[ANN] Release 0.37 of Task Coach
Hi all, I'm pleased to announce release 0.37 of Task Coach. New in this release: Bugs fixed: - Icons in tree view on Windows 2000 (1194654). I hope I fixed this, but since I have no access to Windows 2000 it's a bit difficult to test. Features added: - Columns in the task list view can be turned on/off by right-clicking on the column headers. - Tasks can be sorted either by due date or alphabetically (1177984). - More options when editing an effort record. - Used a new DatePickerCtrl (1191909). What is Task Coach? Task Coach is a simple task manager that allows for hierarchical tasks, i.e. tasks in tasks. Task Coach is open source (GPL) and is developed using Python and wxPython. You can download Task Coach from: http://taskcoach.niessink.com https://sourceforge.net/projects/taskcoach/ A binary installer is available for Windows XP, in addition to the source distribution. Note that Task Coach is alpha software, meaning that it is wise to back up your task file regularly, and especially when upgrading to a new release. Cheers, Frank -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Release of version 0.3a1 of xlrd (Excel read) package
The first publicly-released version of the xlrd (Excel read) package is now available for download from: * http://www.lexicon.net/sjmachin/xlrd.htm * PyPI (Windows installer only; unresolved problem with uploading source-distribution zip file) Purpose: Provide a library for developers to extract data from Microsoft Excel (tm) spreadsheet files. It is not an end-user tool. Platform: Any. You dont need to be on Windows. If you are, you can avoid hassles with approaches like COM, ODBC, save-as-CSV, etc Python requirements: Works with Python 2.2 or later. There are no dependencies on modules or packages outside the standard Python distribution. Versions of Excel supported: 2004, 2002, XP, 2000, 97, 95, 5.0, 4.0, 3.0. Features: * Strong support for handling dates, and documentation of Excel date problems and how to avoid them. * Unicode aware; correctly handles compressed Unicode in modern files; decodes legacy charsets in older files (if Python has the codec). * Extracts all data (including Booleans and error-values) Exclusions: xlrd will not attempt to decode password-protected (encrypted) files. Otherwise, it will safely and reliably ignore any of these if present: * Anything to do with the on-screen presentation of the data (fonts, panes, column widths, row heights, ...) * Charts, Macros, Pictures, any other embedded object. WARNING: currently this includes embedded worksheets. * Visual Basic (VBA) modules * Formulas (results of formula calculations are extracted, of course) * Comments and hyperlinks WANTED: *ALPHA* testers with: * bigendian platforms, and/or * Excel 95 (or earlier) files created in non-Latin1 locales Feedback: mailto: [EMAIL PROTECTED] preferably with [xlrd] in the message subject. --- End of forwarded message --- -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
X2Y 1.1.7 Document Processor Released!
X2Y is a flexible, configurable and extendable server-based document processing framework written in python. It has the following feaures: - Cross platform - Fully documented - Run as either a cron job, scheduled task or by hand - Fully configurable logging and notification - Fully configurable processing chains, including multiple seperate processing chains on a single server - Scriptable conversion plugins, inputs and outputs - Processors can be written in ANY language - Input from local file system, http get or imap folder supplied as standard - Output to local file system, http post or mail message supplied as standard - Supplied processors for EasyPDF and OpenOffice for document conversion Potential applications include server-side document conversion, virus scanning. We are particularly interested in hearing from anyone who develops new inputs, outputs and processors! For more information, please see: http://www.simplistix.co.uk/software/applications/x2y cheers, Chris -- Simplistix - Content Management, Zope Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Optimise Europython competition
A classic dilemma for conferences is that if you have many tracks, you may find that all of a sudden, a room is swamped, and there is a queue of people wanting to get in. Another problem is that you risk scheduling talks against each other that have a very large set of interested people in common. At Europython we are this year going to try a new way of scheduling, in order to reduce these problems. Before the schedule is made, we will give all attendees the opportunity to register what talks they are most interested in. We then want to make a schedule that is optimised based on these data. Since I am no expert in optimising algorithms of this type, and since the time I have available for these things is limited, I'm turning to the readers of c.l.p and python-logic for help. I'm offering the following bounty for a working solution (in Python): - Free attendance at this years Europython, as a guest of honour - A Europython T-shirt in a limited special edition - Fame and gratitude from conference attendees who get better scheduling The winner of the bounty is the person who scores most points, according to the criteria below. If we get more than one solution that does good optimisation, we will award more than one bounty. Here are the parameters: 1. There are 10 tracks with between 1 and 30 talks in each track. You may not schedule two talks in the same track against each other, unless there is more talks than available calendar time. 2. A track should be continuous. Each track that is continuous gives you 10 points. 3. We expect about 300 attendees. About half of them are expected to register their interests. Interests may range from a single talk to more than half of all the talks. You get one point for each talk an attendee can attend out of the ones the attendee has registered interest in. 4. Talks are of varying lengths. Lengths can be 30, 45, 60 and 90 minutes. The large majority of talks are 30 minutes. Only a very few are 45 minutes. 5. Rooms come in different sizes Room A has 180 seats Room B has 140 seats Room C has 140 seats Room D has 70 seats Room E has 70 seats Room A-D should be scheduled throughout the conference while room E is extra expansion space, only to be used when absolutely necessary. For every person scheduled above (Room capacity * (Number of responding attendees / Total number of attendees)) you get one point taken off your score. 6. There are a total of 10 90-minute time blocks. Day 1: 09:00 Day 1: 11:00 Day 1: 14:00 Day 1: 16:00 Day 2: 09:00 Day 2: 11:00 Day 2: 14:00 Day 2: 16:00 Day 3: 09:00 Day 3: 11:00 A track should not change room in the middle of a time block. Doing so reduces your score by 50 points. 7. Input data You get your input data in the form of a list of tuples; one tuple per talk. Each tuple looks like this: (talk id, talk length, track id, [list of interested attendees]) Talk length is an integer, all other items are strings. 8. Output data You should supply your output data in the form of a list of tuples; one tuple per talk. Each tuple should look like this: (talk id, room, day, starting time) Talk id should be the same as in the input. Room should be a one letter string with a value in the range A-E. Day should be a one letter string in the range 1-3. Starting time should be a string on the form HH:MM, in the 24 hour clock. Solutions should be sent by email to europython@python.org no later than 1 June 2005. Currently we haven't started gathering real data, but there should be some available for real world testing before 1 June. -- -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
BayPIGgies: May 19, 7:30pm (FIRST meeting at Google)
NOTE: we are no longer meeting at Stanford; the May meeting is at Google in Mountain View. The next meeting of BayPIGgies will be Thurs, May 19 at 7:30pm. NOTE: to celebrate our first meeting at Google, Google will be providing a buffet dinner starting at 6:45pm. Alex Martelli will be repeating his OSCON/PyCon presentations about OOP and design patterns -- with improvements! BayPIGgies meetings alternate between IronPort (San Bruno, California) and Google (Mountain View, California). For more information and directions, see http://www.baypiggies.net/ Advance notice: The June 9 meeting agenda has been set. Drew Perttula will be talking about his Python-based lighting system controller. Advance notice: The July 14 meeting agenda has not been set. Please send e-mail to [EMAIL PROTECTED] if you want to suggest an agenda (or volunteer to give a presentation). -- Aahz ([EMAIL PROTECTED]) * http://www.pythoncraft.com/ And if that makes me an elitist...I couldn't be happier. --JMS -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: pygame on win32, image.fromstring()
tlviewer wrote:
Next I'm going to load all 53 card resources into a list (array) of
strings, then write it out, pickled. That should smooth out loading the
game when I use 4-6 decks (Blackjack-21).
# -*- coding: cp1252 -*-
keywords: resource bitmap pickle
description: pickle resources from cards.dll
requires:
Pygame from www.pygame.org,
PIL from www.pythonware.com/products/pil/
WinXP out:
63 ioerror
64 ioerror
66 resource skipped
saving pickled list
closing
debugging Surface(71x96x8 SW) rect(0, 0, 71, 96)
# imports
import win32api as wi
import string as st
import pygame as gm
import Image as im
import StringIO
import win32con as wc
import os, sys
import pickle as pkl
# OS independent path -- win32 only
sysroot = os.environ.get('SYSTEMROOT')
# get module handle for cards DLL
hnd = wi.LoadLibrary(sysroot + '/system32/cards.dll')
Loadresource returns the card image without a header! I dumped these
header strings from ResourceHacker. There are only 2 kinds: one for the
pictures, and one for Ace+numbers.
# this header works for 71x96x1BPP image
pic_header = [ chr(0x42), chr(0x4D), chr(0xDE), chr(0x0D), chr(0x00), \
chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x4A), \
chr(0x00), chr(0x00), chr(0x00)]
num_header = [ chr(0x42), chr(0x4D), chr(0xA0), chr(0x04), chr(0x00), \
chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x20), \
chr(0x00), chr(0x00), chr(0x00)]
fname = 'pkl_deck.dat'
fname = os.curdir + '/' + fname
debugr=1
#init main array to hold the cards as strings
arr_cards=[]
def cards(fname):
#sheader = ''.join([ chr(header[x]) for x in range(len(header))])
if debugr!=0:
str = wi.LoadResource( hnd, 2, 1, 1033)
str = st.join(num_header,'') + str
fp = open( os.curdir + '/aceclub.bmp', wb)
fp.write( str)
fp.close ()
for i in range(1,68):
#default header (num)
#print fetch , i
header = num_header
if i % 13 10:
header = pic_header
try:
str = wi.LoadResource( hnd, wc.RT_BITMAP, i, 1033)
except:
print %d % i, resource skipped
continue
str = st.join(header,'') + str
try:
obj = im.open(StringIO.StringIO(str))
arr_cards.insert(i,obj.tostring())
except IOError:
print %d % i, ioerror
pass
wi.FreeLibrary(hnd)
#
# pickle out the list
print saving pickled list
fp = open(os.curdir + '/pkl_deck.dat', wb)
try:
pkl.dump( arr_cards, fp, 1) #binary size Win2k:312kB WinXP:445kB
except:
print errored, but still closing file
fp.close()
else:
print closing
fp.close()
#fp = open(e:/batch/msdn/Bitmap_11.bmp, rb)
## main ##
# retrieve the deck from our pickled list, or repickle the list to file
if not os.path.exists(fname):
cards(fname)
else:
fp = open(os.curdir + '/pkl_deck.dat','rb')
val=fp.read()
print pickled list len=,len(val)
fp.close
arr_cards=pkl.loads(val)
if debugr!=0:
img = gm.image.fromstring(arr_cards[11],(71,96),P)
print debugging,img, img.get_rect()
--
http://mail.python.org/mailman/listinfo/python-list
Re: A new to Python question
Bernd Nawothnig wrote: You're thinking you're passing the arguments as reference That is the way Fortran handles them: which is one of the things you really love when you link against underdocumented Fortran programs from C. (is that parameter a scalar or an array? crash! oh, an array. how many values does it expect? crash! oh, a few more, I suppose). /F -- http://mail.python.org/mailman/listinfo/python-list
Re: converting a set into a sorted list
Thank you for the pointer. I'll upgrade to 2.4. Best, Mack -- http://mail.python.org/mailman/listinfo/python-list
In search of prothon source
Since the DNS servers hosting prothon.org have stopped responding, the sole source of the source of prothon online that I can find has become inaccessable. I was wondering if anyone subscribed has a copy of the source for the last C version of prothon, and would be kind enough to post a copy online. Thanks, Alex -- http://mail.python.org/mailman/listinfo/python-list
Transparenz ist das Mindeste
Lese selbst: http://www.npd.de/npd_info/deutschland/2005/d0405-39.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Modifying a built-in function for logging purposes
On Sat, 14 May 2005 19:19:08 -0700, Robert Kern [EMAIL PROTECTED] wrote:
[EMAIL PROTECTED] wrote:
Hi Greg,
thank for your replay, but I didn't succeed in any way. You must
consider however that I'm not a Python expert...
IMHO, it must be a script that change part of the interpreter, and
substitute a new module (py) in the place of the standard one (py or
pyc). The standard module must be saved in order to be able to undo the
changes and go back to the normal behaviour.
The problem is that I don't know if the built-in functions like open
(or file) are written in Python or in C and, besides that, if they can
be modified.
