🌐 Mailman 3 June 2008 - Python-list - python.org

SPOJ, Problem Code: sumtrian, Reducing time taken to solve.
by Shriphani June 1, 2008

June 1, 2008

Hi, I was trying to solve the sumtrian problem in the SPOJ problem set ( https://www.spoj.pl/problems/SUMTRIAN/ ) and this is the solution I submitted: http://pastebin.ca/1035867 The result was, "Your solution from 2008-06-01 15:13:06 to problem SUMTRIAN, written in Python, has exceeded the allowed time limit." I suspect that the first portion of my solution which looks at the input, figures out the number of triangles and forms a list that contains lists containing each row of the triangle, is wrong. I am not too sure how to optimize it. I would appreciate help. Thanks, Shriphani Palakodety

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Printing a text file using Python
by Robin Lee June 1, 2008

June 1, 2008

Serge: in your code i believe that you did one read of your whole input file, and then you emitted that to the dc with textout. textout's use is actually (x,y,string). hence one line got printed (actually the whole file got printed but truncated!!!!) you will have to detect all the end of lines and loop a whole lot of dc.textouts Robin your code: dc = win32ui.CreateDC() dc.CreatePrinterDC() dc.SetMapMode(4) # This is UI_MM_LOENGLISH # With this map mode, 12 points is 12*100/72 units = 16 font = win32ui.CreateFont({'name' : 'Arial', 'height' : 16}) dc.SelectObject(font) f=open("./Reports/Report.txt","r") memory=f.read() f.close memory.split('\n') dc.StartDoc("./Reports/Report.txt") dc.StartPage() dc.TextOut(10,10,memory) dc.EndPage() dc.EndDoc()

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pyspread 0.0.7
by Martin Manns June 1, 2008

June 1, 2008

pyspread 0.0.7 has been released. -- New features: + CSV import dialog with preview grid Bug fixes: + setup.py now installs correctly into a sub-folder (tested for Linux and WinXP). -- About: pyspread is a spreadsheet that accepts a pure python expression in each cell. -- Highlights: + No non-python syntax add-ons + Access to python modules from cells + 3D grid + Numpy object array for representation of string entry into grid cell + Numpy object array for representation of eval function array + Cell access via slicing of numpy function array + X, Y, and Z yield current cell location for relative reference Requires: Python >=2.4, Numpy 1.0.4, and wxPython 2.8.7.1. License: GPL Project page: http://pyspread.sourceforge.net Best Regards Martin

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the pipe reading in Thread dose not work.
by Leon zhang June 1, 2008

June 1, 2008

#!/usr/bin/env python # -*- coding: utf-8 -*- import string, sys from threading import Thread import os import time class test_pipe(Thread): def __init__(self, fd): Thread.__init__(self) self.testfd = fd def run(self): print "started thread begin -----" while True: buf = self.testfd.read() print "receive %s" % (buf) time.sleep(1) #print "hoho" if __name__ == "__main__": stdin_r, stdin_w = os.pipe() #stdout_r, stdout_w = pipe() f_w = os.fdopen(stdin_w, "w", 0) thrd = test_pipe(os.fdopen(stdin_r, "r", 0)) thrd.start() time.sleep(1) while True: f_w.write("help\r\n") time.sleep(1) thrd.join() -------------------------------------------- well, I want the following small test about pipe() in thread(). OK, I write to the pipe in the main thread, and I created a new thread for reading from the pipe, then it will print what it received from the pipe(). But, it seems it block at the "self.testfd.read()". So, is there and suggestion and explaination about it? Thanks in advance.

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Conjunction List
by ccy56781＠gmail.com June 1, 2008

June 1, 2008

http://codepad.org/MV3k10AU I want to write like next one. def conjunction(number=a[1],name=b[1],size=c[1]): flag = a[0]==b[0]==c[0] if flag: for e in zip(number,name,size): print e conjunction(a,b,c) ----------------------------------------------------------------------------------------------------- function args receive sequence element: def somefunc(name=elm1[1], size=elm2[1], color=elm3[1]): for e in zip(name, size, color): print e, conjunction(a,b,c) ----------------------------------------------------------------------------------------------------- not like two case: ----------------------------------------------------------------------------------------------------- def somefunc(elm1, elm2, elm3): name = elm1[1]; size = elm1[1]; color = elm1[1] # best solution? for e in zip(name, size, color): print e, conjunction(a,b,c) ----------------------------------------------------------------------------------------------------- def somefunc(elm1, elm2, elm3, **attr): for e in zip(attr['name'], attr['size'], attr['color']): print e, conjunction(a,b,c, name=a[1], size=b[1], color=c[1]) # many args... ----------------------------------------------------------------------------------------------------- What's a good approach to get the conjunction nest-list-data?

