is processed without intervening with each other( if you want that). -- mph -- http://mail.python.org/mailman/listinfo/python-list
Re: mod_python and open HTTP connection
Does mod_python time out after a minute ?
No, but the browser may timeout. Sending a periodic bit-o-data on a
long running page is a good idea anyway (so the user knows it is still
working).
If I leave an HTTP connection open so that the content keeps loading inside
the
browser window indefinately, and if I close the browser window, the
mod_python process is terminated, right?
In general this is not an issue. However it depends to some degree on
what your mod_python program is doing. Here is a really, REALLY feeble
example w/publisher:
def ping(req, target_ip):
import commands
output = commands.getoutput('ping -c 1 %s' % target_ip)
return output
Even if the user closes the window or hits 'stop' the process stays
until the ping finishes. In this example this is merely annoying (10k
pings takes almost 3 hours) but if it had been 'fping -el %s' instead
you would be in real trouble (since it would never exit).
Restarting apache clears such zombie processes.
btw, 'ping' as written above is horrible. If a code review turned
_that_ up on production someone would be fired, along with whoever
hired them, whoever ate lunch with them and anyone that waves goodbye.
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Installing python on lynxOS
I'm trying to install python2.4.2 onto lynxOS 4.0.0. with gcc 2.95.3. I was wondering if anyone who has done this before could give me some pointers.I'm currently getting the following error when running make: gcc -o python Module/python.o libpython2.4.a -lsocket -lm called2:ld returned 1 exit status libpython2.4.a(pystate.o):In function 'PyThreadState_New': Python2.4.2/pystate.c:191: undefined reference to '_PyGILState_NoteThreadState' called2:ld returned 1 exit statusI checked pystate.c and the function _PyGILState_NoteThreadState is defined in the file, so I'm a bit lost here.-- Bryce -- http://mail.python.org/mailman/listinfo/python-list
Re: calculating on matrix indices
Brian Blais wrote: Hello, In my attempt to learn python, migrating from matlab, I have the following problem. Here is what I want to do, (with the wrong syntax): from numpy import * t=arange(0,20,.1) x=zeros(len(t),'f') idx=(t5) tau=5 x[idx]=exp(-t[idx]/tau) # ---this line is wrong (gives a TypeError) #-- what is the best way to replace the wrong line with something that works: replace all of the values of x at the indices idx with exp(-t/tau) for values of t at indices idx? I do this all the time in matlab scripts, but I don't know that the pythonic preferred method is. thanks, bb You're specifying the type of x but not of t. You need to change the line where you assign t to: t = arange(0, 20, .1, 'f') I'm not sure why it doesn't figure that own on its own (since it obviously does hold floats), but this does cause it to work. -Kirk McDonald -- http://mail.python.org/mailman/listinfo/python-list
Re: Seaching Active Directory via ADO
To be more clear, something like this example but in python. I have tryed to convert something very simular to this but have failed. -- SCRIPT CONFIGURATION -- strBase= LDAP://BaseDN; strFilter = Filter; strAttrs = AttrList; strScope = Scope ' -- END CONFIGURATION - set objConn = CreateObject(ADODB.Connection) objConn.Provider = ADsDSOObject objConn.Open Active Directory Provider set objComm = CreateObject(ADODB.Command) objComm.ActiveConnection = objConn objComm.Properties(Page Size) = 1000 objComm.CommandText = strBase strFilter strAttrs strScope set objRS = objComm.Execute objRS.MoveFirst while Not objRS.EOF Wscript.Echo objRS.Fields(0).Value objRS.MoveNext wend LittlePython [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I am have trouble finding a simple working example of using ADO to search Active Directory. I am hoping someone could point me to a generic working script that connects to AD and pulls up a recordset to help me get started into the right direction in learning ADO, ADSI on Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: Mac OS X Installation Problem
Matt wrote: Hi Everybody, 1) Does OS X have a thing like the Add/Remove Programs control panel on Windows XP? Nope. You install stuff by running packages (installers) or dragging .app files to Applications, uninstall it normally by dragging them to Trash. My Tiger system had Python v2.3.5 on it and I threw the files in the trash and Very unwise move -- now your fax functionality (which Apple implemented using their own special system build of Python 2.3.5) is unlikely to work, for example. installed v2.4.1, which is working fine as far as I can tell. However, when I type python at the command line, I get command not found so, 2) How do I get OS X to recognize python at the command line? Edit a ~/.bashrc file to add /usr/local/bin to your PATH. Alex -- http://mail.python.org/mailman/listinfo/python-list
file.read problem
f = open('myfile,'r')
a = f.read(5000)
When I do this I get the first 634 bytes. I tried using the:
f = open('myfile,'rb')
option, but now there are a few 0x0D bytes extra in myfile. 0x0D =
Carriage return. How can I make a program that not puts in the 0x0D
bytes in windows.
In linux the first 2 lines are working perfectly.
--
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Re: file.read problem
I am working on a script to get parts of raw data out of a file, and
the data I read has to be the data written in the file without CR or
LF.
So you just want to remove all the linefeeds? This should work then:
data = data.replace('\n','')
-Farshid
--
http://mail.python.org/mailman/listinfo/python-list
Re: define loop statement?
Rene Pijlman wrote: David Isaac: I would like to be able to define a loop statement (nevermind why) so that I can write something like loop 10: do_something instead of for i in range(10): do_something Possible? If so, how? Yes. By implementing a compiler or an interpreter for your programming language. Or a preprocessor that converts your language to Python, or some other suitable intermediate language. Or a programmer, that converts your pseudocode and some coffee to the desired algorithm :-) Or by hacking through the Python source and creating his own somehow pythonish but absolutely not python language -- http://mail.python.org/mailman/listinfo/python-list
SonicWALL Configuration
Is it possible to write a Python script to modify/configure a SonicWALL firewall? Or, has anyone written any useful utilities for the units (i.e. parsing the TSR reports, etc.)? Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: Seaching Active Directory via ADO
It usually means the domain you specified can't be found. Roger LittlePython [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Do you know what this may mean? C:\Documents and Settings\Administrator\Desktop\pytestADOSeach.py Traceback (most recent call last): File C:\Documents and Settings\Administrator\Desktop\pytest\ADOSeach.py, lin e 6, in ? rs,rc=c.Execute( File COMObject ADODB.Connection, line 3, in Execute File C:\Python24\Lib\site-packages\win32com\client\dynamic.py, line 258, in _ApplyTypes_ result = self._oleobj_.InvokeTypes(*(dispid, LCID, wFlags, retType, argTypes ) + args) pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, 'Provider', 'Tabl e does not exist.', None, 1240640, -2147217865), None) C:\Documents and Settings\Administrator\Desktop\pytest Roger Upole [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] You could also accomplish the same thing using the Command object, but this way is usually more concise for plain Sql. Roger LittlePython [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I notice there is no adodb.command. This is not required? Thx for the example! Roger Upole [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Here's a short example that uses ADO to search for a user by wildcard. import win32com.client c = win32com.client.Dispatch(ADODB.Connection) c.Open(Provider=ADSDSOObject) rs,rc=c.Execute( SELECT adspath, title, name From 'LDAP://DC=yourdomain, DC=COM' where objectClass='user' and name='Roger*' ) while not rs.EOF: for f in rs.Fields: print f.Name, f.Value rs.MoveNext() hth Roger LittlePython [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Thanks but I was looking more for ADO com object than ADSI or ldap. For some strange reason it is very hard to locate any working scripts that use ADO to connect and search AD. Is there an issue with ADO and python when connecting to AD? I have try to build one myself with no luck. I think my problem is with adodb.command calls. Thanks for your response. alex23 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Heya, There are a couple of examples on the O'Reilly site. These two are taken from 'Active Directory Cookbook', the first uses a COM object while the second uses a native LDAP module: http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_com.py.tx t http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_ldap.py.t xt This might give you a start. - alex23 == Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News== http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups = East and West-Coast Server Farms - Total Privacy via Encryption = == Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News== http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups = East and West-Coast Server Farms - Total Privacy via Encryption = == Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News== http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups = East and West-Coast Server Farms - Total Privacy via Encryption = -- http://mail.python.org/mailman/listinfo/python-list
Re: Evil, evil wxPython (and a glimmer of hope)
[EMAIL PROTECTED] [EMAIL PROTECTED] writes: I rarely do GUIs, and reminded myself today why that is the case (simply, it's not fun). Programming C++ in Python isn't much fun, true. However, it should be pretty easy to write small wrapper over the wxPython api. [...] wxPython is great as it is (a simple wrapper for a C++ toolkit) and the basic design is ok proven, I'm just too lazy to use it in its current form. Fortunately, you're not alone in that thought. The wxPython project's explicit goal is to make wxPython feel as much like wxWidgets as feasible. For those that want wxPython to feel more like Python than C++, Hans Nowak started the 'wax' wrapper: Simply put, Wax is a GUI toolkit. It sits on top of wxPython, removing some of the low-level aspects of that GUI, and adding some useful abstractions. The goal is that Wax should be easier to use than wxPython, but just as feature-rich. Maybe even more so. The actual situation is different. Frankly, I don't have the time to work on this project very much. That's why I only add new features when I need them. Some of my other projects (Firedrop, Sourcery, etc) use Wax, so over time, when I need more controls, I add them. On the other hand, a subset of controls is there, and is usable. URL:http://zephyrfalcon.org/labs/dope_on_wax.html URL:http://zephyrfalcon.org/labs/wax.html The web content is a bit sparse; fortunately the code has seen more love than the web pages. Wax was the focus of a couple of Google Summer of Code projects, and new life seems to have been gained as a result. -- \ We are not gonna be great; we are not gonna be amazing; we are | `\gonna be *amazingly* amazing! -- Zaphod Beeblebrox, _The | _o__)Hitch-Hiker's Guide To The Galaxy_, Douglas Adams | Ben Finney http://www.benfinney.id.au/ -- http://mail.python.org/mailman/listinfo/python-list