Short answer: if you don't know stuff like this, then you probably
shouldn't mess around with the builtins in production code.
Depending on your operating system, there are probably programs that let
you list all of the files that have been opened on your system. For
example, on OS X, lsof(1) does the trick.
Other solutions which modify the source to be logged, are not
solutions, because it is far simpler to introduce here and there print
statements...
Playing with this a little:
logopen.py ---
import sys, time
class OpenLogger(object):
def __init__(self, logfile=sys.stdout):
self.logfile = logfile
self.old_open = __builtins__.open
def open(self, path, *mode):
openargs = ', '.join(map(repr, mode and [path, mode[0]] or [path]))
tt = time.time()
thdr = '%s.%02d' % (time.strftime('%Y-%m-%d %H:%M:%S',
time.localtime(tt)), int(tt*100)%100)
print self.logfile, '%s: open(%s) called from %r in %s line %s' %
((thdr, openargs) +
[(f.f_code.co_name, f.f_code.co_filename, f.f_lineno) for f in
[sys._getframe(1)]][0])
return self.old_open(path, *mode)
def on(self):
__builtins__.open = self.open
def off(self):
__builtins__.open = self.old_open
def main(*logfile):
logger = OpenLogger(*logfile)
try:
logger.on()
script_to_monitor = sys.argv[1]
sys.argv[0:] = sys.argv[1:]
xdict = dict(__builtins__=__builtins__, __name__='__main__')
execfile(script_to_monitor, xdict)
finally:
logger.off()
if __name__ == '__main__':
if not sys.argv[2:]: raise SystemExit,
Usage: [python] logopen.py [-log logfile] script_to_monitor
[script_to_monitor args]
logfile = sys.argv[1] == '-log' and sys.argv.pop(1) and
[open(sys.argv.pop(1), 'a')] or []
main(*logfile)
-
A script whose opens we can monitor, that opens a file from module and function
scope:
pnlines.py ---
import sys
print ' %r' % sys.argv[1]
for i, line in enumerate(open(sys.argv[1], 'r')):
print '%4s: %s' %(i+1, line.rstrip())
def foo(nlines=1):
for i, line in enumerate(open(sys.argv[1])):# test default 'r'
print '%4s: %s' %(i+1, line.rstrip())
if i+1 = nlines: break
print ' 3 lines of %r' % sys.argv[1]
foo(3)
-
Result (tested only as as far as you see here):
[ 0:23] C:\pywk\clpdel logopen.txt
Could Not Find C:\pywk\clp\logopen.txt
[ 0:23] C:\pywk\clppy24 logopen.py
Usage: [python] logopen.py [-log logfile] script_to_monitor
[script_to_monitor args]
Ok, so we pass pnlines.py as the file for it itself to print:
[ 0:23] C:\pywk\clppy24 logopen.py -log logopen.txt pnlines.py pnlines.py
'pnlines.py'
1: import sys
2: print ' %r' % sys.argv[1]
3: for i, line in enumerate(open(sys.argv[1], 'r')):
4: print '%4s: %s' %(i+1, line.rstrip())
5:
6: def foo(nlines=1):
7: for i, line in enumerate(open(sys.argv[1])):# test default 'r'
8: print '%4s: %s' %(i+1, line.rstrip())
9: if i+1 = nlines: break
10: print ' 3 lines of %r' % sys.argv[1]
11: foo(3)
12:
3 lines of 'pnlines.py'
1: import sys
2: print ' %r' % sys.argv[1]
3: for i, line in enumerate(open(sys.argv[1], 'r')):
[ 0:24] C:\pywk\clptype logopen.txt
2005-05-15 00:24:06.55: open('pnlines.py', 'r') called from '?' in pnlines.py
line 3
2005-05-15 00:24:06.55: open('pnlines.py') called from 'foo' in pnlines.py
line 7
Maybe the OP can build on this and contribute back something more useful and
tested ;-)
Regards,
Bengt Richter
--
http://mail.python.org/mailman/listinfo/python-list
Re: Question about extending the interperter
I've tried that and it worked. I've used Python to generate wrapper and it seems ok- I'm yet testing it, so far so good. thanks, Elie -- http://mail.python.org/mailman/listinfo/python-list
Re: converting a set into a sorted list
On Sat, 14 May 2005 19:20:24 -0700, Robert Kern [EMAIL PROTECTED] wrote: MackS wrote: Dear all, I've got several large sets in my program. After performing several operations on these I wish to present one set to the user [as a list] sorted according to a certain criterion. Is there any direct way to do so? Or must I list = [] for item in set1: list.append(item) list.sort() Can I somehow avoid doing this in two stages? Can I somehow avoid first creating a long list only to immediately sort it afterwards? In Python 2.4, In [1]:sorted? Type: builtin_function_or_method Base Class: type 'builtin_function_or_method' String Form:built-in function sorted Namespace: Python builtin Docstring: sorted(iterable, cmp=None, key=None, reverse=False) -- new sorted list That's plenty of information, but IMO key=None doesn't hint strongly enough about what you can do with it, so I'd advise reading about all the parameters ;-) Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about extending the interperter
Thanks for your answer, I've tried the way Fredrik suggested which pointed out to a solution. cheers -- http://mail.python.org/mailman/listinfo/python-list
pydoc for global variables
Hi, Is it possible to pydoc global variables also ? It just stucks them into the DATA section. Thanks, Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: A new to Python question
On Sun, 15 May 2005 08:00:47 +0200, Fredrik Lundh [EMAIL PROTECTED] wrote: M.E.Farmer wrote: I said exactly what I meant, the parentheses around the values creates a tuple that you have no reference to! repeating it doesn't make you right; no extra tuple is created, and the parens are part of the syntax: If the target is a target list enclosed in parentheses or in square brackets: The object must be a sequence with the same number of items as there are targets in the target list, and its items are assigned, from left to right, to the corresponding targets. http://docs.python.org/ref/assignment.html (originally, you had to use [] to unpack lists, and () or no parens only worked for tuples. the ability to use an arbitrary sequence was added in 1.5) Note that (x) without a comma doesn't unpack like [x] however: (x)= 123, x (123,) [x]= 123, x 123 (x,)= 123, x 123 x,= 123, x 123 Also, BTW, 123, (123,) [123,] [123] I.e., that last result is not [(123,)] There's actually a bunch of context-sensitive things about commas that you just have to get used to, in lists, tuples, function call arg lists, subscripts (__getitem__ args), unpacking assignment targets, etc. on the other hand, the function you're calling in this example *does* create a tuple that you have no reference to after the assignment. Yeah, but it would create that tuple whether there was an assignment of the returned result or not. Collecting unconnected facts in one breath remind me too much of political speeches ;-) that doesn't matter, of course, since the tuple is removed by the garbage collector immediately after it has been unpacked. I'm too tired to figure a humorous segue ;-) Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: Modifying a built-in function for logging purposes
On Sun, 15 May 2005 07:52:42 +0200, Fredrik Lundh [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: I wonder if it is possible to change (temporarily) a built-in function for logging purposes. Let me explain: I want to log all the 'open' operations, recording the file to be opened, the mode (r/w/a...) and (possibly) the module which made the call. import sys import __builtin__ # note: no plural s old_open = __builtin__.open def myopen(*args): code = sys._getframe(1).f_code print OPEN, args, FROM, code.co_name, IN, code.co_filename return old_open(*args) __builtin__.open = myopen this only handles file opens that goes via the open function, of course. to handle all opens, including internal operations (e.g. imports), you're probably better off using an external tool (e.g. strace, filemon, or some- thing similar). I should have mentioned that for my version of the same thing. I wonder what the chances are for a hook to catch all opens. My feeling is that file system access should be virtualized to look like a unix directory tree, with all manner of duck-typed file-system-like things mountable in the tree, and built-in open would refer to the open of a particular virtually mounted file system that might be configured to default as now. Anyway, lots of stuff would become possible... e.g., msys, the MinGW-related shell provides some of this capability, virtualizing windows partitions as /c/* /d/* and so forth, as well as having virtual mounts of various subdir trees. Good night... Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: Modifying a built-in function for logging purposes
Hi Robert,
Short answer: if you don't know stuff like this, then you probably
shouldn't mess around with the builtins in production code.
I begin to be fed up of beeing treated as a child who is only able to
make damages...
But this time you are right...
So let's change point of view: instead of trying to modify built-in
functions, it is better to write a small wrapper of the application you
want to log.
For example:
# app_wrapper.py
...insert here the excellent routine of Fredrik Lundh (thank you
Fredrik for your contribution!)
import app#name of the application to be logged.
In the test I carried on the answer was:
OPEN ('pippo2',) FROM ? IN /home/qwweeeit/app.py
OPEN ('pippo3', 'w') FROM ? IN /home/qwweeeit/app.py
OPEN ('pippolong', 'w') FROM ? IN /home/qwweeeit/app.py
I have not tested yet if multi-module applications answer in terms of
modules.
I must thank also Bengt Richter, also if his suggestion is far too
complicate for me...
Concerning his second replay and the virtualization of file system
access (or the usage of an external tool as suggested by Fredrik), I
leave the matter to the experts.
Bye.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Jesus said, I am the way, the truth and the life: no one can come to the Father(God)(in Heaven), but by me. (John 14:6) This means that if you die without trusting in Jesus Christ as your Lord and Saviour you will die in your sins and be forever sepa
hum a few bars and I'll try to pick it up [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] http://www.gotquestions.org/sinners-prayer.html I saw this site on a search directory. Great Resource! -- http://mail.python.org/mailman/listinfo/python-list
Re: Range function
Here's the Perl code.
--
#! perl
# http://xahlee.org/tree/tree.html
# Xah Lee, 2005-05
#_ Range _ _ _ _
=pod
BRange
Range($iMax) generates the list [1, 2, ... , $iMax].
Range($iMin, $iMax) generates the list [$iMin, ... , $iMax].
Range($iMin, $iMax, $iStep) uses increment $iStep, with the last
element in the result being less or equal to $iMax. $iStep cannot be 0.
If $iStep is negative, then the role of $iMin and $iMax are reversed.
If Range fails, 0 is returned.