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Re: [Business apps for Windows] Good grid + calendar, etc.?
by Gilles Ganault June 1, 2008

June 1, 2008

On Sun, 01 Jun 2008 11:24:17 -0400, python(a)bdurham.com wrote: >Instead of the COM approach, have you considered using a local, client >based Python server as a container for your business logic and GUI >(DHTML, AJAX)? But web-based apps are even worse, since the set of widgets is even more basic, and web programming is hell. That's why I don't bother, and write fat apps instead. It'd be awesome if someone came up with a commercial offer of widgets that are either missing or not feature-rich enough in wxPython for real business apps.

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Re: [Business apps for Windows] Good grid + calendar, etc.?
by Gilles Ganault June 1, 2008

June 1, 2008

On Sun, 1 Jun 2008 21:27:30 +0900, "Ryan Ginstrom" <software(a)ginstrom.com> wrote: >For your stated needs, I'd advise checking out IronPython or Python.NET >(which allow use of .NET GUI libraries). Thanks but I forgot to say that I'd rather not use .Net because deployment/updates are too problematic for our audience. .. that's assuming that a GUI Python can install/update itself as easily as eg. Delphi, which is where I could be wrong :-/

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Re: [Business apps for Windows] Good grid + calendar, etc.?
by Gilles Ganault June 1, 2008

June 1, 2008

On Sun, 1 Jun 2008 21:59:29 +0900, "Ryan Ginstrom" <software(a)ginstrom.com> wrote: >wxPython can be made to look pretty nice. Check out Chandler for an example. >http://chandlerproject.org/ Yup, they developped some nice-looking widgets, but it doesn't seem like there's an ecosystem around wxWidgets. I, for one, wouldn't mind paying for widgets missing from the stock version. >If you don't mind being Windows-only, there's another approach that I've >been working on. Thanks for the idea, but I don't have the skills for something like that :-) Besides, the reason for Python is to make it faster/easier to write apps, so WTL + browser + COM seems too hard for me.

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Need Tutorial For the following lib
by Gandalf June 1, 2008

June 1, 2008

Hi every one. I need comprehensive tutorial for the following library : 1. pyWinAuto 2. winGuiAuto Thanks in advance

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Ann: Pyparsing 1.5.0 released
by Paul McGuire June 1, 2008

June 1, 2008

I've just uploaded to SourceForge the latest update to pyparsing, version 1.5.0. This version includes a number of long-awaited features, so I thought it was time to bump the minor rev version. - parsing a complete string without having to add StringEnd() to the pyparsing grammar, by adding parseAll argument to the parseString method (default value is False to maintain compatibility with prior versions, set to True to force parsing of the full input string) - support for indentation-based grammars (like Python's), using a new helper method, indentedBlock. - improved syntax error detection and reporting, based on the ErrStop class submitted by Eike Welk on the pyparsing forum, and Thomas/Poldy's proposal on the pyparsing wiki; the CHANGES file includes a detailed example showing how syntax errors can be designated by using '-' instead of '+' operators Pyparsing 1.5.0 also includes a number of bug-fixes, described in more detail in the CHANGES file. (Despite my best efforts, I have *not* been able to include support for Python 3.0 using a common source code base. For those who wish to try out pyparsing with Python 3.0, there is a file pyparsing_py3.py in the SourceForge Subversion repository. I have done some testing of this code, but many of my unit tests still need to be converted to Python 3.) Download pyparsing 1.5.0 at http://sourceforge.net/projects/pyparsing/. The pyparsing Wiki is at http://pyparsing.wikispaces.com -- Paul ======================================== Pyparsing is a pure-Python class library for quickly developing recursive-descent parsers. Parser grammars are assembled directly in the calling Python code, using classes such as Literal, Word, OneOrMore, Optional, etc., combined with operators '+', '|', and '^' for And, MatchFirst, and Or. No separate code-generation or external files are required. Pyparsing can be used in many cases in place of regular expressions, with shorter learning curve and greater readability and maintainability. Pyparsing comes with a number of parsing examples, including: - "Hello, World!" (English, Korean, Greek, and Spanish(new)) - chemical formulas - configuration file parser - web page URL extractor - 5-function arithmetic expression parser - subset of CORBA IDL - chess portable game notation - simple SQL parser - Mozilla calendar file parser - EBNF parser/compiler - Python value string parser (lists, dicts, tuples, with nesting) (safe alternative to eval) - HTML tag stripper - S-expression parser - macro substitution preprocessor - TAP output parser (new)

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