days since epoch
hi how can i get the number of days since epoch using the time module? or do i have to manually do the arithmetic? thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Databases and python
About indexes everywhere: Yes, you don't have to be a DB expert to know that indexes everywhere is bad. But look at this example. There are really two ways that the data is going to get accessed in regular use. Either they are going to ask for all files that have a word (most likely) or they are going to see which words are in a file. I'm going to have to name the tables now, aren't I? Here's a simple schema: words word_id word files -- file_id filename word_files -- file_id word_id If you are going to lookup by word, you'll need an index on words.word. You'll also need an index on word_files.word_id. And then you'll need an index on files.file_id. If you are going to lookup by file, you'll need an index on files.filename, word_files.file_id, and words.word_id. So it ends up in this situation you need indexes everywhere. Now, when you are doing the initial population, you should drop all the indexes you don't need during population. That means everything but words.word has to go. (You'll need to find the word_id for previously seen words.) After the initial population, then is the time to build and add the indexes. it's much faster to build an index when you have the entire set of data in front of you than to do it piece-by-piece. Some indexes actually get built better than they would've piecemeal. Unfortunately this is no longer strictly topical to Python. But if you free your mind from thinking in terms of SQL databases and look at indexes as dicts or whatnot, then you can see that this is really a general programming problem. -- http://mail.python.org/mailman/listinfo/python-list
Re: days since epoch
As suggested by Alex the datetime module makes this easy: py import datetime py epoch = datetime.datetime.utcfromtimestamp(0) py print epoch 1970-01-01 00:00:00 py today = datetime.datetime.today() py d = today - epoch py print d 13196 days, 9:50:44.266200 py print d.days # timedelta object 13196 -- http://mail.python.org/mailman/listinfo/python-list
Re: file.read problem
wscrsurfdude wrote: Try opening the file in 'rbU' mode. This will use universal newline mode and convert all carriage returns to line feeds. I tried this, but as you say, now there are 0x0A bytes extra in my files, is there also a possibility to let all these things out, and just get the file. I am working on a script to get parts of raw data out of a file, and the data I read has to be the data written in the file without CR or LF. what kind of file are you reading? if it's a text file, it's supposed to have LF in it (or CR LF if you read it in binary mode); the LF:s are there to tell you where each line ends. if it's a binary file, open with mode rb. /F -- http://mail.python.org/mailman/listinfo/python-list
restricted mode (2.4.2)
Hey, I work on some project where main part (core) is coded in C (for speed) and the rest is in Python. Python API is used to launch python modules without using any exec() system() calls (thread safe). During debugging I found that many of Python modules fails to work because restricted mode: Traceback (most recent call last): File ../modules/scan/dns_forward.py, line 167, in scan_element d = DNSForward(domainname) File ../modules/scan/dns_forward.py, line 20, in __init__ self.__r = dns.resolver.Resolver() File /usr/lib/python2.4/site-packages/dns/resolver.py, line 270, in __init__ self.read_resolv_conf(filename) File /usr/lib/python2.4/site-packages/dns/resolver.py, line 295, in read_resolv_conf f = open(f, 'r') IOError: file() constructor not accessible in restricted mode Is there any way to avoid this mode ? -- ___ * Wojciech Pawlikowski :: wojtekp AT gmail.com :: GG: 4155781 * * http://www.knockdownhc.com || http://www.kingofthehillhc.com * * Loved by a few, Hated by many, But respected by ALL * -- http://mail.python.org/mailman/listinfo/python-list
Re: embedding python in HTML
Rene Pijlman wrote: John Salerno: [Python alternative for PHP] So to do this with Python, do I simply integrate it into the HTML as above, with no extra steps? You'd need something like the PHP engine, that understands Python rather than PHP. [...] There's also PSP: http://www.ciobriefings.com/psp/ For straight Python Server Pages without advertising various (and possibly quite different) technologies, take a look at mod_python's implementation: http://www.modpython.org/ http://www.modpython.org/live/current/doc-html/pyapi-psp.html I haven't actually used this particular implementation - I'm not a fan of embedding programming languages in HTML - but I imagine that it's one of the more actively developed projects of its kind. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Open Relay Test
D wrote: Nope, quite the contrary..I'm looking to write a simple program for a client of mine that will, among other things, verify that their clients' email servers do not have open relays. I usually test it like this: [EMAIL PROTECTED]:~ telnet mail.huygenslyceum.nl smtp Trying 172.16.64.12... Connected to mail.huygenslyceum.nl. Escape character is '^]'. 220 mail.huygenslyceum.nl ESMTP Sendmail 8.12.11/8.12.11; Fri, 17 Feb 2006 10:03:46 +0100 (CET) ~ helo 172.16.64.1 250 mail.huygenslyceum.nl Hello [172.16.64.1], pleased to meet you ~ mail from: [EMAIL PROTECTED] 250 2.1.0 [EMAIL PROTECTED] Sender ok ~ rcpt to: [EMAIL PROTECTED] 550 5.7.1 [EMAIL PROTECTED] Relaying denied. IP name lookup failed [172.16.64.1] To get a more verbose explanation, google for smtp + telnet. hth -- mph -- http://mail.python.org/mailman/listinfo/python-list
Re: Pulling all n-sized combinations from a list
[EMAIL PROTECTED] wrote:
hi,
I'm not sure why this hasn't come up yet, but this seems to beg for
list comprehensions, if not generator expressions. All of the
following run in under 2 seconds on my old laptop:
alph = 'abcdefghijklmnopqrstuvwxyz'
len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d
in alph])
456976
len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d
in alph
... if (a=b and b=c and c=d)])
23751
len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d
in alph
... if (a!=b and b!=c and c!=d and d!=a and b!=d and a!=c)])
358800
len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d
in alph
... if (ab and bc and cd)])
14950
Well, _I_ was using them in my original program to create the
conditionals, but not for the loops. So if we combine your idea
to use list comprehensions for the loop with my list comprehensions
of the conditionals, we aren't limited to asking for only 4-letter
words.
And it runs faster than my original.
Thanks.
def ooloop6(a, n, perm=True, repl=True):
if (not repl) and (nlen(a)): return
r0 = range(n)
r1 = r0[1:]
if perm and repl: # ok
v = ','.join(['c%s' % i for i in r0])
f = ' '.join(['for c%s in a' % i for i in r0])
e = ''.join([p = [''.join((,v,)) ,f,]])
exec e
return p
if (not perm) and repl:# ok
v = ','.join(['c%s' % i for i in r0])
f = ' '.join(['for c%s in a' % i for i in r0])
i = ' and '.join(['(c%s=c%s)' % (j,j-1) for j in r1])
e = ''.join([p = [''.join((,v,)) ,f, if ,i,]])
exec e
return p
if perm and (not repl):# ok
v = ','.join(['c%s' % i for i in r0])
f = ' '.join(['for c%s in a' % i for i in r0])
i = ' and '.join([' and '.join(['(c%s!=c%s)' % (j,k) for k in
range(j)]) for j in r1])
e = ''.join([p = [''.join((,v,)) ,f, if ,i,]])
exec e
return p
if (not perm) and (not repl): # ok
v = ','.join(['c%s' % i for i in r0])
f = ' '.join(['for c%s in a' % i for i in r0])
i = ' and '.join(['(c%sc%s)' % (j,j-1) for j in r1])
e = ''.join([p = [''.join((,v,)) ,f, if ,i,]])
exec e
return p
p = ooloop6('abcdefghijklmnopqrstuvwxyz',4,True,True)
print
print len(p)
p = ooloop6('abcdefghijklmnopqrstuvwxyz',4,False,True)
print
print len(p)
p = ooloop6('abcdefghijklmnopqrstuvwxyz',4,True,False)
print
print len(p)
p = ooloop6('abcdefghijklmnopqrstuvwxyz',4,False,False)
print
print len(p)
456976
23751
358800
14950
cheers,
Jess
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Re: Determing whether two ranges overlap
Thanks guys, you've all been very helpful :-) -Rob -- http://mail.python.org/mailman/listinfo/python-list
Re: Job advert: Your help needed
Andrew Koenig [EMAIL PROTECTED] writes: Paul Boots [EMAIL PROTECTED] +354 664 1748 Iceland? really?? Gonna go try to get a chess match? ;-) Mike Jittlov likes the place too. I thought of him immediately but AFAIK he doesn't use Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: Seaching Active Directory via ADO
Heya, There are a couple of examples on the O'Reilly site. These two are taken from 'Active Directory Cookbook', the first uses a COM object while the second uses a native LDAP module: http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_com.py.txt http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_ldap.py.txt This might give you a start. - alex23 -- http://mail.python.org/mailman/listinfo/python-list
Re: Pulling all n-sized combinations from a list
hi, I'm not sure why this hasn't come up yet, but this seems to beg for list comprehensions, if not generator expressions. All of the following run in under 2 seconds on my old laptop: alph = 'abcdefghijklmnopqrstuvwxyz' len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d in alph]) 456976 len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d in alph ... if (a=b and b=c and c=d)]) 23751 len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d in alph ... if (a!=b and b!=c and c!=d and d!=a and b!=d and a!=c)]) 358800 len([''.join((a,b,c,d)) for a in alph for b in alph for c in alph for d in alph ... if (ab and bc and cd)]) 14950 cheers, Jess -- http://mail.python.org/mailman/listinfo/python-list
PyProtocols, Components, and Inheritance