Example:
Range(5); # returns [1,2,3,4,5]
Range(5,10); # returns [5,6,7,8,9,10]
Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]
Range( 5, -4, -2); # returns [5,3,1,-1,-3]
=cut
sub Range ($;$$) {
if (scalar @_ == 1) {return _rangeFullArgsWithErrorCheck(1,$_[0],1);};
if (scalar @_ == 2) {return
_rangeFullArgsWithErrorCheck($_[0],$_[1],1);};
if (scalar @_ == 3) {return
_rangeFullArgsWithErrorCheck($_[0],$_[1],$_[2]);};
};
sub _rangeFullArgsWithErrorCheck ($$$) {
my ($a1, $b1, $dx) = @_;
if ($dx == 0) {print Range: increment cannot be zero.; return 0}
elsif ($a1 == $b1) {return [$a1];}
elsif ( ((($b1 - $a1) 0) ($dx 0)) || ((($b1 - $a1) 0) ($dx
0)) ) {print Range: bad arguments. You have [$a1,$b1,$dx]; return
0;}
elsif ((($a1 $b1) ($b1 ($a1 + $dx))) || (($a1 $b1) ($b1
($a1 + $dx {return [$a1];}
else { return _rangeWithGoodArgs ($a1,$b1,$dx);};
};
sub _rangeWithGoodArgs ($$$) {
my ($a1, $b1, $dx) = @_;
my @result;
if ($a1 $b1) {for (my $i = $a1; $i = $b1; $i += $dx) { push
(@result, $i);}; }
else {for (my $i = $a1; $i = $b1; $i += $dx) { push (@result, $i);};
};
return [EMAIL PROTECTED];
};
#end Range
##
# test
use Data::Dumper;
print Dumper(Range(5,7,0.3));
--
http://mail.python.org/mailman/listinfo/python-list
Re: Range function
Here's the Python solution. -- # -*- coding: utf-8 -*- # Python # http://xahlee.org/tree/tree.html # Xah Lee, 2005-05 # implementation note: When iStep is a decimal, rounding error # accumulates. For example, the last item returned from # Range(0,18,0.3) is 17.7 not 18. A remedy is to turn iStep into a # fraction and do exact arithmetics, and possibly convert the result # back to decimal. A lesser workaround is to split the interval as to # do multiple smaller range and join them together. def Range(iMin, iMax=None, iStep=None): if (iMax==None and iStep==None): return Range(1,iMin) if iStep==None: return Range(iMin,iMax,1) if iMin = iMax and iStep 0: if (isinstance(iStep,int) or isinstance(iStep,long)): return range( iMix, iMax, iStep) else: result=[];temp=iStep while iMin = iMax: result.append(iMin) iMin += iStep return result # test print Range(0, 18, 0.3) -- http://mail.python.org/mailman/listinfo/python-list
Paranoider Deutschenmoerder kommt in Psychiatrie
Lese selbst: http://brandenburg.rz.fhtw-berlin.de/poetschke.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Desrtuctor WOES, was Advice on __del__
phil wrote: SO: without significant rewrite of each class such as triangle and line, how can I ensure those canvas lines get deleted? You don't really need to understand Canvas, just trust me I have to delete those objects and they are not properties of the class which go away with garbage collection. well, I think you're asking the wrong person: I wouldn't use a Canvas in the first place. instead, I'd update the screen based on the current contents of the data structure: http://effbot.org/zone/wck-3.htm (see the A Simple Canvas Widget example, and the Using the ui_doublebuffer flag modifications) /F -- http://mail.python.org/mailman/listinfo/python-list
mod_python and logging
Hi, I'm looking for a logging module to be used in a mod_python-powered website. Python 2.3's logging package seems like a good fit, however I'm not sure if it's completely safe to use it under high load. The library documentation states that it's thread-safe, but what about several forked apache processes running different (sub-)interpreters, logging to the same file? Other suggestions for logging (I really don't need most of logging.*'s facilities) are also welcome. Thanks, Daniel -- For mail replies please use my address from http://perplex.schmumpf.de/ http://www.gametective.de/ -- http://mail.python.org/mailman/listinfo/python-list
Multi-Kulturell = Multi-Kriminell
Lese selbst: http://www.npd.de/npd_info/meldungen/2005/m0105-19.html -- http://mail.python.org/mailman/listinfo/python-list
To circumvent the bug cp1252
Hi ! *** for information *** There is a bug in Python 2.4, worsened with the 2.4.1, for scripts, if they are: - large - with larges lines - prefixed (coded) with # -*- coding: cp1252 -*- - on windows (XP S2003) - perhaps, also, other conditions... This bug announces, wrongly, of the non-existent errors of syntax, blocks the generation of the programmable interface of the servers-COM, with Pywin, etc. But I found a means of circumventing the problem: it is enough to encoder scripts in utf-8, and to prefix them with # -*- coding: utf-8 -*- (with that, all the problems disappear) And, I can, finally, use version 2.4.1- Yeah ! @-salutations Michel Claveau -- http://mail.python.org/mailman/listinfo/python-list
Re: Modifying a built-in function for logging purposes
On Sat, 14 May 2005 15:14:01 -0700, qwweeeit wrote: Hi Greg, thank for your replay, but I didn't succeed in any way. You must consider however that I'm not a Python expert... Can you post what you did and what results you got? Because Greg's trick worked for me. See below. IMHO, it must be a script that change part of the interpreter, and substitute a new module (py) in the place of the standard one (py or pyc). The standard module must be saved in order to be able to undo the changes and go back to the normal behaviour. The problem is that I don't know if the built-in functions like open (or file) are written in Python or in C and, besides that, if they can be modified. Why do you think it matters if they are written in Python or C or any other language for that matter? Almost everything in Python is a first-class object. That means you can rebind functions, methods, classes, and any other object. You can't rebind statements like print. But open is just an object: py open type 'file' py print open(Something.txt, r).read() some text in a file py py save_open = open save_open type 'file' py py def open(pathname, mode): ... print The pathname is: + pathname ... print The mode is: + mode ... return save_open(pathname, mode) ... py contents = open(Something.txt, r).read() The pathname is: Something.txt The mode is: r py contents 'some text in a file' Other solutions which modify the source to be logged, are not solutions, because it is far simpler to introduce here and there print statements... Bye. Introducing print statements is good for quick-and-dirty debugging. For more serious work, you should investigate the debug module. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Schily ueber Deutschland
Lese selbst: http://www.heise.de/newsticker/meldung/59427 -- http://mail.python.org/mailman/listinfo/python-list
Re: what is the best way to determine system OS?
I did somethign that really seems far brighter... approaching it from a slightly different angle I just search through each line for the right field title, and then take that field's value from teh last line of output. Doesn't matter what OS, doesn't matter what format now. It can cope with it all. :-) Thanks for the advice! I learned a bunch. -- http://mail.python.org/mailman/listinfo/python-list
Re: Jesus said, I am the way, the truth and the life: no one can come to the Father(God)(in Heaven), but by me. (John 14:6) This means that if you die without trusting in Jesus Christ as your Lord and Saviour you will die in your sins and be forever sepa
In article [EMAIL PROTECTED], Bubba [EMAIL PROTECTED] wrote: I'm so glad you've decided what everyone believes Some of us don't. Believe that is. In anything in particular. MJRB -- http://mail.python.org/mailman/listinfo/python-list
string.lstrip stripping too much?
Hello, on windows python 2.4.1 I have the following problem s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona' print s D:\music\D\Daniel Lanois\For the beauty of Wynona t = 'D:\\music\\D\\' print t D:\music\D\ s.lstrip(t) 'aniel Lanois\\For the beauty of Wynona' why does lstrip strip the D of Daniel Lanois also? thanks in advance joram -- http://mail.python.org/mailman/listinfo/python-list
Re: Range function
Xah Lee wrote: Here's the Python solution. # implementation note: When iStep is a decimal, rounding error # accumulates. For example, the last item returned from # Range(0,18,0.3) is 17.7 not 18. A remedy is to turn iStep into a # fraction and do exact arithmetics, and possibly convert the result # back to decimal. A lesser workaround is to split the interval as to # do multiple smaller range and join them together. Good lord no! The correct way is to use an integer count and simply multiply it each time by the step, and add that to the range. No accumulation of errors then. Where did you learn to program? (Rhetorical question of course, as you haven't, yet.) def Range(iMin, iMax=None, iStep=None): if (iMax==None and iStep==None): return Range(1,iMin) if iStep==None: return Range(iMin,iMax,1) if iMin = iMax and iStep 0: if (isinstance(iStep,int) or isinstance(iStep,long)): return range( iMix, iMax, iStep) else: result=[];temp=iStep while iMin = iMax: result.append(iMin) iMin += iStep return result That's some of the worst Python code I've seen recently. Please, no one take this as representative of how decent Python programmers write code. -Peter -- http://mail.python.org/mailman/listinfo/python-list
RE: Turkish Tabloid Enrages Germany with Nazi Comparisons
Thank you for e-mailing [EMAIL PROTECTED] This is an auto generated message, please do not respond to this mail. Most questions regarding InterClient can be resolved by first visiting http://support.borland.com/. From this site you can create a free presales or installation case, find out how to contact Borland developer support if you have a question about using InterClient, or get information on posting to Borland's newsgroups - a free dynamic information source staffed by a set of dedicated volunteers. Other sources of information you may find of use are: http://qualitycentral.borland.com/ - is a Web Services based community collaboration system for problem reports and feature suggestions. http://codecentral.borland.com/ - is a repository of member submitted source code, projects, components, models, patterns, and more. http://bdn.borland.com/ - The Borland Developer Network -- http://mail.python.org/mailman/listinfo/python-list
X2Y 1.1.7 Document Processor Released!
X2Y is a flexible, configurable and extendable server-based document processing framework written in python. It has the following feaures: - Cross platform - Fully documented - Run as either a cron job, scheduled task or by hand - Fully configurable logging and notification - Fully configurable processing chains, including multiple seperate processing chains on a single server - Scriptable conversion plugins, inputs and outputs - Processors can be written in ANY language - Input from local file system, http get or imap folder supplied as standard - Output to local file system, http post or mail message supplied as standard - Supplied processors for EasyPDF and OpenOffice for document conversion Potential applications include server-side document conversion, virus scanning. We are particularly interested in hearing from anyone who develops new inputs, outputs and processors! For more information, please see: http://www.simplistix.co.uk/software/applications/x2y cheers, Chris -- Simplistix - Content Management, Zope Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Precision?
tiissa wrote: Steffen Glückselig wrote: 1.0 + 3.0 + 4.6 8.5996 Ehm, how could I get the intuitively 'correct' result of - say - 8.6? ;-) You may find annex B of the python tutorial an interesting read: http://docs.python.org/tut/node16.html Yes, the simplest way to get what you are expecting is probably: py print 1.0 + 3.0 + 4.6 8.6 The print statement calls str() instead of repr(). In many (most?) cases, this will print out what you expect it to. But you should be aware of floating-point representation issues, and you should definitely read the reference above. If you really do need precise decimal representation, you can use the 2.4 decimal.Decimal objects: py d.Decimal(1.0) + d.Decimal(3.0) + d.Decimal(4.6) Decimal(8.6) But if you just want a handy calculator, I'd go with print. STeVe -- http://mail.python.org/mailman/listinfo/python-list
Re: incorrect(?) shlex behaviour
Its gets worse: from shlex import StringIO from shlex import shlex t = shlex(StringIO(21)) while True: ... b = t.read_token() ... if not b: break ... print b ... 2 1--- where's the '' !? import shlex print shlex.split(21) ['21'] It strikes me that split should be behaving exactly the same way as read_token, but that may be a misunderstanding on my part of what split is doing. However, it is totally bizarre that read_token discards the '' symbol in the string! I don't know much about lexical analysis, but it strikes me that discarding characters is a bad thing. -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception question
Steven Bethard wrote: Ron Adam wrote: Do exceptions that take place get stored in a stack or list someplace? [snip] I know I can catch the error and store it myself with, except Exception, exc: or possibly, errlist = [] errlist.append(sys.exc_info()) But what I want to know is does the interpreter do that in any way? And if so, can I access it? No, but there's been some recent talk about having it do so: http://mail.python.org/pipermail/python-dev/2005-May/053672.html If that happens though, it's not likely to show up before Python 3.0. Too backwards incompatible to do now. It also seems that the exact semantics haven't yet been agreed upon. STeVe Thanks Steve, I had actually skimmed over those, but wasn't thinking of this at the time. I reread them. And it clears up a few things. I had read somewhere that exception objects were global, but that wasn't correct, after testing it, they appear to be part of the local frame. So once a function exits, any exceptions objects that happened inside the function are no longer retrievable. And checking exception ID's to see if any new exceptions occurred doesn't work either, as the numbers get reused too frequently in a short period. Conclusion: Exceptions need to be logged or handled as they occur. Cheers, _Ron -- http://mail.python.org/mailman/listinfo/python-list
Re: Faster GUI text control
Fredrik Lundh wrote: none @bag.python.org wrote: no, it would mean writing some python code. if all you need is a scrolling text list, you can simply use the code on this page: http://effbot.org/zone/wck-4.htm (see A scrollable list view, with scrollbar support and, optionally, the virtual data modifications under Displaying Huge Data Sets) the resulting widget will update at constant speed, independent of the data size. /F Thanks for the suggestion. I looked at that, but I need to be able to selectively change colors on parts of the text and I didn't think I could do that with a list box. Am I misunderstanding that? yes. the list view isn't a listbox, it's a new widget. with the list view, you control the drawing yourself, and can draw things in whatever way you want. (the section Non-Standard Rendering talks about this; reading http://effbot.org/zone/wck-3.htm also helps). /F Thanks for the clarification. I'm going to go back and read the Writing widgets articles in detail. -- http://mail.python.org/mailman/listinfo/python-list
Error when calling the metaclass bases function() argument 1 must be code, not str
I use python 2.4.1 and PIL 1.1.5 and when I execute my program I got
error:
./code.py
Traceback (most recent call last):
File ./code.py, line 7, in ?
