🌐 Mailman 3 March 2005 - Python-list - python.org

Pypy - Which C modules still need converting to py?
by Caleb Hattingh Aug. 30, 2005

Aug. 30, 2005

Hi all I saw it on a webpage a few days ago, can't seem to find it again. Tried a google search for "pypy needed translate C modules" but that didn't turn up what I was looking for. Anyone have that page ref handy listing the C modules that the pypy team need translated into python? thanks Caleb

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problem using py2exe
by Ho-Kyeong Aug. 1, 2005

Aug. 1, 2005

Can anybody give me a detailed explanation of using extension modules in py2exe? My python code imports 'tkSnack', a extension module, and my setup.py is like this: #setup.py from distutils.core import setup import py2exe setup(name="pitch", scripts=["pitch.py"] ) (that is, pitch.py imports tkSnack.) In cmd, I type 'python setup.py py2exe'. It works well, but I execute the pitch.exe, then error happens. Traceback (most recent call last): File "<string>", line 14, in ? File "<string>", line 7, in pitch File "tkSnack.pyc", line 21, in initializeSnack TclError: can't find package snack I look up in python.org, but I have no idea.

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Re: Building Python with Tcl/Tk on Cygwin_NT-5.1
by Jason Tishler July 25, 2005

July 25, 2005

Dean, Please keep your replies on-list. On Wed, Feb 02, 2005 at 05:14:21AM -0800, Dean N. Williams wrote: > I am trying to do the following according to your notes: > > 3. Due to issues with Cygwin's fork() and DLL base address conflicts, > one should rebase their Cygwin system to prevent fork() failures. Use > the following procedure to rebase your system: > > a. install the Cygwin rebase package (if necessary) > b. shutdown all Cygwin processes > c. start bash (do not use rxvt) > d. execute rebaseall (in the bash window) > > I think this is why idle fails. So I did the above: > > [Dean Williams@ippc ...ASD_work/bin]$ rebaseall > ReBaseImage (/usr/bin/cygexpat-0.dll) failed with last error = 6 > > What am I doing wrong here? It appears you did not follow step b above. Did you shutdown *all* Cygwin processes include services? Jason -- PGP/GPG Key: http://www.tishler.net/jason/pubkey.asc or key servers Fingerprint: 7A73 1405 7F2B E669 C19D 8784 1AFD E4CC ECF4 8EF6

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psycopg authentication
by jslowery＠gmail.com July 8, 2005

July 8, 2005

Hello, I'm new to both PostgreSQL and psycopg and I'm trying to connect to my database running on localhost. I have postgres setup to do md5 authentication and this works when using a db admin tool on my local network. For some reason, psycopg fails with IDENT authentication. >>> import psycopg >>> psycopg.connect("dbname=jlowery user=jlowery host=localhost password=XXX") Traceback (most recent call last): File "<stdin>", line 1, in ? psycopg.OperationalError: FATAL 1: IDENT authentication failed for user "jlowery" Is there a way to make this module connect with MD5 auth?

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Re: 20050111: list basics
by Abigail May 16, 2005

May 16, 2005

Xah Lee (xah(a)xahlee.org) wrote on MMMMCLII September MCMXCIII in <URL:news:1105512773.543336.29930@c13g2000cwb.googlegroups.com>: :: :: # in perl, list is done with paren (). Wrong. Except in a few cases, parens don't make lists. Parens are used from precedence. *Context* makes lists. :: # the at sign in front of variable is necessary. The at sign in front of a variable means the variable is an array. Arrays are *NOT* lists. :: # it tells perl that it is a list. :: @a = (0,1,2,'three',4,5,6,7,8,9); :: :: # perl can't print lists. To show a list content, :: # load the package Data::Dumper, e.g. :: use Data::Dumper; :: print '@a is:', Dumper(\@a); Utter bullshit. Perl's print statement has no problem accepting a list. In fact, YOUR EXAMPLE PASSES A LIST to print. But this works fine too: @a = ('Xah ', 'Lee ', 'does ', 'not ', 'know ', 'Perl'); print @a; __END__ Xah Lee does not know Perl :: # the backslash in front of @a is to tell Perl :: # that "get the "address" of the "array" @a". Wrong. Perl is not C. You get a reference, not a pointer. :: # it is necessary in Dumper because Dumper is :: # a function that takes a memory address. Wrong. Perl functions don't take memory addresses. Perl doesn't allow the programmer to do direct memory access. :: # see perldoc -t Data::Dumper for the intricacies :: # of the module. Please do so yourself. :: # to join two lists, just enclose them with () :: @b = (3,4); :: @c = (@a,@b); :: print '\@c is', Dumper \@c; :: # note: this does not create nested list. There is no such thing as "nested lists". :: # to extrat list element, append with [index] :: # the index can be multiple for multiple elements :: @b = @a[3,1,5]; :: print Dumper \@b; Why are you printing to the Dumper filehandle? :: # to replace parts, do :: $a[3]= 333; :: print ' is', Dumper \@a; :: # note the dollar sign. :: # this tells Perl that this data is a scalar :: # as opposed to a multiple. :: # in perl, variable of scalars such as numbers and strings :: # starts with a dollar sign, while arrays (lists) starts with Again, arrays are NOT lists. :: # a at @ sign. (and harshes/dictionaries starts with %) :: # all perl variables must start with one of $,@,%. Or *, or &. And some variables don't have a sigil in front of them. :: # one creates nested list by :: # embedding the memory address into the parent list :: @a=(1,2,3); :: @b = (4,5, \@a, 7); :: print 'nested list is', Dumper \@b; Rubbish. That's not a nested list. @b is an *ARRAY*, whose third element is a *REFERENCE* to another *ARRAY*. :: # to extrat element from nested list, :: $c = $b[2]->[1]; :: print '$b[2]=>[1] is', $c; :: :: # the syntax of nested lists in perl is quite arty, see :: # perldoc -t perldata :: Xah Please Xah, do the Perl and Python communities a favour, and stop posting bullshit. Abigail -- perl -e '* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %; BEGIN {% % = ($ _ = " " => print "Just Another Perl Hacker\n")}'