I've been discussing PyProtocols with a a friend collaborating with me on a SF game project, about the benefits and design concept of component architecture, and I'm a little confused by what I'm learning. I learned the concepts of component architecture from the Zope project, where if I'm not mistaken, components are essentially python mix-in classes, and you make a class from components by using multiple inheritance and document this with an interface declaration: So in this model, I have (let's say): Interfaces: IVehicle, IAnimal these are special (non-class) objects, even though their declarations look like class declarations Components: Vehicle, Animal (each provide these interfaces) these are just ordinary python classes Then I can make a class by combining components: class Horse(Animal, Vehicle): implements(IAnimal, IVehicle) pass (This is an interactive fiction engine, so it would be reasonable to think of a horse both as an animal and as a means of transportation -- but it's just an example). However, this is apparently not how PyProtocols works. The PP way apparently looks something like this: Components: are special (non-class?) objects (just like interfaces?) So I need something like: class Vehicle(Component): #... implementation snipped pass class Animal(Component): #... implementation snipped pass then I use it by making a class: class Horse(object): pass and only then do I attach components: Horse.addComponent(Vehicle) Horse.addComponent(Animal) To me, this looks like madness. Aren't we just reinventing multiple inheritance with obtuse syntax? Why is multiple inheritance such a bad thing? (I can see that it can be abused, but ISTM that real trouble comes not from broad, shallow multiple inheritance as in the component model, but from deep inheritance chains (as one is forced to do in single-inheritance languages)). Anyway, my question is WHY? I know PyProtocols is fairly popular, so there must be some benefit to this, but I'd really like to hear what it's supposed to be. My friend seems to think there is a great evil in doing it with multiple inheritance, yet the PyProtocols way seems to be kind of complex. I had erroneously assumed that PyProtocols and Zope component models were more-or-less equivalent, with PP being perhaps a bit more complete (for example, PP's interface module is apparently a superset of Zope's). I realize that at some level we're just having a cultural conflict since we learned different versions of this concept, but I would like to make a real attempt to understand where he's coming from. (And yes, of course I've asked him, but since he only knows the PP way of doing this, I don't think he's able to tell me -- I guess we need an interpreter. ;-) ). I feel like there's something going on here that I just don't get. Is there someone out there who can give me a PyProtocols advocate's PoV on this? Can you tell me why PP's approach is better than Zope's? (Or perhaps what you think it is more appropriate for?). Anyway, c.l.python seemed like the (neutral) place to ask since this is comparing two major python packages. Cheers, Terry -- Terry Hancock ([EMAIL PROTECTED]) Anansi Spaceworks http://www.AnansiSpaceworks.com -- http://mail.python.org/mailman/listinfo/python-list
Re: embedding python in HTML
John Salerno wrote: bruno at modulix wrote: You've got to understand that Python is *not* a 'ServerPage' language (- php, asp, jsp etc) in itself. Your server can now run python, fine, but *how* ? CGI ? FastCGI ? mod_python ? other ? (hint: it's probably just plain old CGI...) So does that mean I need to have something further on the server? Or is this something I can do on my end? How do I find out what I need? If you really want to use Python as a server page language, mod_python has support for Python Server Pages via its PSP handler: Python Server Pages: http://modpython.org/live/current/doc-html/pyapi-psp.html PSP handler: http://modpython.org/live/current/doc-html/hand-psp.html This of course means your server needs to have mod_python installed and configured. (Consult your server administrator.) However, I've always found PSP to be somewhat fiddly, and mixing any serious code with the HTML text is hardly pretty. A more common (and bare-metal) approach is CGI. In CGI, a request for a page runs a script, the output of which is the HTML page. I think this only requires that the server has Python installed, which you have said is the case. Python has signifigant standard library support for writing CGI. You should examine Python's standard cgi module: http://python.org/doc/2.4.2/lib/module-cgi.html That page also has some nice examples to get you started. And maybe its Cookie module, if you ever feel like messing with cookies: http://python.org/doc/2.4.2/lib/module-Cookie.html Slightly less bare-metal is using mod_python directly (rather than via its PSP module). This is probably preferable to plain CGI if mod_python is available, as it caches scripts as long as they are not changed. This is faster than reading them off the disk every time. By and large, mod_python's API replaces (or at least wraps) the standard library's CGI support if you go this route. Again, this is only available if your server has mod_python installed, which may or may not be the case. -- http://mail.python.org/mailman/listinfo/python-list
Re: Job advert: Your help needed
Paul Boots [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Paul Boots [EMAIL PROTECTED] +354 664 1748 Iceland? really?? -- http://mail.python.org/mailman/listinfo/python-list
define loop statement?
I would like to be able to define a loop statement (nevermind why) so that I can write something like loop 10: do_something instead of for i in range(10): do_something Possible? If so, how? Thanks, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: file.read problem
if it's a binary file, open with mode rb.
You are right about opening it in the rb mode (flaw in the start post),
but also when I do this in windows in front of every 0x0A is put a
0x0D. I found a explanation why it is working in linux it is below in
my post.
But what i get of this that in windows in front of every 0x0A is put a
0x0D as a line feed. II have to get rid of these. But if there is
already binary data in my original file with the data 0x0D0A the 0x0D
also is deleted, someone has an idea??
The whole subject of newlines and text files is a murky area of non
standard implementation by different operating systems. These
differences have their roots in the early days of data communications
and the control of mechanical teleprinters. Basically there are 3
different ways to indicate a new line:
Carriage Return (CR) character ('\r')
Line Feed (LF) character ('\n')
CR/LF pair ('\r\n').
All three techniques are used in different operating systems. MS DOS
(and therefore Windows) uses method 3. Unix (including Linux) uses
method 2. Apple in its original MacOS used method 1, but now uses
method 2 since MacOS X is really a variant of Unix.
So how can the poor programmer cope with this multiplicity of line
endings? In many languages she just has to do lots of tests and take
different action per OS. In more modern languages, including Python,
the language provides facilities for dealing with the mess for you. In
the case of Python the assistance comes in the form of the os module
which defines a variable called linesep which is set to whatever the
newline character is on the current operating system. This makes adding
newlines easy, and rstrip() takes account of the OS when it does its
work of removing them, so really the simple way to stay sane, so far as
newlines are concerned is: always use rstrip() to remove newlines from
lines read from a file and always add os.linesep to strings being
written to a file.
That still leaves the awkward situation where a file is created on one
OS and then processed on another, incompatible, OS and sadly, there
isn't much we can do about that except to compare the end of the line
with os.linesep to determine what the difference is.
##
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Re: web crawler in python or C?
abhinav wrote: Hi guys.I have to implement a topical crawler as a part of my project.What language should i implement C or Python?Python though has fast development cycle but my concern is speed also.I want to strke a balance between development speed and crawler speed.Since Python is an interpreted language it is rather slow.The crawler which will be working on huge set of pages should be as fast as possible.One possible implementation would be implementing partly in C and partly in Python so that i can have best of both worlds.But i don't know to approach about it.Can anyone guide me on what part should i implement in C and what should be in Python? Get real. Any web crawler is bound to spend huge amounts of its time waiting for data to come in over network pipes. Or do you have plans for massive parallelism previously unheard of in the Python world? regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Evil, evil wxPython (and a glimmer of hope)
[EMAIL PROTECTED] wrote: I rarely do GUIs, and reminded myself today why that is the case (simply, it's not fun). I implemented a simple TreeCtrl, and had to implement my own 'children' method, of all things! Here it is: def children(self,node): c = [] nc,cookie = self.GetFirstChild(node) while 1: info = self.GetItemText(nc) c.append((info,nc)) nc, cookie= self.GetNextChild(node,cookie) if not nc.IsOk(): break return c And it even fails with zero children. This is as unpythonic as it gets. However, it should be pretty easy to write small wrapper over the wxPython api. I'm thinking of wrapping or injecting additional methods to TreeCtrl that start with lowercase letters and return something sensible, with reasonable methods. Something like: root = self.AddRoot(root dir) # root is normal wx TreeCtrl root tree = EasyWx(root) # now tree is our wrapped, more fun root for c in tree.children(): print c.name # etc. etc. This is a bit like Brian Orendorff's path module that turns something low level to something you can use easily, without throwing you into a world of frameworks, toolkits and whatnot. I can see there are things like Wax or PythonCard, but they are still too frameworky, and you don't use them to extend wxPython, you use *them* and they use wxPython. I'd basically like to rely on something that is there for the long haul (plain wxPython API) but only use convenience wrappers *on my own initiative*, as it seems convenient. Just like I'd use the path module. wxPython is great as it is (a simple wrapper for a C++ toolkit) and the basic design is ok proven, I'm just too lazy to use it in its current form. Take a look at dabo, II think they're doing exactly what you're describing. http://blog.dabodev.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: question about scope
John Salerno wrote:
Here's a sentence from Learning Python:
Names not assigned a value in the function definition are assumed to be
enclosing scope locals (in an enclosing def), globals (in the enclosing
module's namespace) or built-in (in the predefined __builtin__ names
module Python provides.
I have trouble reading this sentence. First, I don't understand if the
word 'enclosing' is a verb or an adjective.
second one
The whole flow of the
sentence seems convoluted.
A bit, yes. In short: if a name is used in a function whithout having
been previously assigned in the body of this function, then this name is
looked up first in the enclosing functions definitions (python's
functions can be nested), then in the global (read : module) namespace,
then in the built-in namespace.
And if it's not found, it raises a NameError !-)
But my real question is this, which is related to the above:
Name references search at most four scopes: local, then enclosing
functions (if any), then global, then built-in.
I understand what global and built-in are, and I thought I understood
the concept of local too, but when I got to this sentence (and the
previous sentence), I became confused about the first two scopes. What's
the difference between 'local' and 'enclosing functions'?