class DrawPlus(ImageDraw.Draw):
TypeError: Error when calling the metaclass bases
function() argument 1 must be code, not str
Why I got this error? It work good on python 2.3 + PIL 1.1.4
#!/usr/bin/env python
# -*- coding: iso8859-1 -*-
import random
import Image, ImageFont, ImageDraw
class DrawPlus(ImageDraw.Draw):
def __init__(self, im, mode=None):
ImageDraw.Draw.__init__(self, im, mode=None)
def text(self, xy, text, fill=None, font=None, angle=None,
anchor=None):
ink, fill = self._getink(fill)
if font is None:
font = self.getfont()
if ink is None:
ink = fill
if ink is not None:
bitmap = font.getmask(text)
if angle is not None:
bitmap = bitmap.rotate(angle, Image.BILINEAR)
self.draw.draw_bitmap(xy, bitmap, ink)
class ImageRandomCode:
def __init__(self, filename, size=None):
# plain text code
self.code = ''
# code image file name
self.filename = filename
# fonts
import glob
dir = 'fonts/*.ttf'
self.fonts = glob.glob(dir)
# chars tuple
#self.chars = chars or
('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z')
self.chars = ('0','1','2','3','4','5','6','7','8','9')
# image width
self.img_width = 100
# image height
self.img_height = 30
# image size = (image width, image height)
self.img_size = size or (self.img_width, self.img_height)
# image background color (r,g,b)
self.img_background_color = (255, 255, 255)
# image font color (r,g,b)
self.img_font_color = (0, 0, 0)
# code length
self.length = 5
# minimum font size
self.font_size_min = 13 # 12
# maximum font size
self.font_size_max = 18
# maximum noise lines to draw
self.lines_noise_max = 3
# maximum noise pixels to draw
self.pixels_noise_percent = 3 # 5
# maximum char angle
self.angle_max = 15 # 20
img = Image.new('RGB', self.img_size, self.img_background_color)
self.draw = DrawPlus(img)
self.draw_chars()
self.draw_noise()
del self.draw
img.save(self.filename)
def draw_noise(self):
self.draw_noise_pixels()
self.draw_noise_lines()
def get_code(self):
return self.code
def get_filename(self):
return self.filename
def draw_chars(self, chars=None, length=None):
chars = chars or self.chars
length = length or self.length
for i in range(length):
font_size = random.randint(self.font_size_min, self.font_size_max)
font_name = random.choice(self.fonts)
font = ImageFont.truetype(font_name, font_size)
angle = random.randint(-self.angle_max, +self.angle_max)
text = random.choice(chars)
size = self.draw.textsize(text, font=font)
x = i*(self.img_width-2-2)/length
y = random.randint(2, self.img_height-size[1]-2)
self.draw.text((x,y), text, font=font, angle=angle,
fill=self.img_font_color)
self.code += text
def draw_noise_pixels(self, percent=None):
percent = percent or self.pixels_noise_percent
N = int(self.img_width*self.img_height*percent/100)
for i in range(N):
x = random.randint(0, self.img_width)
y = random.randint(0, self.img_height)
self.draw.point((x,y), fill=self.img_font_color)
for i in range(N):
x = random.randint(0, self.img_width)
y = random.randint(0, self.img_height)
self.draw.point((x,y), fill=self.img_background_color)
def draw_noise_lines(self, max=None):
max = max or self.lines_noise_max
N = random.randint(0, max)
for i in range(N):
x1 = random.randint(0, self.img_width)
y1 = random.randint(0, self.img_height)
x2 = random.randint(0, self.img_width)
y2 = random.randint(0, self.img_height)
self.draw.line((x1,y1,x2,y2), fill=(0,0,0))
code = ImageRandomCode('test.png')
print code.get_code()
--
http://mail.python.org/mailman/listinfo/python-list
Re: Mandrake 10.1 and Python 2.3.4
Hi Joal, I can only tell you that in my Linux Mandrake 10.1 (Community Edition), all is ok: Python 2.3.4 (#2, Aug 19 2004, 15:49:40) [GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2 Type help, copyright, credits or license for more information. import site dir (site) ['_Helper', '_Printer', '__builtin__', '__builtins__', '__doc__', '__file__', '__name__', '_dirs_in_sys_path', '_init_pathinfo', '_test', 'addpackage', 'addsitedir', 'encoding', 'here', 'makepath', 'os', 'prefixes', 'sitedirs', 'sys'] This can't exclude that the error is in Mandrake's site (if you have the Official Edition), but I can't help you further because I am not an expert. Bye. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unique Elements in a List
On 5/9/05, James Stroud [EMAIL PROTECTED] wrote: Is there an easy way to grab the Unique elements from a list? from sets import Set as set data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9] for x in set(data): ... print x ... 0.5 0.9 0.6 0.4 0.1 .Facundo Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Does anybody know the status of PyCon recordings?
On 9 May 2005 11:02:27 -0700, Sébastien Boisgérault [EMAIL PROTECTED] wrote: http://www.pycon.org/talks/ ¿?: Site Error An error was encountered while publishing this resource. Debugging Notice Zope has encountered a problem publishing your object. The object at http://www.pycon.org/talks/index_html has an empty or missing docstring. Objects must have a docstring to be published. .Facundo Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ -- http://mail.python.org/mailman/listinfo/python-list
Re: mod_python and logging
Hi Daniel, look at the thread I started (Modifying a built-in function for logging purposes). http://groups.google.it/group/comp.lang.python/messages/56e905ff27462d91,8f431d9da6140849,95368b6d5db3237d,f1aa51de9139a751,79d9ad3b78f1b875,a7a68e017f064eca,1c203ffc19cdeaac,3e31db7958bffbf1,0889cc903a62266f?hl=itthread_id=bd3b300a4d880820mode=threadnoheader=1_done=%2Fgroup%2Fcomp.lang.python%2Fbrowse_frm%2Fthread%2Fbd3b300a4d880820%2F1c203ffc19cdeaac%3Fhl%3Dit%26#doc_56e905ff27462d91 There you can find another approach to logging (limited, but specific) and you can appreciate the point of view of various experts (I am not one of them!). Bye. -- http://mail.python.org/mailman/listinfo/python-list
Re: incorrect(?) shlex behaviour
bill wrote: Its gets worse: from shlex import StringIO from shlex import shlex t = shlex(StringIO(21)) while True: ... b = t.read_token() ... if not b: break ... print b ... 2 1--- where's the '' !? import shlex print shlex.split(21) ['21'] It strikes me that split should be behaving exactly the same way as read_token, but that may be a misunderstanding on my part of what split is doing. However, it is totally bizarre that read_token discards the '' symbol in the string! I don't know much about lexical analysis, but it strikes me that discarding characters is a bad thing. From the docs: split(s[, comments]) Split the string s using shell-like syntax. If comments is False (the default), the parsing of comments in the given string will be disabled (setting the commenters member of the shlex instance to the empty string). This function operates in POSIX mode. New in version 2.3. Maybe looking at string methods split might help. $(which sh).split() ['($(which', 'sh)'] From the docs: read_token() Read a raw token. Ignore the pushback stack, and do not interpret source requests. (This is not ordinarily a useful entry point, and is documented here only for the sake of completeness.) # Just like in my first post from StringIO import StringIO from shlex import shlex t = shlex(StringIO(21)) t.get_token() '2' t.get_token() '' t.get_token() '' t.get_token() '1' t.get_token() '' # Your way t = shlex(StringIO(21)) t.read_token() '2' t.read_token() '' t.read_token() '1' t.read_token() '' Hth, M.E.Farmer -- http://mail.python.org/mailman/listinfo/python-list
Re: Range function
the previous posted solutions are badly botched. Here's a better solution. Any further correction will appear on the website instead. (http://xahlee.org/tree/tree.html) Similar change needs to be made for the Perl code... Java code will come tomorror. By the way, the code from me are not expected to be exemplary. These are exercises for all, also as a intro to functional programing to industry programers. Also, later on there will be non-trivial problems. # -*- coding: utf-8 -*- # Python # http://xahlee.org/tree/tree.html # Xah Lee, 2005-05 import math; def Range(iMin, iMax=None, iStep=None): if (iMax==None and iStep==None): return Range(1,iMin) if iStep==None: return Range(iMin,iMax,1) if iMin = iMax and iStep 0: if (isinstance(iStep,int) or isinstance(iStep,long)): return range( iMin, iMax+1, iStep) else: result=[] for i in range(int(math.floor((iMax-iMin)/iStep))+1): result.append( iMin+i*iStep) return result if iMin = iMax and iStep 0: if (isinstance(iStep,int) or isinstance(iStep,long)): return range( iMin, iMax-1, iStep) else: result=[] for i in range(int(math.floor((iMin-iMax)/-iStep))+1): result.append( iMin+i*iStep) return result # raise error about bad argument. To be added later. # test print Range(5,-4,-2) # Thanks to Peter Hansen for a correction. Xah [EMAIL PROTECTED] http://xahlee.org/ -- http://mail.python.org/mailman/listinfo/python-list
Calling C/C++ not contained inside a .dll
Hello, I really appreciate anyone who has time to read this and help, Thanks up front. I'm very new to python, having picked it up for the first time a week ago, but I feel I'm very close to getting this working. Here's what I'm trying to do: - call python scripts from game code - have those called scripts call functions that are back in game code The first part looks easy enough to do if I use, ppembed or something. The second part has been driving me nuts, because I thought I had a solution and now I just feel defeated. I've gotten SWIG working and built a .dll extension with functions in it to be loaded from python and communicate with my game. I've successfully imported it into a python interpreter and called functions in it. The problem is I haven't figured out how to make those calls call functions in my game application. If I load the same .dll from my game and pass in a structure full of function pointers, the communication from the game to the .dll works... but then the module I am using in the python interpreter is not the same one, as if its a copy. My question is.. How do I get python scripts to call functions in my game code without having to build a .dll that has the entire meat of my game inside of it? Ultimately I want to be able to load scripts from my game and have those scripts call functions in my game code. Example: - game calls script's onDamage function - script sets various variables, and then calls swapModel function in game Thanks, Joe -- http://mail.python.org/mailman/listinfo/python-list
Re: A new to Python question
No. You claimed quote This will only create a tuple in memory /quote That is not what I said please do not edit my words and call it a quote! But we just learned that this is not the case. Yes it seems I was proven wrong and have learned much from the discussion ;) That is why I am here to learn from others and help if I can ( sometimes I am just plain wrong and I get the help ) Reduced to this argument I have no objection. Glad to hear it. Lisp is far from being ugly ;-) Your words not mine.I never said it was ugly. Lisp is beautiful but Python isn't Lisp, and the () *are* getting overloaded. M.E.Farmer -- http://mail.python.org/mailman/listinfo/python-list
Re: A new to Python question
Fredrik and Bengt: Thank you for the time. I will study the docs and play with the shell till this is firm. M.E.Farmer -- http://mail.python.org/mailman/listinfo/python-list
Re: A new to Python question
It looks like the docs could use some examples of the various assignments it refers to. I think something like Bengt posted would be a nice addition if it included assignments with slices and dicts too. Just a thought. M.E.Farmer -- http://mail.python.org/mailman/listinfo/python-list
Re: Is isinstance always considered harmful?
Jordan Rastrick [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I've read arguments, here and elsewhere, to the effect that in Python isinstance should be avoided like the plague, except in a few very specific and narrow circumstances. Putting it like this is rather extreme. Roughly speaking, due in part to Python's dynamic nature its better to concern yourself only with the interface an object provides, and not whether it happens to inherit from a given base class. To my mind, your example of using isinstance to select a better (such as speedier) subalgorithm for a special case is not just fine, but good programming. (Selecting a subalgorithm that works more robustly is also a good reason for special casing.) It is an internal matter whose externally visible effect is to improve performance. Using isinstance to unnecessarily narrow the domain is quite different. It has the externally visible effect of degrading performance (to a nullity) for arguments that the user might reasonably want to work. Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: string.lstrip stripping too much?