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ANN: PyDev 0.9.1 released
by Fabio Zadrozny April 25, 2005

April 25, 2005

Hi All, PyDev - Python IDE (Python development enviroment for Eclipse) version 0.9.1 has just been released. You can check the homepage (http://pydev.sourceforge.net/) or my blog (http://pydev.blogspot.com/) for more details. ------------------------------------------------------ COMMENTS ON RELEASE: Content assistant improvements: - assign content assistant when assigned to variable strips the "get"; - move imports content assistant should be improved to move import closer to existant import and not to top of file; - Icons added to them; Others: - Ctrl+Shift+O: if no selection: Organizes all global imports from the file (sorts alphabetically); - Ctrl+Shift+O: if some line selection: sorts alphabetically the lines selected; - Ctrl+Shift+F: if no selection: Formats all code; - Ctrl+Shift+F: if some line selection: Formats selected code; - PyLint only blocks interface on "update results"; - the namespace in debug mode is not polluted anymore (Scott Schleiser provided the patch); - The PYTHONPATH used for debug now should be the same used in run. - Editor preferences Code Completion: - get parameters in code completion; - builtins like ' ', {}, [] should bring correct suggestions; - relative imports; - other bug-fixes; ------------------------------------------------------ Regards, Fabio Zadrozny ------------------------------------------------------ Software Developer ESSS - Engineering Simulation and Scientific Software www.esss.com.br

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Formated String in optparse
by norbert.thek＠gmail.com April 14, 2005

April 14, 2005

Hi I'm using Python 24 on Windows > (2k) Is there an easy way to convince optparse to accept newline in the helpstring? and more importand also in the 'desc' string. I tried everything (from the os.linesep) to \n, \r, \r\n, ... Norbert

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unicode encoding usablilty problem
by aurora April 12, 2005

April 12, 2005

I have long find the Python default encoding of strict ASCII frustrating. For one thing I prefer to get garbage character than an exception. But the biggest issue is Unicode exception often pop up in unexpected places and only when a non-ASCII or unicode character first found its way into the system. Below is an example. The program may runs fine at the beginning. But as soon as an unicode character u'b' is introduced, the program boom out unexpectedly. >>> sys.getdefaultencoding() 'ascii' >>> a='\xe5' >>> # can print, you think you're ok ... print a å >>> b=u'b' >>> a==b Traceback (most recent call last): File "<stdin>", line 1, in ? UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 0: ordinal not in range(128) >>> One may suggest the correct way to do it is to use decode, such as a.decode('latin-1') == b This brings up another issue. Most references and books focus exclusive on entering unicode literal and using the encode/decode methods. The fallacy is that string is such a basic data type use throughout the program, you really don't want to make a individual decision everytime when you use string (and take a penalty for any negligence). The Java has a much more usable model with unicode used internally and encoding/decoding decision only need twice when dealing with input and output. I am sure these errors are a nuisance to those who are half conscious to unicode. Even for those who choose to use unicode, it is almost impossible to ensure their program work correctly.

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Problem with national characters
by Leif B. Kristensen April 9, 2005

April 9, 2005

I'm developing a routine that will parse user input. For simplicity, I'm converting the entire input string to upper case. One of the words that will have special meaning for the parser is the word "før", (before in English). However, this word is not recognized. A test in the interactive shell reveals this: leif@balapapa leif $ python Python 2.3.4 (#1, Feb 7 2005, 21:31:38) [GCC 3.3.5 (Gentoo Linux 3.3.5-r1, ssp-3.3.2-3, pie-8.7.7.1)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> 'før'.upper() 'F\xf8R' >>> 'FØR' 'F\xd8R' >>> In Windows, the result is slightly different, but no better: C:\Python23>python ActivePython 2.3.2 Build 232 (ActiveState Corp.) based on Python 2.3.2 (#49, Nov 13 2003, 10:34:54) [MSC v.1200 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> 'før'.upper() 'F\x9bR' >>> 'FØR' 'F\x9dR' >>> Is there a way around this problem? My character set in Linux is ISO-8859-1. In Windows 2000 it should be the equivavent Latin-1, though I'm not sure about which character set the command shell is using. -- Leif Biberg Kristensen http://solumslekt.org/

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Grouping code by indentation - feature or ******?
by Tim Tyler April 8, 2005

April 8, 2005

What do you guys think about Python's grouping of code via indentation? Is it good - perhaps because it saves space and eliminates keypresses? Or is it bad - perhaps because it makes program flow dependent on invisible, and unpronouncable characters - and results in more manual alignment issues by preventing code formatters from managing indentation? Python is certainly pretty unorthodox in this area. How would you have dealt with the issue of how to group statements? -- __________ |im |yler http://timtyler.org/ tim(a)tt1lock.org Remove lock to reply.

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