This:
def outer_function():
a = a in outer
def inner_function():
print in inner, a = %s % a
inner_function()
Python functions can be nested (bis).
I thought that
the only way to create a local namespace was if there *was* a function
definition,
Yes. But since functions definitions can be nested...
so now I'm confused by the apparent difference that the
authors are referring to. What's an example of a local scope without
having a function definition?
I don't know.
Loops and if statements, perhaps?
Nope, AFAICT.
And feel free to dissect that first sentence up above, because I just
don't get it.
Done.
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Seaching Active Directory via ADO
Thanks but I was looking more for ADO com object than ADSI or ldap. For some strange reason it is very hard to locate any working scripts that use ADO to connect and search AD. Is there an issue with ADO and python when connecting to AD? I have try to build one myself with no luck. I think my problem is with adodb.command calls. Thanks for your response. alex23 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Heya, There are a couple of examples on the O'Reilly site. These two are taken from 'Active Directory Cookbook', the first uses a COM object while the second uses a native LDAP module: http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_com.py.tx t http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_ldap.py.t xt This might give you a start. - alex23 -- http://mail.python.org/mailman/listinfo/python-list
Re: Open Relay Test
On Fri, 17 Feb 2006 00:40:51 -0500, Steve Holden wrote: D wrote: Hi all .. how could one test to see if an open relay exists on a specific email server? I bet spammers would love someone to answer that question for them. You wouldn't be planning spam, by any chance? The spammers already know how to look for open relays. Unlike the original poster, they know how to use Google. *wink* Besides, not just spammers want to detect open relays. Many people like to block mail from open relays. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Safe Python Execution
On Thu, 16 Feb 2006 07:59:03 -0800, Alex Martelli [EMAIL PROTECTED] wrote:
Graham [EMAIL PROTECTED] wrote:
I've been messing around with trying to get a small sandbox like
environment where i could execute python code in a safe way.
Basically what the old restricted execution module attempted to do.
I've written a small amount of code to get custom interpreter running,
but i'm not really sure if its safe.
The way i'm controlling functionality is with some games and exec, so
if 'code' was the text code you wanted to execute i run:
exec code in {'__builtins__':None}
obviously this doesn't give you much to play with, but it does remove
file access and importing as far as i can tell. Can anyone think of a
hack around this? I assume if it was this easy it would be a module
already but i figured i would ask.
I suggest compiling the code and examining the names used in the code
object (co_names attribute of the code object which compile returns) --
refuse to execute the code if it mentions, defines or uses any special
name (starting and ending with two underscores). That, plus removing
almost all builtins as you do here, should be a good start.
A good start, perhaps, but still in need of a good finish.
exec 'print ' + ''.join(map(chr, [
95, 95, 98, 117, 105, 108, 116, 105, 110, 115, 95, 95]))
You can come up with a long list of restrictions to impose, and maybe that will
be good enough. But making it /perfect/ is a Herculean task, as is maintaining
it as new Python releases are made, and auditing it every time you add a new
piece of code to your system.
Just keep that in mind if you decide to pursue this.
Jean-Paul
--
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Evil, evil wxPython (and a glimmer of hope)
I rarely do GUIs, and reminded myself today why that is the case (simply, it's not fun). I implemented a simple TreeCtrl, and had to implement my own 'children' method, of all things! Here it is: def children(self,node): c = [] nc,cookie = self.GetFirstChild(node) while 1: info = self.GetItemText(nc) c.append((info,nc)) nc, cookie= self.GetNextChild(node,cookie) if not nc.IsOk(): break return c And it even fails with zero children. This is as unpythonic as it gets. However, it should be pretty easy to write small wrapper over the wxPython api. I'm thinking of wrapping or injecting additional methods to TreeCtrl that start with lowercase letters and return something sensible, with reasonable methods. Something like: root = self.AddRoot(root dir) # root is normal wx TreeCtrl root tree = EasyWx(root) # now tree is our wrapped, more fun root for c in tree.children(): print c.name # etc. etc. This is a bit like Brian Orendorff's path module that turns something low level to something you can use easily, without throwing you into a world of frameworks, toolkits and whatnot. I can see there are things like Wax or PythonCard, but they are still too frameworky, and you don't use them to extend wxPython, you use *them* and they use wxPython. I'd basically like to rely on something that is there for the long haul (plain wxPython API) but only use convenience wrappers *on my own initiative*, as it seems convenient. Just like I'd use the path module. wxPython is great as it is (a simple wrapper for a C++ toolkit) and the basic design is ok proven, I'm just too lazy to use it in its current form. -- http://mail.python.org/mailman/listinfo/python-list
Is there anything like ASP.NET for Python web apps ?
That is dragging web 'controls' to the page in design mode, binding controls to datasources, and writing code for events like page_load or button1_click ? I need to write a few small cross-platform, data-driven web apps (and I really hate J2EE...) -- http://mail.python.org/mailman/listinfo/python-list
Re: define loop statement?
David Isaac wrote: I would like to be able to define a loop statement (nevermind why) so that I can write something like loop 10: do_something instead of for i in range(10): do_something Possible? If so, how? It's not possible to create a new statement, with suite and indentation rules without hacking the interpreter or resorting to alternative bytecode compilers such as pyc. Creating a _function_ named loop is easy as Jonathan's answer shows. Georg -- http://mail.python.org/mailman/listinfo/python-list
Re: Merging two lists of data (Pythonic way)
On Thu, 16 Feb 2006 12:51:24 -0800 in comp.lang.python, SMB [EMAIL PROTECTED] wrote: Jonathan Gardner [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] codes = map(lambda x: x[0], list1) for d in list2: if d['code'] in codes: d['VERIFIED'] = 1 Is this what you were looking for? That is exactly what I was looking for. I will have to take a look at map. You might also look at list comprehensions. Replacing the first line in the above with codes = [x[0] for x in list1] should yield the same result. Regards, -=Dave -- Change is inevitable, progress is not. -- http://mail.python.org/mailman/listinfo/python-list
Re: file.read problem
I have the solution, the flaw was not in the opening of the file, but in the writing of the file. Stupid me, i opened it with mode rb, but wrote it with w instead of with wb Everybody thanks for helping me. -- http://mail.python.org/mailman/listinfo/python-list
Re: Merging two lists of data (Pythonic way)
Dave Hansen wrote: On Thu, 16 Feb 2006 12:51:24 -0800 in comp.lang.python, SMB [EMAIL PROTECTED] wrote: Jonathan Gardner [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] codes = map(lambda x: x[0], list1) for d in list2: if d['code'] in codes: d['VERIFIED'] = 1 Is this what you were looking for? That is exactly what I was looking for. I will have to take a look at map. You might also look at list comprehensions. Replacing the first line in the above with codes = [x[0] for x in list1] should yield the same result. Regards, -=Dave -- Change is inevitable, progress is not. What about : A = [ a[0] for a in LIST1 ] for d in [ d for d in LIST2 if d['code'] in A ]: d['VERIFIED'] = 1 ? Gerard -- http://mail.python.org/mailman/listinfo/python-list
Re: Evil, evil wxPython (and a glimmer of hope)
As you just said, wxPython is ...(a simple wrapper for a C++ toolkit): it is oriented toward the C++ style/mindset. -- http://mail.python.org/mailman/listinfo/python-list
Re: file.read problem
On Fri, 17 Feb 2006 00:15:31 -0800, wscrsurfdude wrote:
Farshid Lashkari wrote:
I am working on a script to get parts of raw data out of a file, and
the data I read has to be the data written in the file without CR or
LF.
So you just want to remove all the linefeeds? This should work then:
data = data.replace('\n','')
-Farshid
The problem is if I remove the linefeeds, I also delete readout data if
it is 0x0A, and I don't want this, because the files I readout has to
be a part of the original data. Another idea??
Er, have I understood you correctly? You seem to be saying that some
linefeeds are significant data, and some are not, and you want somebody to
tell you how to remove the insignificant linefeed = end of line
characters without removing the significant linefeed = important data
characters.
That's easy:
from blackmagic import readmymind, dowhatiwant
fp = file(data, rb)
readmymind()
data = dowhatiwant(fp.read())
You'll need Python 3.0 for the blackmagic module.
*wink*
Seriously, if this is your problem, then you will have no choice but to
carefully analyse the file yourself, looking at each linefeed and tossing
it away if it is insignificant. We can't tell you how to do that, because
we don't know which linefeeds are data and which are not.
But still my question is why is the:
f = open('myfile,'r')
a = f.read(5000)
working in linux??
Why shouldn't it work in Linux? The question should be, why is it not
working in Windows? (When did my code is broken become the excepted
state of affairs, and my code works the mystery that needs solving?)
I wonder whether there is a ctrl-Z in your data, and Windows is
interpreting that as end of file.
--
Steven.