On Sun, 15 May 2005 15:24:25 +0200, joram gemma [EMAIL PROTECTED] wrote: Hello, on windows python 2.4.1 I have the following problem s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona' print s D:\music\D\Daniel Lanois\For the beauty of Wynona t = 'D:\\music\\D\\' print t D:\music\D\ s.lstrip(t) 'aniel Lanois\\For the beauty of Wynona' why does lstrip strip the D of Daniel Lanois also? Because the lstrip argument is a set of characters in the form of a string, not a single substring to replace from the left. Note: (repeating your example to start with) s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona' print s D:\music\D\Daniel Lanois\For the beauty of Wynona t = 'D:\\music\\D\\' print t D:\music\D\ s.lstrip(t) 'aniel Lanois\\For the beauty of Wynona' Now we make an equivalent lstrip argument from your t argument t2 = ''.join(sorted(set(t))) print t2 :D\cimsu Note that there is only one of each character in t2 (e.g. 'D' and '\\') And the result is the same for t and t2: s.lstrip(t) 'aniel Lanois\\For the beauty of Wynona' s.lstrip(t2) 'aniel Lanois\\For the beauty of Wynona' If you want to replace an exact prefix, a regex could be a simple way to get the startswith check and replace in one whack. Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: Mandrake 10.1 and Python 2.3.4
Joal Heagney [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] 'import site' failed; traceback: Traceback (most recent call last): File /usr/lib/python2.3/site.py, line 169, in ? sys.lib, AttributeError: 'module' object has no attribute 'lib' Right: the sys module usually has no .lib attribute that I know of import sys; sys.lib Traceback (most recent call last): File stdin, line 1, in ? AttributeError: 'module' object has no attribute 'lib' Is this a Mandrake or a Python mistake? It is a site.py code mistake, but who wrote your copy of site.py? And does anyone know how to fix it? Correct or remove the offending line (169) Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: string.lstrip stripping too much?
why does lstrip strip the D of Daniel Lanois also? Because it does just what the Lib Ref doc on str.lstrip says that it does. help(str.lstrip) # should also explain Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Precision?
tiissa wrote: Steffen Glückselig wrote: 1.0 + 3.0 + 4.6 8.5996 Ehm, how could I get the intuitively 'correct' result of - say - 8.6? ;-) You may find annex B of the python tutorial an interesting read: http://docs.python.org/tut/node16.html In addition to what you find in the above link, the round function can be used. p = 1 #digits of precision after decimal a, b, c = 1.0, 3.05, 4.6 print round(a+b+c,p) - 8.6 You also have the option to use the print statements '%' operator to format the output. a, b, c = 1.0, 3.05, 4.6 print %.1f%(a+b+c) - 8.6 _Ron -- http://mail.python.org/mailman/listinfo/python-list
Re: Is isinstance always considered harmful?
Jordan Rastrick wrote: Say you're writing, in Python, the extend() method for a Linked List version of python's builtin list. Its really important to know what kind of iterable youre being passed in - because if its another Linked list, and you know it, you can connect the two in 0(1) time; whereas any other arbitrary iterable is going to take 0(n), as you're just going to have to append the items one by one. Is this a case where use of isinstance, to see exactly what kind of Iterable you have, can be justified? def extend(self, elems): if isinstance(elems, LinkedList): # Point last to first else: for elem in elems: self.append(elem) Regardless of the various issues surrounding isinstance(), you have a difference in functionality. Since you're just storing a reference in the case of another LinkedList instead of copying it, mutating the LinkedList will be different from mutating another iterable type which has been passed to extend: linkedlist1 = LinkedList() list1 = [1, 2, 3] linkedlist2 = LinkedList([4, 5, 6]) linkedlist1.extend(list1) linkedlist1.extend(linkedlist2) linkedlist1 LinkedList([1, 2, 3, 4, 5, 6]) list1.append(4) linkedlist1 # Notice how there's still only one 4 LinkedList([1, 2, 3, 4, 5, 6]) linkedlist2.append(7) linkedlist1 # Notice how there's now a 7 LinkedList([1, 2, 3, 4, 5, 6, 7]) -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie : checking semantics
[EMAIL PROTECTED] wrote: snip 2. Trust me (and other Python programmers most likely would agree) this type of error happens much more seldom then newbies (especially coming from strongly typed languages) imagine while adjusting to the language. 3. Python advantages overpower drawbacks 10 to 1. 4. Most likely you never used Fortran :) The Newbie is outnumbered on this issue in comp.lang.python, but he is not alone :). In Fortran 77 and earlier versions, many run-time errors resulted from (1) misspelling a variable name, since variable declarations were not required and IMPLICIT NONE (forcing declarations) was standardized only in Fortran 90. (2) passing variables of the wrong type (real instead of double precision, scalar instead of array, etc.) to a procedure -- this could not be checked at compile-time if the procedure and caller were compiled separately and then linked. Fortran 90 added MODULEs, partly to fix this. I programmed in Fortran 77 for years before using Fortran 90 and find that in the latter version I am more productive, since a program that compiled was much more likely to be correct. I think many Fortranners concur. ANSI C 89 provides for more static type checking than the original KR C, and I think most C programmers appreciate this. Looking at how other programming languages evolved, based on hard-won experience, Python looks like a move in the opposite direction -- less compile-time checking. -- http://mail.python.org/mailman/listinfo/python-list
wxPython and a Control Property Editor
Hi, I'm building a modest GUI editor for myself using wxPython, and I need some help. I want to create a nice 'Control Property Editing Window', just like VisualBasic, Delphi, Visual C++, etc. After searching for a while, I found an interesting extension for wx that does exactly this (and very nicely too), but its written in c++ and unavailable in python. I'm not interested in modifying the source to be compatible with python, so unfortunately that extension is no longer an option. I tried searching the demo's of wxPython for something useful, and I figured the Grid control could be somewhat useful (wx.Grid using a custom Table, with non-string data). The problems with the Grid are - - no option to collapse rows (tree-like) - can't define different data type (choice, number, ...) for each row After also looking at other GUI editor scripts out there, like wxWidgets, I turn to this group for some help. Any help would be greatly appreciated. Thanks. -- http://mail.python.org/mailman/listinfo/python-list
[no subject]
__ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Quick Reference from module doc strings.
I think this deserves a little more of a description than I gave it
initially.
The routine in the previous message does a little more than just print
out __doc__ strings. It outputs a formatted alphabetical list of objects
in a module with each objects, name, class or type, and then tries to
determine if the doc string is part of the class or was inherited from a
parent class. If the object is a storage type, then it will print the
objects contents/values giving you what they are at import time. If the
string or list, tuple, or dict is large, it will print just the
beginning with '..' at the end to let you know there is more.
So what you get is a printable alphabetical quick reference guide with
the first level class's, functions, exceptions, and attributes with the
initial values after importing. (You can also do this with a single
class and get it's methods and attributes.)
Here is the first part of __builtins__ (Python 2.3) as an example. If
anyone has any suggestions or corrections, Please let me know.
Cheers,
_Ron Adam
__builtins__
Class:type 'module'
Built-in functions, exceptions, and other objects.
Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices.
__builtins__.__debug__
Class:type 'bool'
__builtins__.__debug__=True
__builtins__.__doc__
Class:type 'str'
__builtins__.__doc__=Built-in functions, exceptions, and other objects.
Noteworthy: None is the `nil' object; Ellipsis represents `...' in
slices.
__builtins__.__import__
Module:__builtin__
Class:type 'builtin_function_or_method'
__import__(name, globals, locals, fromlist) - module
Import a module. The globals are only used to determine the context;
they are not modified. The locals are currently unused. The fromlist
should be a list of names to emulate ``from name import ...'', or an
empty list to emulate ``import name''.
When importing a module from a package, note that __import__('A.B', ...)
returns package A when fromlist is empty, but its submodule B when
fromlist is not empty.
__builtins__.__name__
Class:type 'str'
__builtins__.__name__=__builtin__
__builtins__.abs
Module:__builtin__
Class:type 'builtin_function_or_method'
abs(number) - number
Return the absolute value of the argument.
__builtins__.apply
Module:__builtin__
Class:type 'builtin_function_or_method'
apply(object[, args[, kwargs]]) - value
Call a callable object with positional arguments taken from the tuple args,
and keyword arguments taken from the optional dictionary kwargs.
Note that classes are callable, as are instances with a __call__() method.
Deprecated since release 2.3. Instead, use the extended call syntax:
function(*args, **keywords).
__builtins__.ArithmeticError
Module:exceptions
Type:type 'classobj'
Base class for arithmetic errors.
__builtins__.AssertionError
Module:exceptions
Type:type 'classobj'
Assertion failed.
__builtins__.AttributeError
Module:exceptions
Type:type 'classobj'
Attribute not found.
__builtins__.basestring
Module:__builtin__
Class:type 'type'
Type basestring cannot be instantiated; it is the base for str and unicode.
__builtins__.bool
Module:__builtin__
Class:type 'type'
bool(x) - bool
Returns True when the argument x is true, False otherwise.
The builtins True and False are the only two instances of the class bool.
The class bool is a subclass of the class int, and cannot be subclassed.
__builtins__.buffer
Module:__builtin__
Class:type 'type'
buffer(object [, offset[, size]])
Create a new buffer object which references the given object.
The buffer will reference a slice of the target object from the
start of the object (or at the specified offset). The slice will
extend to the end of the target object (or with the specified size).
Continued.
And here is the program again.
def getobjs(object, dlist=[], lvl=0, maxlevel=1):
Retreive a list of sub objects from an object.
if object not in dlist:
dlist.append(object)
if lvlmaxlevel:
dobj = dir(eval(object))
for item in dobj:
try:
dlist = getobjs(object+'.'+item, dlist, lvl+1)
except:
pass
return dlist
def printdoc(objectlist):
Return a sorted printable quick reference
guide from a list of objects.
outtext = []
objectlist.sort(lambda x, y: cmp(x.lower(), y.lower()))
for obj in objectlist:
Sober-Q
Paul Rubin wrote: Bernd Nawothnig [EMAIL PROTECTED] writes: On 2005-05-15, [EMAIL PROTECTED] [allegedly] wrote: ... I don't think that post was really from MAL. It seems to be a sporgery attack on the newsgroup. Sigh. The spam mails stem from a Sober variant, which sends Nazi propaganda around. Kay -- http://mail.python.org/mailman/listinfo/python-list
Re: Mandrake 10.1 and Python 2.3.4
[EMAIL PROTECTED] wrote: Hi Joal, I can only tell you that in my Linux Mandrake 10.1 (Community Edition), all is ok: Python 2.3.4 (#2, Aug 19 2004, 15:49:40) [GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2 Type help, copyright, credits or license for more information. import site dir (site) ['_Helper', '_Printer', '__builtin__', '__builtins__', '__doc__', '__file__', '__name__', '_dirs_in_sys_path', '_init_pathinfo', '_test', 'addpackage', 'addsitedir', 'encoding', 'here', 'makepath', 'os', 'prefixes', 'sitedirs', 'sys'] This can't exclude that the error is in Mandrake's site (if you have the Official Edition), but I can't help you further because I am not an expert. Bye. Likewise, 10.1 official (powerpack) is OK: [EMAIL PROTECTED] steve]$ cat /proc/version Linux version 2.6.8.1-12mdk ([EMAIL PROTECTED]) (gcc version 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)) #1 Fri Oct 1 12:53:41 CEST 2004 [EMAIL PROTECTED] steve]$ python Python 2.3.4 (#2, Aug 19 2004, 15:49:40) [GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2 Type help, copyright, credits or license for more information. import sys dir(sys) ['__displayhook__', '__doc__', '__excepthook__', '__name__', '__stderr__', '__stdin__', '__stdout__', '_getframe', 'api_version', 'arch', 'argv', 'builtin_module_names', 'byteorder', 'call_tracing', 'callstats', 'copyright', 'displayhook', 'exc_clear', 'exc_info', 'exc_type', 'excepthook', 'exec_prefix', 'executable', 'exit', 'getcheckinterval', 'getdefaultencoding', 'getdlopenflags', 'getfilesystemencoding', 'getrecursionlimit', 'getrefcount', 'hexversion', 'last_traceback', 'last_type', 'last_value', 'lib', 'maxint', 'maxunicode', 'meta_path', 'modules', 'path', 'path_hooks', 'path_importer_cache', 'platform', 'prefix', 'ps1', 'ps2', 'setcheckinterval', 'setdlopenflags', 'setprofile', 'setrecursionlimit', 'settrace', 'stderr', 'stdin', 'stdout', 'version', 'version_info', 'warnoptions'] Perhaps you should uninstall and reinstall python, in case a file is corrupt. Steve -- http://mail.python.org/mailman/listinfo/python-list
Re: Precision?
If you want to do decimal arithmetic, use the decimal module which is new in Python 2.4. Python 2.4 (#1, Jan 22 2005, 20:45:18) [GCC 3.3.3 20040412 (Red Hat Linux 3.3.3-7)] on linux2 Type help, copyright, credits or license for more information. from decimal import Decimal as D D(1.0) + D(3.0) + D(4.6) Decimal(8.6) when you write '4.6', you get a binary floating-point number which is not equal to the decimal number 4.6. 4.6 4.5996 4.6 == D(4.6) False Jeff pgpTCJaVo6X1e.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: Precision?
Steffen Glckselig [EMAIL PROTECTED] writes: Hello, I've just wanted to check Python's abilities as a calculator and this is what came out: 1.0 + 3.0 + 4.6 8.5996 Ehm, how could I get the intuitively 'correct' result of - say - 8.6? ;-) This is as correct as your computer's FPU can made it :) -- http://www.peter.dembinski.prv.pl -- http://mail.python.org/mailman/listinfo/python-list
Re: string.lstrip stripping too much?
joram gemma wrote: on windows python 2.4.1 I have the following problem s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona' print s D:\music\D\Daniel Lanois\For the beauty of Wynona t = 'D:\\music\\D\\' print t D:\music\D\ s.lstrip(t) 'aniel Lanois\\For the beauty of Wynona' why does lstrip strip the D of Daniel Lanois also? because you told it to do that? help(str.lstrip) Help on method_descriptor: lstrip(...) S.lstrip([chars]) - string or unicode Return a copy of the string S with leading whitespace removed. If chars is given and not None, remove characters in chars instead. If chars is unicode, S will be converted to unicode before stripping (chars is a set of characters, not a prefix. the string D:\\music\\D\\ contains a D, obviously. to strip off a prefix, use s[len(prefix):]) /F -- http://mail.python.org/mailman/listinfo/python-list
RE: Is isinstance always considered harmful?
Jordan Rastrick wrote: Subject: Is isinstance always considered harmful? Say you're writing, in Python, the extend() method for a Linked List version of python's builtin list. Its really important to know what kind of iterable youre being passed in - because if its another Linked list, and you know it, you can connect the two in 0(1) time; whereas any other arbitrary iterable is going to take 0(n), as you're just going to have to append the items one by one. Is this a case where use of isinstance, to see exactly what kind of Iterable you have, can be justified? I'd say so, definitely. There are other solutions I can think of - perhaps the least hideous is factoring out the 0(1), point last to first code in a separated method, __linkedExtend() or something, and then do something similar to the above by using an exception, like this: def extend(self, elems): try: self.__linkedExtend(elems) catch NotALinkedListError: for elem in elems: self.append(elem) I dont know, I don't really like this (although it is more BAFP than the first version, so maybe that makes it more Pythonic?). You've decided to special-case a binary operation based on the type of *both* objects. Whether you use isinstance or __linkedExtend, you're still providing a single-dispatch mechanism, which gets uglier in proportion to the number of types involved. Meh. I'd go with isinstance for now. Your use case is exactly why it's in the language, IMO. If the number of types you're special-casing becomes unwieldy, you might be interested in multiple-dispatch approaches (cf http://gnosis.cx/publish/programming/charming_python_b12.html) and generic functions (cf http://dirtsimple.org/2004/11/generic-functions-have-landed.html). Robert Brewer System Architect Amor Ministries [EMAIL PROTECTED] To me, instanceof seems like the infimum of all possible evils in this case. It'd be nice if I'd seen the source code for Python's builtin list to see if any of these kind of considerations are taken into account there (ultra fast array copying in C when extend is called on another list, perhaps)? Luckily, one of the great gifts of Python is I can indeed look at the source for the entire langauge at any time I want. So I'm going to go read it (my first time, how exciting!), and in the meantime, I'll let replies start accumulating froma whole lot of people who are a lot smarter and more experience in Python than myself :) Several-weeks-in-and-still-liking-Python-better-than-any-other -previously-learned-language-ly yours, Jordan Rastrick -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Importing and namespace visibility
As an application programmer, I'm not well versed in the material aspects of computing (memory, cpu, bus and all). My understanding of imports in Python is such: the __main__ program is the center piece which holds the programs reference: globals, functions, classes, modules etc. The objects of this file (functions and classes) are directly accessible; 'import suchModule' s objects are attainable through the *qualified name* (module.function); the 'from suchModule import *' the objects are directly attainable. A recent msg from F. Lundh http://groups.google.ca/group/comp.lang.python/browse_frm/thread/f9bf9734fa19eee9/8a51ab24748251d8?q=rnum=12hl=en#8a51ab24748251d8 suggested being careful with recursive importing... BUT, of all this I thought that if you import module1, then module2 (into __main__), objects from module1 would be available to objects of module2 which came (into memory space) after module1 was loaded. This does not seem to be the case, and module2 requires an 'import module1' statement in its own file to see this last module's objects. This is not the recursive situation that was a pitfall Fredrik was evoking. What am I missing here??? The reason I'm asking is to setup team development, using Tkinter, where different people will be programming diverse sections to be 'packed' into the main interface... Thanks for any help in understanding what is happening in this situation, JMD -- http://mail.python.org/mailman/listinfo/python-list
Re: Quick Reference from module doc strings.
Ron Adam wrote: Does anyone have suggestions on how to improve this further? Not functionally (from me, yet). However if you can bear a stylistic comment, do read on :-) elif (isinstance(object,str) or isinstance(object,int) or isinstance(object,bool) or isinstance(object,tuple) or isinstance(object,list) or isinstance(object,dict)): Since Python version 2.2, the 2nd arg of isinstance may be a tuple. You could define this up front, with a meaningful name: TYPES_WHICH_whatever = (str, int, bool, etc etc) Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Mandrake 10.1 and Python 2.3.4
Joal Heagney wrote: Hi everyone. I've been getting this error message in python, and it's really driving me up the wall. [EMAIL PROTECTED] joal]$ python 'import site' failed; use -v for traceback Python 2.3.4 (#1, Apr 18 2005, 19:03:06) [GCC 3.4.1] on linux2 Type help, copyright, credits or license for more information. Here's the relevant line when i run python in verbose mode: 'import site' failed; traceback: Traceback (most recent call last): File /usr/lib/python2.3/site.py, line 169, in ? sys.lib, AttributeError: 'module' object has no attribute 'lib' Is this a Mandrake or a Python mistake? And does anyone know how to fix it? I think this is the reason why I'm getting errors when it comes to importing other python packages. I have both python 2.3.4 and 2.4.1 installed on Mandrake 10.1 - and only 2.4.1 gives the error. So - have you tried to install python 2.4 recently? Also, are you using a pythonrc.py startup file which is trying to import the sys module? Have a look to see if a PYTHONSTARTUP environment variable has been set to the path of such a file. HTH John Ridley ___ How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
RE: Property,how to use it?
[EMAIL PROTECTED] wrote: What is the property mean in the python? Who can explain it for me? I don't know how to use it. http://www.catb.org/~esr/faqs/smart-questions.html Tim Delaney -- http://mail.python.org/mailman/listinfo/python-list
Resizing VListBox on parent (wxPython)
I hava a hierarhical sizer layout in which there's a panel in the upper part of a window with some buttons, and another panel with wxVListBox that's meant to occupy all the remaining space in the window. Both panels are put inside a vertical BoxSizer, and the VListBox in its panel is also in BoxSizer. The hierarchy is like this: - window, vertical BoxSizer - panel, horizontal BoxSizer - some buttons - panel, vertical BoxSizer - a single VListBox (the VListBox is alone in its panel for future compatibility - I plan to add more controls to the panel) I want the lower panel and the VListBox to automatically resize and fill all the remaining space in the window. I can get this to work in the horizontal direction by default, but not in vertical. When I set the vertical size of VListBox to -1, it only displays one line; I can set it to a fixed vertical size, but I really need it to adapt its size to that of the window (something like Center layout option in Java BorderLayout). (The items in VListBox are generated at program runtime, and are not available during window controls creation stage) Can somebody explain why is this happening and how to do what I want? I have almost no experience in wxWindows. -- http://mail.python.org/mailman/listinfo/python-list
thread title's getting shorter...
. -- http://mail.python.org/mailman/listinfo/python-list
python-dev Summary for 2005-04-16 through 2005-04-30
[The HTML version of this Summary is available at http://www.python.org/dev/summary/2005-04-16_2005-04-30.html] == Summary Announcements == --- Exploding heads --- After a gentle introduction for our first summary, python-dev really let loose last fortnight; not only with the massive PEP 340 discussion, but also more spin-offs than a `popular`_ `TV`_ `series`_, and a few stand-alone threads. Nearly a week into May, and the PEP 340 talk shows no sign of abating; this is unfortunate, since Steve's head may explode if he has to write anything more about anonymous blocks. Just as well there are three of us! This summary has ended up rather late (we're starting summarising May, already). I have to admit that this is all my (Tony's) fault - we got a draft done nicely on time, and then a week of really good thesis writing distracted me and I neglected to send this out. My apologies, and I promise to try harder in future! .. _popular: http://imdb.com/title/tt0060028/ .. _TV: http://imdb.com/title/tt0098844/ .. _series: http://imdb.com/title/tt0247082/ [TAM] --- PEP 340 --- A request for anonymous blocks by Shannon -jj Behrens launched a massive discussion about a variety of related ideas. This discussion is split into different sections for the sake of readability, but as the sections are extracted from basically the same discussion, it may be easiest to read them in the following order: 1. `Localized Namespaces`_ 2. `The Control Flow Management Problem`_ 3. `Block Decorators`_ 4. `PEP 310 Updates Requested`_ 5. `Sharing Namespaces`_ 6. `PEP 340 Proposed`_ [SJB] = Summaries = Localized Namespaces Initially, the anonymous blocks discussion focused on introducing statement-local namespaces as a replacement for lambda expressions. This would have allowed localizing function definitions to a single namespace, e.g.:: foo = property(get_foo) where: def get_foo(self): ... where get_foo is only accessible within the ``foo = ...`` assignment statement. However, this proposal seemed mainly to be motivated by a desire to avoid namespace pollution, an issue which Guido felt was not really that much of a problem. Contributing threads: - `anonymous blocks http://mail.python.org/pipermail/python-dev/2005-April/052717.html`__ [SJB] --- The Control Flow Management Problem --- Guido suggested that if new syntax were to be introduced for anonymous blocks, it should address the more important problem of being able to extract common patterns of control flow. A very typical example of such a problem, and thus one of the recurring examples in the thread, is that of a typical acquire/release pattern, e.g.:: lock.acquire() try: CODE finally: lock.release() Guido was hoping that syntactic sugar and an appropriate definition of locking() could allow such code to be written as:: locking(lock): CODE where locking() would factor out the acquire(), try/finally and release(). For such code to work properly, ``CODE`` would have to execute in the enclosing namespace, so it could not easily be converted into a def-statement. Some of the suggested solutions to this problem: - `Block Decorators`_ - `PEP 310 Updates Requested`_ - `Sharing Namespaces`_ - `PEP 340 Proposed`_ Contributing threads: - `anonymous blocks http://mail.python.org/pipermail/python-dev/2005-April/052717.html`__ [SJB] Block Decorators One of the first solutions to `The Control Flow Management Problem`_ was block decorators. Block decorators were functions that accepted a block object (also referred to in the thread as a thunk), defined a particular control flow, and inserted calls to the block object at the appropriate points in the control flow. Block objects would have been much like function objects, in that they encapsulated a sequence of statements, except that they would have had no local namespace; names would have been looked up in their enclosing function. Block decorators would have wrapped sequences of statements in much the same way as function decorators wrap functions today. Block decorators would have allowed locking() to be written as:: def locking(lock): def block_deco(block): lock.acquire() try: block() finally: lock.release() return block_deco and invoked as:: @locking(lock): CODE The implementation of block objects would have been somewhat complicated if a block object was a first class object and could be passed to other functions. This would have required all variables used in a block object to be cells (which provide slower access than normal name lookup). Additionally, first class block objects, as a type of
MacOS X drag drop?