--
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Re: question about scope
John Salerno wrote: I understand what global and built-in are, and I thought I understood the concept of local too, but when I got to this sentence (and the previous sentence), I became confused about the first two scopes. What's the difference between 'local' and 'enclosing functions'? I guess maybe I jumped the gun. Here's some stuff later in the chapter that I think explains it for me: -- Note that the second 'E' scope lookup layer -- enclosing defs or lambdas -- technically can correspond to more than one lookup layer. It only comes into play when you nest functions within functions.* * The scope lookup rule was known as the LGB rule in the first edition of this book. The enclosing def layer was added later in Python, to obviate the task of passing in enclosing scope names explicitly -- something usually of marginal interest to Python beginners. -- that footnote is slightly misleading, though -- there's no way to pass in enclosing scope names in Python. what you can do is to pass in *objects* into an inner scope, using the default argument syntax. an example: var = global def func1(arg): print var def func2(arg, var=var): print var here, func1's var is bound to the *name* of the outer variable, so if the variable is changed, it will print the new value. in contrast, func2's var is bound to the *value* that the outer variable had when the def statement was executed, so it will print the same thing every time you call it, even if the outer variable is changed. what the note refers to in modern python, the name binding (in func1) also works as expected if you nest scope: var = 0 # global def outer(): var = 1 # local to outer, enclosing in func1 def func1(arg): print var #enclosing in today's python, global in old pythons def func2(arg, var=var): print var func1() # prints 1 in today's python, 0 in old pythons func2() # prints 1 in all versions var = 2 func1() # prints 2 in today's python, 0 in old pythons func2() # prints 1 (I hope this didn't confuse things even more.) /F -- http://mail.python.org/mailman/listinfo/python-list
Re: calculating on matrix indices
Brian Blais wrote:
Hello,
In my attempt to learn python, migrating from matlab, I have the following
problem.
Here is what I want to do, (with the wrong syntax):
from numpy import *
t=arange(0,20,.1)
x=zeros(len(t),'f')
idx=(t5)
tau=5
x[idx]=exp(-t[idx]/tau) # ---this line is wrong (gives a TypeError)
#--
what is the best way to replace the wrong line with something that works:
replace all
of the values of x at the indices idx with exp(-t/tau) for values of t at
indices idx?
The traceback tells you exactly what's wrong:
In [7]: x[idx] = exp(-t[idx]/tau)
---
exceptions.TypeError Traceback (most recent call
last)
/Users/kern/ipython console
TypeError: array cannot be safely cast to required type
In [8]: t.dtype
Out[8]: dtype('f8')
In [9]: x.dtype
Out[9]: dtype('f4')
In [10]: exp(-t[idx]/tau).dtype
Out[10]: dtype('f8')
The righthand-side is in double precision, but you are trying to stuff it into a
single-precision array. numpy can't do that conversion without losing precision,
so it raises a TypeError. If you really wanted x to be single precision, then
you would explicitly do the conversion on the righthand-side.
In [11]: x[idx] = exp(-t[idx]/tau).astype(float32)
In [12]: x
Out[12]:
array([ 0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0.36059493, 0.35345468, 0.34645581, 0.33959553,
...
0.02024191, 0.0198411 , 0.01944822, 0.01906312, 0.01868564],
dtype=float32)
However, I suspect that you wanted x to be the same precision as t, which
defaults to double precision just like Python.
In [13]: x = zeros(len(t), float)
In [14]: x[idx] = exp(-t[idx]/tau)
In [15]: x
Out[15]:
array([ 0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0., 0., 0., 0.,
0., 0.36059494, 0.35345468, 0.34645581, 0.33959553,
...
0.02024191, 0.01984109, 0.01944821, 0.01906311, 0.01868564])
BTW, because using arange with floating point steps is somewhat unreliable
because it's floating point. You may want to use linspace() instead.
In [16]: linspace?
Type: function
Base Class: type 'function'
String Form:function linspace at 0x6e21f0
Namespace: Interactive
File:
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/numpy-0.9.5.2085-py2.4-macosx-10.4-ppc.egg/numpy/lib/function_base.py
Definition: linspace(start, stop, num=50, endpoint=True, retstep=False)
Docstring:
Return evenly spaced numbers.
Return 'num' evenly spaced samples from 'start' to 'stop'. If
'endpoint' is True, the last sample is 'stop'. If 'retstep' is
True then return the step value used.
--
Robert Kern
[EMAIL PROTECTED]
In the fields of hell where the grass grows high
Are the graves of dreams allowed to die.
-- Richard Harter
--
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Re: Python 3000 deat !? Is true division ever coming ?
On Thu, 16 Feb 2006 20:55:42 -0800, seb.haase wrote: I don't think Because this change might break code, it's being introduced very gradually. Python 2.2 begins the transition, but the switch won't be complete until Python 3.0. says enough. I'm not sure what else should be said. Should I start using from __future__ import division in my modules ? I don't know. Do you use integer or floating point division? Do you like writing float(x)/y instead of just x/y? I fear that it might make my code unreadable (people would not expect this when reading somewhere in the middle of the module !!!) Anybody using Python *should* be aware of the division issue. As soon as they see a division, it is their responsibility to *find out what it means*. That doesn't require much work: they can scroll up to the beginning of the module and look at the first few lines. That's not hard. Anybody person who is unwilling to scroll to the start of the module or use their text editor to search for from __future__ import division shouldn't be programming. I'll allow for the occasional newbie who somehow has missed out on learning about true division, but that's no reason to not implement features in the language. The cost of confusing a newbie once in a month of Sundays is far less than the benefit of introducing true division. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Sendmail ok signal?
On Thu, 16 Feb 2006 07:36:18 -0800, Gaz wrote: Hey. I looked at the Sendmail help and did not find a property where i can get an ok signal when the email is finally sent. I need something like that to show a Processing, please stand by screen when the server is sending an email, and when the email is out, another screen appears with an Email sent message. Do you know an alternative to the ok from the sendmail to do this? It depends on how you're talking to the mail server. If you're opening a pipe to /usr/lib/sendmail recipient-list or /usr/sbin/sendmail recipient-list (some *ix hosts have one, or the other, or both - few have neither), then I believe about all you have to go on is the exit status from the subprocess. If you're connecting to host:25/tcp, then you get an informative return code each time you issue an SMTP command. You can get this same effect, more or less, by opening a pipe to /usr/lib/sendmail -bs or /usr/sbin/sendmail -bs as well. And yes, sendmail and other MTA's that speak SMTP will accept responsibility for a message well before it gets to its final destination. However, once they accept the message, they are to do everything in their power to make sure the message doesn't get lost, even if it means having to deliver it twice instead of 0 times. They'll write things to disk even when it'd be faster to just leave it in memory and past it along via the network, for example - because otherwise a power failure might mean a message would get lost. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 3000 deat !? Is true division ever coming ?
Thanks for the replies, But to point out what the subject of this thread is (sorry for the typo ;-) : There is a PEP (proposal 238) to change Python so that 5/2 WOULD do the true division -- and obviously break lots of code. Just type this in your python interpeter: from __future__ import division 5/2 2.5 I'm not asking why it _doen't_ work like Matlab. I'm wondering what the chances are that what Rocco Moretti is referring to (http://www.python.org/doc/2.2.3/whatsnew/node7.html) is really planned to be persued... I don't think Because this change might break code, it's being introduced very gradually. Python 2.2 begins the transition, but the switch won't be complete until Python 3.0. says enough. Should I start using from __future__ import division in my modules ? I fear that it might make my code unreadable (people would not expect this when reading somewhere in the middle of the module !!!) Thanks, Sebastian Haase -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 3000 deat !? Is true division ever coming ?
Gregory Piñero wrote: I knew about that approach. I just wanted less typing :-( It's enough to introduce one float in the mix. 1.*a/b or float(a)/b if you don't want one more multiplication. -- http://mail.python.org/mailman/listinfo/python-list
Re: Evil, evil wxPython (and a glimmer of hope)
Ben Finney wrote: The web content is a bit sparse; fortunately the code has seen more love than the web pages. Wax was the focus of a couple of Google Summer of Code projects, and new life seems to have been gained as a result. I'm glad to hear that, however, I just took a look at the mailing list: http://sourceforge.net/mailarchive/forum.php?thread_id=9696120forum_id=44351 I am going to take a break from blogging and my personal projects. This includes Wax. In other words, Wax development will be on hold for a while. During this time, I might still address urgent bugs and such, but I don't plan to add new features. Things like this raise a bit of concern about the survivability of the project. I wouldn't mind if it was a relatively independent component but it *is* one that is heavily dependent on wxPython... Also, I have some issues with the design (I don't know how misguided they may in fact be, as you can see I'm a complete wx newbie). I'd like the wax classes to be mixins instead of superclasses, so I could just add them to the inheritance hierarchy if I needed the features... then, if wax suddenly went belly-up, I could just remove the mixins and reimplement the parts that use those, yielding a plain wxpython app. The method names, also, could be more_pythonic() so I could easily tell wax stuff from wx stuff. This would be insane if we were talking about a standard windowing system of some kind, but we have to recognize that we are dealing with volatile third party code here. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there anything like ASP.NET for Python web apps ?