Hi there, this might not be the right group to ask, but I'm looking for some hints on making a drag droppable application on MacOS X. I succeeded in producing a bundle that calls a python script. When I drop a file onto the application, the python script is called with the following arguments, ['/Users/hanwen/src/maclily/BUILD/lilypond.app/Contents/MacOS/lilypond', '-psn_0_3145729'] how can I find the path to the dropped file from -psn_0_3145729 ? Or is this signaled to the script through a different channel? Thanks! -- Han-Wen Nienhuys - [EMAIL PROTECTED] - http://www.xs4all.nl/~hanwen -- http://mail.python.org/mailman/listinfo/python-list
RE: An example in point 2
From: [EMAIL PROTECTED] Subject: RE: An example in point 2 Date: May 15, 2005 8:35:01 PM EDT To: [EMAIL PROTECTED]I guess Python is just a cover for this list. Since the holly rollers can post whatever they want, now the survivalists are chiming in also. Yet Python content with some harmless vernacular gets kicked. No point in feeding the idiots that post this garbage so maybe we (as in interested in Python) should start sending it all to you.From: [EMAIL PROTECTED]Date: May 15, 2005 7:33:38 PM EDTTo: python-list@python.orgSubject: The world is really unstable these days..We've got a lot to deal with these days. Terrorism, Recession, blah, blah, blahAn example in point. You let the holly rollers clutter up the list, but this little test message gets blocked. Very inconsiderate and inconsistent of you. If you can block this then you can block all the holly roller garbage. From: [EMAIL PROTECTED] Subject: Re: Jesus said, "..." Date: May 15, 2005 1:52:43 PM EDT To: python-list@python.orgThe annoying thing about this junk mail is if one receives just a digest (otherwise the junk mail filter cans it). Funny how one perfectly innocent word can hold up a post for review, but this sort of thing gets through every timeLee C-- http://mail.python.org/mailman/listinfo/python-list
Re: Quick Reference from module doc strings.
John Machin wrote: Ron Adam wrote: Does anyone have suggestions on how to improve this further? Not functionally (from me, yet). However if you can bear a stylistic comment, do read on :-) elif (isinstance(object,str) or isinstance(object,int) or isinstance(object,bool) or isinstance(object,tuple) or isinstance(object,list) or isinstance(object,dict)): Since Python version 2.2, the 2nd arg of isinstance may be a tuple. You could define this up front, with a meaningful name: TYPES_WHICH_whatever = (str, int, bool, etc etc) Cheers, John Actually I'm begging for comments, it's the beginning of a project not the end. So thanks! ;-) I changed it to: if type(object)==str: elif type(object) in (str,int,bool,tuple,list,dict): Thanks, I don't need the isinstance(), type works here just as well. What would it take to make it useful? I'm thinking of putting it to use in a database where you can get quickly get info by subject and keywords, not just by module. I'm also thinking of using it to generate web pages. As far as the actual content of doc strings for each item, we can submit requests for improvements where it's needed. Cheers, _Ron -- http://mail.python.org/mailman/listinfo/python-list
Re: The world is really unstable these days......
snip Don't change eventually while you're climbing through a light pumpkin. If the open clouds can play wrongly, the lean elbow may call more bedrooms. He can help believably, unless Wail teases farmers throughout Wednesday's enigma. She wants to join good tyrants about Allan's sign. Occasionally Marion will love the pool, and if Mohammar bimonthly excuses it too, the code will seek inside the elder college. Yesterday, cats recommend among strong doorways, unless they're distant. Don't try to attack the floors fully, order them amazingly. Hardly any tags will be strange smart boats. Let's creep around the polite rooms, but don't sow the handsome figs. Y'know, I really do love these random word spam messages. They're quite entertaining to read. -- -- Lucas Raab lvraab@earthlink.net dotpyFE@gmail.com AIM:Phoenix11890 MSN:dotpyfe @ gmail.com IRC:lvraab ICQ:324767918 Yahoo: Phoenix11890 -- http://mail.python.org/mailman/listinfo/python-list
Re: deleting the terminal prompt?
Thanks, Dennis, that solved it. Cheers Mack Dennis Lee Bieber wrote: On 15 May 2005 16:32:57 -0700, MackS [EMAIL PROTECTED] declaimed the following in comp.lang.python: while cmd != : sys.stdout.write(prompt: ) cmd = raw_input() # at this point it studies the contents of cmd and decides what to do next. However, if the user simply presses Tab followed by a backspace s/he effectively makes the prompt disappear. Is there a way to prevent this from happening? What behavior does... while cmd != : cmd = raw_input(prompt: ) ... give you? -- == [EMAIL PROTECTED] | Wulfraed Dennis Lee Bieber KD6MOG [EMAIL PROTECTED] | Bestiaria Support Staff == Home Page: http://www.dm.net/~wulfraed/ Overflow Page: http://wlfraed.home.netcom.com/ -- http://mail.python.org/mailman/listinfo/python-list
PIGIP Meeting -- Python Interest Group In Princeton
PIGIP, the Python Interest Group In Princeton, NJ, USA will have a meeting Monday night at 7 (May 15) in the Lawrenceville, NJ library. No formal topic is set tonight, but we will be reviewing some bits of the standard library that are highlighted in the Python Tutorial. Anyone with an interest in the Python language are encouraged to attend, and no RSVP is required and there is no charge is required or expected for attendence. You can read more about PIGIP at http://www.pigip.org. -- Jon R. Fox -- [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: MacOS X drag drop?
Take a look at Platypus at http://sveinbjorn.sytes.net/platypus. It will make it easier for you. -- http://mail.python.org/mailman/listinfo/python-list
Re: thread title's getting shorter...
Johnny Gentile [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] . ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Property,how to use it?
Delaney, Timothy C (Timothy) wrote: [EMAIL PROTECTED] wrote: What is the property mean in the python? Who can explain it for me? I don't know how to use it. http://www.catb.org/~esr/faqs/smart-questions.html Or he can just learn to use Google: http://www.google.com/search?q=python+properties -Peter -- http://mail.python.org/mailman/listinfo/python-list
German spam event [was: Re: Schily ueber Deutschland]
[Paul Rubin] I don't think that post was really from MAL. It seems to be a sporgery attack on the newsgroup. Sigh. For the last two days, I receive quite an amount of robotic rejects, after my name was used as the forged From: for an apparently massive spam invoice written in German. At the same time, I noticed an increase of German-written spam filtering through a few lists I'm subscribed to, and the Python list among others. Such forged From appears all the time as far as I am concerned, and had for years now. But something significant happened this weekend. -- François Pinard http://pinard.progiciels-bpi.ca -- http://mail.python.org/mailman/listinfo/python-list
RE: The world is really unstable these days......
Peter Hansen wrote: Lucas Raab wrote: snip [...] Y'know, I really do love these random word spam messages. They're quite entertaining to read. Although, when posting in reply to them it apparently helps those who read this through the mailing list, and who have Bayesian filtering of spam happening, if you would snip the entire content. Otherwise it can confuse the spam blockers since they have your name generally associated with useful messages (I presume ;-) ) instead of with spam. You're messin' with their statistics, man! ;-) Absolutely. Another example of where these things can mess with Spambayes is people replying to XL and correcting his horrendous troll-posts. It makes it really hard for Spambayes to determine that *anything* coming from XL is spam. Tim Delaney -- http://mail.python.org/mailman/listinfo/python-list
Re: Is isinstance always considered harmful?
On Sun, 15 May 2005 14:31:21 -0400, Terry Reedy [EMAIL PROTECTED] wrote: Jordan Rastrick [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I've read arguments, here and elsewhere, to the effect that in Python isinstance should be avoided like the plague, except in a few very specific and narrow circumstances. Putting it like this is rather extreme. Roughly speaking, due in part to Python's dynamic nature its better to concern yourself only with the interface an object provides, and not whether it happens to inherit from a given base class. To my mind, your example of using isinstance to select a better (such as speedier) subalgorithm for a special case is not just fine, but good programming. (Selecting a subalgorithm that works more robustly is also a good reason for special casing.) It is an internal matter whose externally visible effect is to improve performance. I agree, but I am also a little uncomfortable about such performance tuning, unless the assumptions it depends on are prominently documented or even validated with an assert or explicit warning. Otherwise the next version of the interpreter or a library module could change the optimal decision, and a bad optimization decision could be locked in for the new version. Maybe there should be another testable condition like __debug__ except for testing (e.g. __testing__ ;-) which could be used to introduce temporary alternative code (such as alternate optimization decisions) so that system tests could be used to validate locking in one decision or another for a new system version being tested. For trivial personally maintained code, a one-line version check with a reminder exception to re-visit the optimization or whatever decision (and revise the version check for next time) could cheaply prevent hidden lock-in of bad optimization etc. Using isinstance to unnecessarily narrow the domain is quite different. It has the externally visible effect of degrading performance (to a nullity) for arguments that the user might reasonably want to work. Agreed, but the key thing there is to define unnecessarily ;-) Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: problem uploading ZIP file tp PyPI
John Machin wrote: Sorry in advance if this is not the correct forum ... Quite. The support link for PyPI is in the sidebar of the site. I'm trying to upload what appears to be a perfectly OK zip file as a source file type to PyPI, and am getting this response: Error... There's been a problem with your request exceptions.ValueError: invalid distribution file The *only* valid (perfectly OK) source file to upload is a Source Distribution as generated by the sdist setup.py command. I have managed to upload a Windows installer, and downloaded it again [but the download count is still stuck on zero]. The download counts are updated daily (IIRC). Richard -- http://mail.python.org/mailman/listinfo/python-list
Re: [Docutils-develop] Re: Have you tried eric3 ?
Nicola Larosa wrote: I've recently discovered Eric3, a development environment dedicated to python, and I'm really impressed ! Up to now I'd been using kdevelop for my projects involving python but I always felt unsatisfied with it. ... Let me know your thoughts about this nice app ! Web page: http://www.die-offenbachs.de/detlev/eric3.html Screenshots: http://www.die-offenbachs.de/detlev/eric3-screenshots.html I've been using Eric3 for quite a while now. I tried it years ago, but it did only supported .py files in the project, and that was not enough. Then I used Leo, not your run-of-the-mill IDE, but a very capable outliner meant for literate programming, implemented with Python and Tkinter. It too had a few idiosyncrasies, so I tried Eric3 again, that in the meanwhile had gotten support for .ptl files. It was enough for me, so I switched. Eric3 is a more traditional, quite featureful IDE, and its Python implementation is very clean. I was able to fix a couple minor problems, and the patches were accepted into the source, much to my rejoicing. Recently I resumed using Leo, but for other stuff. For Python programming I am sticking to Eric3. I have not gotten around to use its featureful support for version control, still using the command line for that, and the wonderful Meld for porting between trunk and branches. A suggestion: the View menu has two very useful folding commands, Toggle all folds and Toggle current fold. They are much more usable with keyboard shortcuts, so define them. I use Alt+A and Alt+C. A third command would be useful, to open only the first level folds (to open all classes but keep the method closed), but it looks like the underlying Scintilla editor does not support this. (In Leo you can instantly open the outline at one of ten different nesting level.) If you haven't tried Wing IDE I'd encourage you to take a look. I've tried most debugging packages, and Wing is to my mind the most usable. Further, they have a liberal policy with regard to open source projects, making the cost extremely reasonable if you aren't using the software for commercial development but do use it to develop and support open source works. regards Steve -- Steve Holden+1 703 861 4237 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ Python Web Programming http://pydish.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: thread title's getting shorter...
On Sunday 15 May 2005 06:17 pm, Rolland rolland1 wrote: Johnny Gentile [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] . ? Another instance of the extremely clever low content body email, AKA the LCBE. Let us bask in the cleverness, shall we? Boy that's clever! I can't get over how clever that is. Let's all just simultaneously acknowledge that the the author of the LCBE has proved his vast intellectual superiority by omitting content from the body, leaving others to wonder exactly what he meant. To the LCBE author, these people should wonder, as they are not smart enough to know that he really meant nothing except to make people wonder. Very Clever! What is even more clever is that the author of the LCBE is now making hundreds of people make a Johnny Gentile filter. Wow, I'm so impressed with this level of cleverness. Now, if the LCBE author will go take a crap on some canvas, we can call it art. How clever, indeed! Clever, clever, clever, clever, clever. W. Clever. (And Stupid.) Dear LCBE author, please go fuck yourself. James -- James Stroud UCLA-DOE Institute for Genomics and Proteomics Box 951570 Los Angeles, CA 90095 http://www.jamesstroud.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Range function
On 15 May 2005 02:50:38 -0700, Xah Lee [EMAIL PROTECTED] wrote:
Here's the Perl code.
Where did you learn to program? Its highly unlikely that a Perl
programer would ever write a range function as there is a built in
Perl function that does the same thing. If your intent is purely
accedemic then the first thing you should do is learn Perl to a much
higher grade.
#! perl
# http://xahlee.org/tree/tree.html
# Xah Lee, 2005-05
#_ Range _ _ _ _
=pod
BRange
Its considered poor style to have function names with capital
letters. The normal convention is to use all lower case.
Range($iMax) generates the list [1, 2, ... , $iMax].
Range($iMin, $iMax) generates the list [$iMin, ... , $iMax].
Range($iMin, $iMax, $iStep) uses increment $iStep, with the last
element in the result being less or equal to $iMax. $iStep cannot be 0.
If $iStep is negative, then the role of $iMin and $iMax are reversed.
If Range fails, 0 is returned.
Example:
Range(5); # returns [1,2,3,4,5]
Range(5,10); # returns [5,6,7,8,9,10]
Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]
Range( 5, -4, -2); # returns [5,3,1,-1,-3]
=cut
sub range {
return [1..$_[0]] if (@_==1);
return [$_[0]..$_[1]] if (@_==2);
my $lowest= shift;
my $greatest = shift;
my $increment = shift;
my $steps = ($greatest - $lowest)/$increment;
my @return= map { $_ * $increment + $lowest } (0..$steps);
return [EMAIL PROTECTED];
}
This does as you wish but it far shorter and I would argue easyer for
the typical perl programer to read.
sub Range ($;$$) {
if (scalar @_ == 1) {return _rangeFullArgsWithErrorCheck(1,$_[0],1);};
if (scalar @_ == 2) {return
_rangeFullArgsWithErrorCheck($_[0],$_[1],1);};
if (scalar @_ == 3) {return
_rangeFullArgsWithErrorCheck($_[0],$_[1],$_[2]);};
};
I would suggest that If you have the case where your doing a one line
if stament then you should make use of the line modifing verent of
if. Also since if produces a scalar context its not needed.
sub Range ($;$$) {
return _rangeFullArgsWithErrorCheck(1,$_[0],1) if (@_ == 1);
return _rangeFullArgsWithErrorCheck($_[0],$_[1],1) if (@_ == 2);
return _rangeFullArgsWithErrorCheck($_[0],$_[1],$_[2]) if (@_ == 3);
}
See how much neater and more readable the code is after doing that.
sub _rangeFullArgsWithErrorCheck ($$$) {
my ($a1, $b1, $dx) = @_;
if ($dx == 0) {print Range: increment cannot be zero.; return 0}
elsif ($a1 == $b1) {return [$a1];}
elsif ( ((($b1 - $a1) 0) ($dx 0)) || ((($b1 - $a1) 0) ($dx
0)) ) {print Range: bad arguments. You have [$a1,$b1,$dx]; return
0;}
elsif ((($a1 $b1) ($b1 ($a1 + $dx))) || (($a1 $b1) ($b1
($a1 + $dx {return [$a1];}
else { return _rangeWithGoodArgs ($a1,$b1,$dx);};
};
This would be a great place to make use of die. Throwing an exection for an
error.
sub _rangeFullArgsWithErrorCheck ($$$) {
my ($a1, $b1, $dx) = @_;
die Range: increment cannot be zero. unless $dx;
return [$a1] if ($a1 == $b1);
if ( ((($b1 - $a1) 0) ($dx 0))
||
((($b1 - $a1) 0) ($dx0))) {
die Range: bad arguments. You have [$a1,$b1,$dx];
}
}
sub _rangeWithGoodArgs ($$$) {
my ($a1, $b1, $dx) = @_;
my @result;
if ($a1 $b1) {for (my $i = $a1; $i = $b1; $i += $dx) { push
(@result, $i);}; }
else {for (my $i = $a1; $i = $b1; $i += $dx) { push (@result, $i);};
};
return [EMAIL PROTECTED];
};
Personally I don't like the c style while loop. I didn't like it in C
and I don't like it in perl.
--
Please excuse my spelling as I suffer from agraphia. See
http://dformosa.zeta.org.au/~dformosa/Spelling.html to find out more.
Free the Memes.
--
http://mail.python.org/mailman/listinfo/python-list
Re: problem uploading ZIP file tp PyPI
richard wrote: John Machin wrote: Sorry in advance if this is not the correct forum ... Quite. The support link for PyPI is in the sidebar of the site. Tried that, when I was trying to register and getting strange error messages about the user name, like John Machin and John_Machin were not ascii [it finally permitted sjmachin]. The response volume could not be likened to that of a fire-hose. I'm trying to upload what appears to be a perfectly OK zip file as a source file type to PyPI, and am getting this response: Error... There's been a problem with your request exceptions.ValueError: invalid distribution file The *only* valid (perfectly OK) source file to upload is a Source Distribution as generated by the sdist setup.py command. Which is precisely how the file in question was generated: setup.py sdist --format=zip -- http://mail.python.org/mailman/listinfo/python-list
Re: 20050111: list basics
On 12 Jan 2005 08:22:04 GMT, Abigail [EMAIL PROTECTED] wrote: [...] Wrong. Perl functions don't take memory addresses. Perl doesn't allow the programmer to do direct memory access. Perl's pack function will allow you to do direct memory access if you ask it to via the p and P templates. -- Please excuse my spelling as I suffer from agraphia. See http://dformosa.zeta.org.au/~dformosa/Spelling.html to find out more. Free the Memes. -- http://mail.python.org/mailman/listinfo/python-list
BLT with TCL/TK 8.4.9 and Python 2.4
Has anyone acheived this? Regards, Ken -- http://mail.python.org/mailman/listinfo/python-list
question about the id()
HI ALL: Can someone explain why the id() return the same value, and why these values are changing? Thanks you. Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. class A(object): ... def f(): ... pass ... def g(): ... pass ... a=A() id(a.f) 11365872 id(a.g) 11365872 class B(object): ... def f(): ... print 1 ... def g(): ... print 3 ... b=B() id(b.f) 11365872 id(b.g) 11365872 id(a.f), id(a.g), id(b.f), id(b.g) (11365872, 11365872, 11365872, 11365872) a.f is a.g False id(a.f), id(a.g), id(b.f), id(b.g) (11492408, 11492408, 11492408, 11492408) a.f is a.g False id(a.f), id(a.g), id(b.f), id(b.g) (11365872, 11365872, 11365872, 11365872) -- http://mail.python.org/mailman/listinfo/python-list
Re: BLT with TCL/TK 8.4.9 and Python 2.4
Kenneth Miller wrote: Has anyone acheived this? There is no reason why Tkinter couldn't load BLT (from the Tcl side). You could wrap it up into a Tkinter-style widget, or just drive it through lower level evals. -- Jeff Hobbs, The Tcl Guy http://www.ActiveState.com/, a division of Sophos -- http://mail.python.org/mailman/listinfo/python-list
Brad Pahlke is out of the office.
I will be out of the office starting 05/11/2005 and will not return until 05/17/2005. I will respond to your message when I return. -- http://mail.python.org/mailman/listinfo/python-list
Re: question about the id()
kyo Can someone explain why the id() return the same value, and why kyo these values are changing? Instance methods are created on-the-fly. In your example the memory associated with the a.f bound method (not the same as the unbound method A.f) is freed before you reference a.g. That chunk of memory just happens to get reused for the bound method associated with a.g. Here's a demonstration: % python Python 2.5a0 (#77, May 14 2005, 14:47:06) [GCC 3.3 20030304 (Apple Computer, Inc. build 1671)] on darwin Type help, copyright, credits or license for more information. class A(object): ... def f(): pass ... def g(): pass ... a = A() x = a.f y = a.g id(x) 17969240 id(y) 17969440 id(a.f) 17969400 id(a.g) 17969400 Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Precision?
On 5/15/05, Ron Adam [EMAIL PROTECTED] wrote: x 321.61 Here the error has been kept to a minimum. In most cases, it isn't a problem, but it is something to be aware of. It does matter in banking and I beleive there are standard ways of dealing with it. Yes, use Decimal: http://docs.python.org/lib/module-decimal.html Remember that you can also use it in Python 2.3.x: http://www.taniquetil.com.ar/facundo/bdvfiles/get_decimal.html .Facundo Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ -- http://mail.python.org/mailman/listinfo/python-list
RE: question about the id()
HI Skip: I want to check is there any change in the instance 's methods. a=A() a2=A() a.f == a2.f False a.f is a2.f False a.f is a.f False If the instance methods are create on-the-fly, how to do that? Thanks. Kyo -Original Message- From: Skip Montanaro [mailto:[EMAIL PROTECTED] Sent: Monday, May 16, 2005 11:09 AM To: kyo guan Cc: python-list@python.org Subject: Re: question about the id() kyo Can someone explain why the id() return the same value, and why kyo these values are changing? Instance methods are created on-the-fly. In your example the memory associated with the a.f bound method (not the same as the unbound method A.f) is freed before you reference a.g. That chunk of memory just happens to get reused for the bound method associated with a.g. Here's a demonstration: % python Python 2.5a0 (#77, May 14 2005, 14:47:06) [GCC 3.3 20030304 (Apple Computer, Inc. build 1671)] on darwin Type help, copyright, credits or license for more information. class A(object): ... def f(): pass ... def g(): pass ... a = A() x = a.f y = a.g id(x) 17969240 id(y) 17969440 id(a.f) 17969400 id(a.g) 17969400 Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Quick Reference from module doc strings.
Ron Adam wrote: John Machin wrote: Ron Adam wrote: Does anyone have suggestions on how to improve this further? Not functionally (from me, yet). However if you can bear a stylistic comment, do read on :-) elif (isinstance(object,str) or isinstance(object,int) or isinstance(object,bool) or isinstance(object,tuple) or isinstance(object,list) or isinstance(object,dict)): Since Python version 2.2, the 2nd arg of isinstance may be a tuple. You could define this up front, with a meaningful name: TYPES_WHICH_whatever = (str, int, bool, etc etc) Actually I'm begging for comments, it's the beginning of a project not the end. So thanks! ;-) I changed it to: if type(object)==str: elif type(object) in (str,int,bool,tuple,list,dict): Althought object is a horrible name for your own value (there is a builtin object which you use for defining new-style classes), you probably want: if isinstance(object, (str,int,bool,tuple,list,dict)): ... or (as John Machin was trying to suggest): if isinstance(object, TYPES_WHICH_whatever): ... This allows you to use instances of those builtin types and any user-defined subtypes. Thanks, I don't need the isinstance(), type works here just as well. But the isinstance version is better than the type(...) in ... version. --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Amy Redding/Tucson/IBM is out of the office.
I will be out of the office starting 05/12/2005 and will not return until 05/16/2005. I am out of the office until Mon. May 16 For assistance see Said Lamri x2374 -- http://mail.python.org/mailman/listinfo/python-list
PythonWin + Tkinter = broken relation with WindowsXP !?!?!
I read that Tkinter and Python IDEs (PythonWin and Idle at least) makes for a bad mix in execution mode because they're fighting for the event loop, but this mode is usefull to use the debugger. But to the point of breaking something elsewhere than in memory ??? (Shutting down and rebooting the computer doesn't resolve the problems... PythonWin becomes impossible to use if another window is open (pdf files, winAmp music, browser et al...) is this documented somewhere??? It's been happening quite a few times to me (real bummer!). NOTE: This situation seems to appear slowly... Not like a works or doesn't work situation but rather that corruption is progressive. This is a complete mystery to me Thanks in advance, JMD Python 2.3.5, WinXP Pro SP2 I've started using Python Scripter, which seems less problematic (at this point) -- http://mail.python.org/mailman/listinfo/python-list