If what you want is a web IDE that supports visual development, no standalone Python IDE has such support. But you can use Python in IDEs that do support these features. 1.) ActiveGrid (http://www.activegrid.com/) - closest visual web IDE where Python is a first class member. 2.) Use ASP.NET with Boo or IronPython. Not seamless IDE-wise. 3.) Wait for Coyote to finish (https://coyote.dev.java.net/). It is still J2EE but you get to use Python. Netbeans, unlike JDev does not have data bound widgets available. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python, Forms, Databases
You should check out Spyce: http://spyce.sourceforge.net/ It will work under CGI as well as Fast CGI, ModPython, or its own built in server. It also has an ASP/JSP like syntax: http://spyce.sourceforge.net/docs/doc-lang_asp.html If you plan on getting a new hosting company you might also want to look at TurboGears and Django. -jjr -- http://mail.python.org/mailman/listinfo/python-list
Re: question about scope
Fredrik Lundh wrote: John Salerno wrote: But my real question is this, which is related to the above: Name references search at most four scopes: local, then enclosing functions (if any), then global, then built-in. I understand what global and built-in are, and I thought I understood the concept of local too, but when I got to this sentence (and the previous sentence), I became confused about the first two scopes. What's the difference between 'local' and 'enclosing functions'? consider a nested function: var1 = global def outer(): var2 = enclosing def inner(): var3 = local print var1, var2, var3 inner() # call it inside inner, var1 refers to the global variable, var2 to the enclosing variable (which is local to outer), and var3 to the local variable. enclosing scope locals are also called free variables. /F Thanks guys. It seems like nested functions were what the authors had in mind, so that makes a lot more sense now. But as far as ifs and loops, is there such a thing as scope in them? For example, if I assign a variable within an if statement, is it usable anywhere else? -- http://mail.python.org/mailman/listinfo/python-list
Re: pythonic way of 'b = list(a); b.append(4)
On Thu, 16 Feb 2006 08:04:43 -0800, szabi wrote: Hi! I have a list of three values and want to call a function with four parameters. I would like to write something like: a = [1, 2, 3] f(*a, 4) This is syntactically wrong, so is there a function which appends a value to a list and returns the new value, so that I could write something like this: f(list(a).functional_append(4)) Sure there is, just not as a list method. Python is a programming language, you can write any function you like: def functional_append(L, extra): Return a new list consisting of extra appended to the items of L. return L + [extra] Now call it like this: f(functional_append(a, 4)) But in fact you can now optimize the functional_append away by just doing this: f(*a+[4]) and it will work. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: question about scope
On Thu, 16 Feb 2006 15:18:29 GMT, John Salerno [EMAIL PROTECTED] wrote: [snip] I understand what global and built-in are, and I thought I understood the concept of local too, but when I got to this sentence (and the previous sentence), I became confused about the first two scopes. What's the difference between 'local' and 'enclosing functions'? I thought that the only way to create a local namespace was if there *was* a function definition, so now I'm confused by the apparent difference that the authors are referring to. What's an example of a local scope without having a function definition? Loops and if statements, perhaps? print dir # comes from __builtins__ dir = 10 print dir # comes from globals def foo(): dir = 10 print dir # comes from locals def bar(): print dir # comes from enclosing scope - foo's scope Hope this helps, Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: file.read problem
wscrsurfdude wrote: if it's a binary file, open with mode rb. You are right about opening it in the rb mode (flaw in the start post), but also when I do this in windows in front of every 0x0A is put a 0x0D. I found a explanation why it is working in linux it is below in my post. But what i get of this that in windows in front of every 0x0A is put a 0x0D as a line feed. II have to get rid of these. if you open a file in binary mode (rb), you get the data that's in the file. no more, no less. if someone's adding CR to the files, that happens before you opened them in Python. have you, perhaps, copied binary files between the systems using FTP in text mode? if so, you've damaged the files, and there's no way to fix them, in general. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: define loop statement?
David Isaac: I would like to be able to define a loop statement (nevermind why) so that I can write something like loop 10: do_something instead of for i in range(10): do_something Possible? If so, how? Yes. By implementing a compiler or an interpreter for your programming language. Or a preprocessor that converts your language to Python, or some other suitable intermediate language. Or a programmer, that converts your pseudocode and some coffee to the desired algorithm :-) -- René Pijlman -- http://mail.python.org/mailman/listinfo/python-list
Re: Merging two lists of data (Pythonic way)
Jonathan Gardner [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] codes = map(lambda x: x[0], list1) for d in list2: if d['code'] in codes: d['VERIFIED'] = 1 Is this what you were looking for? Actually, this is not exactly what I was looking for. I failed to realize what map did, in this case using the labmda x: x[0] on each item of the list returning a list of the key numbers. The problem is that the changes made to my dictionary (in my example dictionary[VERIFIED]=1) needs to be based on the other values in each list in LIST1. In my example LIST1 was defined as [[5L, 1L, 1L, 'Personal Information'], [14L, 2L, 1L, '']] So, the dictionary changes would be involving mylist[1:] for each mylist in LIST1 based on the comparison to mylist[0]... Thank again -- http://mail.python.org/mailman/listinfo/python-list
Re: Evil, evil wxPython (and a glimmer of hope)
snoe wrote: Take a look at dabo, II think they're doing exactly what you're describing. http://blog.dabodev.com/ Dabo appear to be doing way more than what I want, with database access etc. My ideal module, when implemented, would be extremely small as far as the size of code goes. I'm using path.py as an example: http://www.jorendorff.com/articles/python/path/path.py def dirs(self, pattern=None): D.dirs() - List of this directory's subdirectories. return [p for p in self.listdir(pattern) if p.isdir()] -- http://mail.python.org/mailman/listinfo/python-list
RE: Some general questions about using stdin,stdout....
thank you very much for your help... my big mistake,was to believe that | is the pipe symbol for both,unix and python... it is really annoying,how such a simple thing can mess things Thank you for clearing this out. _ Free blogging with MSN Spaces http://spaces.msn.com/?mkt=nl-be -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Release of NumPy 0.9.5
Thomas Gellekum wrote: Travis E. Oliphant [EMAIL PROTECTED] writes: - Improvements to numpy.distutils Stupid questions: is it really necessary to keep your own copy of distutils and even install it? What's wrong with the version in the Python distribution? How can I disable the colorized output to get something more readable than yellow on white (well, seashell1)? Yes --- distutils does not provide enough functionality. Besides, it's not a *copy* of distutils. It's enhancements to distutils. It builds on top of standard distutils. I don't know the answer to the colorized output question. Please post to [EMAIL PROTECTED] to get more help and/or make suggestions. -Travis -- http://mail.python.org/mailman/listinfo/python-list
Re: mod_python and open HTTP connection
Charles wrote: Hello, I'm think about using mod_python for a project but I need to make sure: Does mod_python time out after a minute ? (I hope not). Mod_python itself doesn't time out. If such a thing happened it would be because of how Apache, some intermediate proxy or the client is configured. If I leave an HTTP connection open so that the content keeps loading inside the browser window indefinately, and if I close the browser window, the mod_python process is terminated, right? If the mod_python handler is periodically writing data back to the browser, at the point the socket connection from the client closes, the attempt to write data back to the client by the mod_python handler will result in an IOError exception being raised. Presuming that your handler code doesn't catch this and ignore it, it should cause the handler to abort. Note though that it doesn't cause any process to be terminated as that is not how Apache/mod_python work. It will cause just that current request to be terminated. That thread of control can then be reused to handle a subsequent request. BTW, for tricky questions on mod_python you are better of using the mod_python mailing list. Details on the mod_python web site. Graham -- http://mail.python.org/mailman/listinfo/python-list
Re: define loop statement?
David Isaac: I would like to be able to define a loop statement (nevermind why) so that I can write something like loop 10: do_something instead of for i in range(10): do_something Possible? If so, how? It seems that you are looking for macros; maybe Logix language (www.livelogix.net/logix) or Boo (boo.codehaus.org) can solve your problem. Otherwise you can do it with very different languages like Lisp or Scheme (with a different syntax) and maybe Dylan too. If you tell us your purpose, maybe we can suggest you a better/different solution. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: Pyserial never read
I don't know alot about python but I could help you with english? eventhough it was really good best regards- Just -- http://mail.python.org/mailman/listinfo/python-list
Re: Seaching Active Directory via ADO
I notice there is no adodb.command. This is not required? Thx for the example! Roger Upole [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Here's a short example that uses ADO to search for a user by wildcard. import win32com.client c = win32com.client.Dispatch(ADODB.Connection) c.Open(Provider=ADSDSOObject) rs,rc=c.Execute( SELECT adspath, title, name From 'LDAP://DC=yourdomain, DC=COM' where objectClass='user' and name='Roger*' ) while not rs.EOF: for f in rs.Fields: print f.Name, f.Value rs.MoveNext() hth Roger LittlePython [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Thanks but I was looking more for ADO com object than ADSI or ldap. For some strange reason it is very hard to locate any working scripts that use ADO to connect and search AD. Is there an issue with ADO and python when connecting to AD? I have try to build one myself with no luck. I think my problem is with adodb.command calls. Thanks for your response. alex23 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Heya, There are a couple of examples on the O'Reilly site. These two are taken from 'Active Directory Cookbook', the first uses a COM object while the second uses a native LDAP module: http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_com.py.tx t http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_ldap.py.t xt This might give you a start. - alex23 == Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News== http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups = East and West-Coast Server Farms - Total Privacy via Encryption = -- http://mail.python.org/mailman/listinfo/python-list
Re: Open Relay Test
Nope, quite the contrary..I'm looking to write a simple program for a client of mine that will, among other things, verify that their clients' email servers do not have open relays. -- http://mail.python.org/mailman/listinfo/python-list
zope 3.2 and imprt errors
Hi, I've installed zope3.2 froma tarball. It has been installed in /usrlocal/Zope-3-2. I am developing a package under ~/zope3instance/lib/python/ (which is my instance directory). My PYTHONPATH is: /home/zunbeltz/libs/python/:/usr/local/Zope-3.2.0/lib/python:/home/zunbeltz/zope3instance/lib/python:/home/zunbeltz/pycontrol I have the following error Python 2.4.2 (#2, Sep 30 2005, 21:19:01) [GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2 Type help, copyright, credits or license for more information. from zope.app import container container.interfaces Traceback (most recent call last): File stdin, line 1, in ? AttributeError: 'module' object has no attribute 'interfaces' container.interfaces.IContained Traceback (most recent call last): File stdin, line 1, in ? AttributeError: 'module' object has no attribute 'interfaces' the file whre zope.app.container is : /usr/local/Zope-3.2.0/lib/python/zope/app/container/__init__.pyc And in this directory there is a module named interfaces I'm becoming crazy, I don't know where is the problem. Any idea? Thanks in advance Zunbeltz -- http://mail.python.org/mailman/listinfo/python-list
RE: Win32_Process.Create -- not starting process
[abcd] | Tim, | I am skipping using the batch file and only executing the python | script directly...and so far it works fine. | | So now I have: | pid, retVal = | wmi.WMI(1.2.3.4).new(Win32_Process).Create(CommandLine=c: | \python\python.exe | c:\some_script.py) | | Thanks again...not sure why when using the batch file to start it | wouldnt always work, but as long is it works now! Thanks for letting me know. Hope it continues to work for you. BTW, I would recommend you either to use a raw string for that command line (rc:\python\python.exe c:\xx.py) or to double up your slashes (c:\\python\\python.exe c:\\xx.py). As it happens \p has no special meaning that I'm aware of, but better safe than sorry... TJG This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk -- http://mail.python.org/mailman/listinfo/python-list
embedding python in HTML
I'm hoping someone can give me the basics for how to do very simple things with Python scripts from within my HTML. For example, I know that I can do this in PHP: h1Here is a header/h1 ?php include(file.html); ?// include some external html pMore html/p So to do this with Python, do I simply integrate it into the HTML as above, with no extra steps? Also, which symbols do I use to denote Python language? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
preserving POST data
Lets say that I'm filling out a form and the information gets sent to another server first for some processing(before the one that it "should" go to). But from there, I want that intermediate server to be able to preserve this POST data using python so it can still retrieve the page that was originally requested (with some modifications from the intermediate server). Is there a way to do this with python? Thanks for the help.-Steve Brings words and photos together (easily) with PhotoMail - it's free and works with Yahoo! Mail.-- http://mail.python.org/mailman/listinfo/python-list
Merging two lists of data (Pythonic way)
I have two lists of data like the following:
LIST1
[[5L, 1L, 1L, 'Personal Information'], [14L, 2L, 1L, '']]
LIST2
[{'code': 5L, 'name': 'First Name', 'value': [''], 'label': 'First Name',
'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L, 'order': 1L},
{'code': 14L, 'name': 'Last Name', 'value': [''], 'label': 'Last Name',
'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L, 'order': 2L},
{'code': 16L, 'name': 'Job Title', 'value': [], 'label': 'Job Title',
'width': 40L, 'separator': '', 'height': 0L, 'type': 2L, 'order': 3L}]
The important comparison values here are list[0] for each list in LIST1 and
dictionary[code] for each dictionary in LIST2.
What I am doing is looking for a pythonic way to parse the LIST2 code
values and make appropriate changes to to each dictionary if the code
value is the first element of a list in LIST1.
The final result may look like this given that the change is adding a new
key/value of VERIFIED/1 for the matches.
LIST3
[{'VERIFIED':1,'code': 5L, 'name': 'First Name', 'value': [''], 'label':
'First Name', 'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L,
'order': 1L}, {'VERIFIED':1,'code': 14L, 'name': 'Last Name', 'value': [''],
'label': 'Last Name', 'width': 0L, 'separator': ',', 'height': 0L, 'type':
2L, 'order': 2L}, {'code': 16L, 'name': 'Job Title', 'value': [], 'label':
'Job Title', 'width': 40L, 'separator': '', 'height': 0L, 'type': 2L,
'order': 3L}]
I know I could do this with two for loops, but am looking for a better
solution maybe involving list comprehension.
Any pointers are appreciated.
Thanks
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Re: web crawler in python or C?
This is following the pattern of your previous post on language choice wrt. writing a mail server. It is very common for beginers to over emphasize performance requirements, size of the executable etc. More is always good. Right? Yes! But at what cost? The rule of thumb for all your Python Vs C questions is ... 1.) Choose Python by default. 2.) If your program is slow, it's your algorithm that you need to check first. Python strictly speaking will be slow because of its dynamism. However, most of whatever is performance critical in Python is already implemented in C. And the speed difference of well written Python programs with properly chosen extensions and algorithms is not far off. 3.) Remember that you can always drop back to C where ever you need to without throwing all of your code. And even if you had to, Python is very valuable as a prototyping tool since it is very agile. You would have figured out what you needed to do by then, that rewriting it in C will only take a fraction of the time compared to if it was written in C directly. Don't even start with asking the question, is it fast enough? till you have already written it in Python and it turns out that it is not running fast enough despite correctness of your code. If it does, you can fix it relatively easily. It is easy to write bad code in C and poorly written C code performance is lower than well written Python code performance. Remember Donald Knuth's quote. Premature optimization is the root of all evil in programming. C is a language intended to be used when you NEED tight control over memory allocation. It has few advantages in other scenarios. Don't abuse it by choosing it by default. -- http://mail.python.org/mailman/listinfo/python-list
Re: define loop statement?
Rene Pijlman wrote: David Isaac: I would like to be able to define a loop statement (nevermind why) so that I can write something like loop 10: do_something instead of for i in range(10): do_something Possible? If so, how? Yes. By implementing a compiler or an interpreter for your programming language. Or a preprocessor that converts your language to Python, or some other suitable intermediate language. Or a programmer, that converts your pseudocode and some coffee to the desired algorithm :-) Or by hacking through the Python source and creating his own somehow pythonish but absolutely not python language -- http://mail.python.org/mailman/listinfo/python-list
Re: question about scope
John Salerno said unto the world upon 16/02/06 09:18 AM: snip Name references search at most four scopes: local, then enclosing functions (if any), then global, then built-in. I understand what global and built-in are, and I thought I understood the concept of local too, but when I got to this sentence (and the previous sentence), I became confused about the first two scopes. What's the difference between 'local' and 'enclosing functions'? I thought that the only way to create a local namespace was if there *was* a function definition, so now I'm confused by the apparent difference that the authors are referring to. What's an example of a local scope without having a function definition? Loops and if statements, perhaps? And feel free to dissect that first sentence up above, because I just don't get it. Does this help? IDLE 1.1.2 scope = Global def test(): scope = enclosing def nested_test(): print scope nested_test() test() enclosing def test2(): scope = enclosing def nested_test(): scope = nested print scope nested_test() test2() nested Best, Brian vdB -- http://mail.python.org/mailman/listinfo/python-list
Re: Seaching Active Directory via ADO
Here's a short example that uses ADO to search for a user by wildcard. import win32com.client c = win32com.client.Dispatch(ADODB.Connection) c.Open(Provider=ADSDSOObject) rs,rc=c.Execute( SELECT adspath, title, name From 'LDAP://DC=yourdomain, DC=COM' where objectClass='user' and name='Roger*' ) while not rs.EOF: for f in rs.Fields: print f.Name, f.Value rs.MoveNext() hth Roger LittlePython [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Thanks but I was looking more for ADO com object than ADSI or ldap. For some strange reason it is very hard to locate any working scripts that use ADO to connect and search AD. Is there an issue with ADO and python when connecting to AD? I have try to build one myself with no luck. I think my problem is with adodb.command calls. Thanks for your response. alex23 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Heya, There are a couple of examples on the O'Reilly site. These two are taken from 'Active Directory Cookbook', the first uses a COM object while the second uses a native LDAP module: http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_com.py.tx t http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_ldap.py.t xt This might give you a start. - alex23 == Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News== http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups = East and West-Coast Server Farms - Total Privacy via Encryption = -- http://mail.python.org/mailman/listinfo/python-list
Re: Seaching Active Directory via ADO
You could also use the excellent active_directory module of Tim Golden (http://tgolden.sc.sabren.com/python/active_directory.html)Your query would then become: import active_directoryfor person in active_directory.search (objectClass='user',name='Roger*'): print person.displayName On 2/17/06, Roger Upole [EMAIL PROTECTED] wrote: Here's a short example that uses ADO to search for auser by wildcard.import win32com.clientc = win32com.client.Dispatch(ADODB.Connection)c.Open(Provider=ADSDSOObject)rs,rc= c.Execute(SELECT adspath, title, nameFrom 'LDAP://DC=yourdomain, DC=COM'where objectClass='user' and name='Roger*')while not rs.EOF:for f in rs.Fields :print f.Name, f.Valuers.MoveNext()hthRogerLittlePython [EMAIL PROTECTED] wrote in messagenews:[EMAIL PROTECTED] ... Thanks but I was looking more for ADO com object than ADSI or ldap. For some strange reason it is very hard to locate any working scripts that use ADOto connect and search AD. Is there an issue with ADO and python when connecting to AD? I have try to build one myself with no luck. I think my problem is with adodb.command calls. Thanks for your response. alex23 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Heya, There are a couple of examples on the O'Reilly site. These two are taken from 'Active Directory Cookbook', the first uses a COM object while the second uses a native LDAP module: http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_com.py.tx t http://www.rallenhome.com/books/adcookbook/src/18.6-rootdse_python_ldap.py.t xt This might give you a start. - alex23 == Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News== http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups= East and West-Coast Server Farms - Total Privacy via Encryption =-- http://mail.python.org/mailman/listinfo/python-list-- It is not economical to go to bed early to save the candles if the result is twins. - Chinese Proverb -- http://mail.python.org/mailman/listinfo/python-list
Re: mod_python help!
treelife a écrit : I'm getting and internal server error when | run the following mod_python script. I am actually trying to run Django. Script: from mod_python import apache def handler(req): req.content_type = 'text/plain' req.write(Under Construction) return apache.OK You just cant't import mod_python.apache from the command line. To run your scripts, you usually do things like (not tested): try: from mod_python import apache APACHE = True except ImportError: # for when I'm outside Apache APACHE = False class DummyRequest: Simulates a request object def write(self, mstr): print mstr # you may need some other things... def handler(req): req.content_type = 'text/plain' req.write(Under Construction) if APACHE: return apache.OK ## if __name__ == __main__: req = DummyRequest() handler(req) HTH, Olivier -- http://mail.python.org/mailman/listinfo/python-list
Re: Does python have an internal list/dictionary of functions?
[Carl J. Van Arsdall] basically we have: def functA(): ... pass functA function functA at 80db128 And what I'd like to do is: __internalFuncDict__['functA'] function functA at 80db128 globals()['functA'] -- http://mail.python.org/mailman/listinfo/python-list
Re: Win32_Process.Create -- not starting process
Tim Golden wrote: BTW, I would recommend you either to use a raw string for that command line (rc:\python\python.exe c:\xx.py) or to double up your slashes (c:\\python\\python.exe c:\\xx.py). As it happens \p has no special meaning that I'm aware of, but better safe than sorry... i used double slashes, i guess i didn't type it correctly here. Thanks for the reminder though. -- http://mail.python.org/mailman/listinfo/python-list
Antigen found Exceeded Internet Timeout virus
Title: Antigen found Exceeded Internet Timeout virus Antigen for Exchange found Body of Message infected with Exceeded Internet Timeout virus. The file is currently Detected. The message, Re: Jython socket typecasting problems, was sent from [EMAIL PROTECTED] and was discovered in IMC Queues\Inbound located at Prism Payment Technologies/PRISMTSS/MAIL. -- http://mail.python.org/mailman/listinfo/python-list
Re: Open Relay Test
D [EMAIL PROTECTED] writes: Hi all .. how could one test to see if an open relay exists on a specific email server? Use the Distributed Sender Blackhole List service: URL:http://dsbl.org/ They have client programs to make it easy to use the service to test mail systems for vulnerabilities: URL:http://dsbl.org/programs -- \ Buy not what you want, but what you need; what you do not need | `\ is expensive at a penny. -- Cato, 234-149 BC, Relique | _o__) | Ben Finney http://www.benfinney.id.au/ -- http://mail.python.org/mailman/listinfo/python-list
Re: embedding python in HTML
Rene Pijlman wrote: John Salerno: [Python alternative for PHP] So to do this with Python, do I simply integrate it into the HTML as above, with no extra steps? You'd need something like the PHP engine, that understands Python rather than PHP. My web server can run Python, fortunately. Now that they've turned it on for me, I wanted to try it out, but I didn't know how to go about writing a bit of code to stick into an HTML file. -- http://mail.python.org/mailman/listinfo/python-list
Re: Databases and python
On Thu, 16 Feb 2006 10:09:42 +0100, Rene Pijlman wrote: Dan Stromberg: is there a python database interface that would allow me to define a -lot- of tables? Like, each word becomes a table, and then the fields in that table are just the filenames that contained that word. Give ZODB a try. http://www.zope.org/Wikis/ZODB/FrontPage http://www.python.org/workshops/2000-01/proceedings/papers/fulton/zodb3.html Aside from object persistence, what would this add for me? Is each object saved in a separate file, or are they bunched together into one or more files? My first attempt would be: a BTree with the word as key, and a 'list of filenames' as value. http://www.zope.org/Wikis/ZODB/FrontPage/guide/node6.html#SECTION00063 This is basically what I'm doing now, except the most recently used lists of filenames are kept in RAM to avoid going from on disk string to in memory list to on disk string quite as much. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python advocacy in scientific computation
Hi, Like it - an area that doesn't come out strongly enough for me is Python's ability to drop down to and integrate with low level algorithms. This allows me to to optimise the key bits of design in python very quickly and then if I still need more poke i can drop down to low level programming languages. Optimise design, not code unless I really need to. To be fair the same is at least partly true for Java ( though supporting JNI code scares me ) but my prototyping productivity isn't as high. The distributed / HPC packages may also be worth noting - PyMPI and PyGlobus. p Michael Tobis wrote: Someone asked me to write a brief essay regarding the value-add proposition for Python in the Fortran community. Slightly modified to remove a few climatology-related specifics, here it is. I would welcome comments and corrections, and would be happy to contribute some version of this to the Python website if it is of interest. === The established use of Fortran in continuum models such as climate models has some benefits, including very high performance and flexibility in dealing with regular arrays, backward compatibility with the existing code base, and the familiarity with the language among the modeling community. Fortran 90 and later versions have taken many of the lessons of object oriented programming and adapted them so that logical separation of modules is supported, allowing for more effective development of large systems. However, there are many purposes to which Fortran is ill-suited which are increasingly part of the modeling environment. These include: source and version control and audit trails for runs, build system management, test specification, deployment testing (across multiple platforms), post-processing analysis, run-time and asynchronous visualization, distributed control and ensemble management. To achieve these goals, a combination of shell scripts, specialized build tools, specialized applications written in several object-oriented languages, and various web and network deployment strategies have been deployed in an ad hoc manner. Not only has much duplication of effort occurred, a great deal of struggling up the learning curves of various technologies has been required as one need or another has been addressed in various ad hoc ways. A new need arises as the ambitions of physical modeling increase; this is the rapid prototyping and testing of new model components. As the number of possible configurations of a model increases, the expense and difficulty of both unit testing and integration testing becomes more demanding. Fortunately, there is Python. Python is a very flexible language that has captured the enthusiasm of commercial and scientific programmers alike. The perception of Python programmers coming from almost any other language is that they are suddenly dramatically several times more productive than previously, in terms of functionality delivered per unit of programmer time. One slogan of the Python community is that the language fits your brain. Why this might be the case is an interesting question. There are no startling computer science breakthroughs original to the language, Rather, Python afficionados will claim that the language combines the best features of such various languages as Lisp, Perl, Java, and Matlab. Eschewing allegiance to a specific theory of how to program, Python's design instead offers the best practices from many other software cultures. The synergies among these programming modes is in some ways harder to explain than to experience. The Python novice may nevertheless observe that a single language can take the place of shell scripts, makefiles, desktop computation environments, compiled languages to build GUIs, and scripting languages to build web interfaces. In addition, Python is useful as a wrapper for Fortran modules, facilitating the implementation of true test-driven design processes in Fortran models. Another Python advocacy slogan is batteries included. The point here is that (in part because Python is dramatically easier to write than other languages) there is a very broad range of very powerful standard libraries that make many tasks which are difficult in other languages astonishingly easy in Python. For instance, drawing upon the standard libraries (no additional download required) a portable webserver (runnable on both Microsoft and Unix-based platforms) can be implemented in seven lines of code. (See http://effbot.org/librarybook/simplehttpserver.htm ) Installation of pure python packages is also very easy, and installation of mixed language products with a Python component is generally not significantly harder than a comparable product with no Python component. Among the Python components and Python bindings of special interest to scientists are the elegant and powerful matplotlib plotting package, which began by emulating and now
Re: Some general questions about using stdin,stdout....
asdsd sir wrote: thank you very much for your help... my big mistake,was to believe that | is the pipe symbol for both,unix and python... it is really annoying,how such a simple thing can mess things Thank you for clearing this out. It is indeed annoying when assumptions we carry from one environment turn out to be untrue for another. I can almost hear the unspoken thought (But Perl is similar to shell scripting in this way, so why aren't other languages?) - though I may be doing you a disservice assuming that you know anything about Perl. You will find as your programming experience increases that the different languages you learn are appropriate for different purposes, and have different advantages and disadvantages. Python excels at expressing algorithms in an unambiguous and easily-readable way. It's worth taking the time to learn it, and you are clearly already on your way. I look forward to reading your next question. Welcome to comp.lang.python. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Add a month
Hi, this is probably a really simple question but... How do you add a month to a datetime date in python? It would be nice if you could do something like: d = datetime.date(2006,2,17) dm = datetime.timedelta(months=1) d_new = d + dm but timedelta doesn't have a 'months' setting. Am I missing some easy method or do I have to code a work around myself?? Thanks in advance for the help! -- http://mail.python.org/mailman/listinfo/python-list
Re: mod_python and open HTTP connection
On Thu, 16 Feb 2006 21:35:13 -0300, Kane [EMAIL PROTECTED] wrote: btw, 'ping' as written above is horrible. If a code review turned _that_ up on production someone would be fired, along with whoever hired them, whoever ate lunch with them and anyone that waves goodbye. Really? Wow... Gotta be carefull from now on... -- Charles. Desenvolvimento e criação de sites: www.auriance.com Hospedagem de sites e servidores dedicados: www.auriance.net -- http://mail.python.org/mailman/listinfo/python-list
Does python have an internal list/dictionary of functions?
Python Gurus: Let me elaborate a bit more on this question. Basically, I want to know if there is some data structure in python that maps a string function name to an address of a function or something to that nature. If this is confusing, let me describe what I want to do and see if anyone has any ideas. basically we have: def functA(): ... pass functA function functA at 80db128 And what I'd like to do is: __internalFuncDict__['functA'] function functA at 80db128 This is just for a little experimental project of mine, any help or pointers to the proper pages in the manual would be greatly appreciated. Basically, I know that I can create something like this if I have to but I was very much hoping that something already existed somewhere that I could get to via python or by writing a C extension. Thanks in advance! -carl -- Carl J. Van Arsdall [EMAIL PROTECTED] Build and Release MontaVista Software -- http://mail.python.org/mailman/listinfo/python-list
Terminating a function
Hi, Im rather new to threads in python but Im trying to terminate a function call (or the execution of the function) after a certain period of time has passed. Do i need to use threads with this? if i do, how do i go about doing it? Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Add a month
[EMAIL PROTECTED] Hi, this is probably a really simple question but... How do you add a month to a datetime date in python? It would be nice if you could do something like: d = datetime.date(2006,2,17) dm = datetime.timedelta(months=1) d_new = d + dm but timedelta doesn't have a 'months' setting. Am I missing some easy method or do I have to code a work around myself?? You need to code you own version. It was not included with datetime.timedelta() because the definition is ambiguous (i.e. what date is one month after Jan 30th?). Raymond -- http://mail.python.org/mailman/listinfo/python-list
