🌐 Mailman 3 February 2013 - Python-list - python.org

py2exe, program has stoped working!?
by skanemupp＠yahoo.se Nov. 23, 2018

Nov. 23, 2018

so i used py2exe and i have the build and the dist-folders. in the distfolder there is a Calculator.exe file. when i run it it just says "Calculator.exe has stopped working" in a popup but the program itself never shows up. wtf!? and when im distributing my program i have to include both catalogues right?

5 7

SWIG+Distutils - no harmony?
by m.bless＠gmx.de July 7, 2018

July 7, 2018

Getting courageous I try building 'example.pyd' from the SWIG 'Simple Example' using SWIG and the Distutils. Looks promising but doesn't succeed. I didn't modify 'example.c' and 'example.i'. Problems/questions: (1) Is 'setup.py' ok? (2) BEWARE: What's really shocking: After see (unsuccessful) python setup.py build -cmingw32 the original 'example.c' is GONE AND AWAY - replaced by the wrapper. (3) What's going wrong? Martin Sources und logs following: >----------<>----------<>----------< # setup.py # mb: Is this ok? import distutils from distutils.core import setup, Extension #from distutils.extension import Extension setup(name = "Example 'Simple' from the SWIG examples", version = "2.2", ext_modules = [Extension("example", ["example.i"])]) >----------<>----------<>----------< /* File : example.i */ %module example extern int gcd(int x, int y); extern double Foo; >----------<>----------<>----------< /* File : example.c */ /* A global variable */ double Foo = 3.0; /* Compute the greatest common divisor of positive integers */ int gcd(int x, int y) { int g; g = y; while (x > 0) { g = x; x = y % x; y = g; } return g; } >----------<>----------<>----------< C:\python Python 2.2 (#28, Dec 21 2001, 12:21:22) [MSC 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> >----------<>----------<>----------< swig -version SWIG Version 1.3.10u-20011211-2004 Copyright (c) 1995-1998 University of Utah and the Regents of the University of California Copyright (c) 1998-2001 University of Chicago Compiled with CC >----------<>----------<>----------< >python setup.py build -cmingw32 running build running build_ext building 'example' extension swigging example.i to example.c c:\pyext\swig\swig.exe -python -dnone -ISWIG -o example.c example.i c:\mingw\bin\gcc.exe -mno-cygwin -mdll -O -Wall -IC:\PYTHON22\include -c example.c -o build\temp.win32-2.2\Release\example.o writing build\temp.win32-2.2\Release\example.def c:\mingw\bin\gcc.exe -mno-cygwin -mdll -static -s build\temp.win32-2.2\Release\example.o build\temp.win32-2.2\Release\example.def -LC:\PYTHON22\libs -lpython22 -o build\lib.win32-2.2\example.pyd swig: Warning. -dnone option deprecated. example.c: In function `SWIG_UnpackData': example.c:363: warning: `uu' might be used uninitialized in this function example.c: In function `SWIG_ConvertPtr': example.c:429: warning: suggest explicit braces to avoid ambiguous `else' example.c:432: warning: suggest explicit braces to avoid ambiguous `else' example.c:438: warning: suggest explicit braces to avoid ambiguous `else' example.c: At top level: example.c:154: warning: `SWIG_TypeQuery' defined but not used example.c:385: warning: `SWIG_ConvertPtr' defined but not used example.c:468: warning: `SWIG_ConvertPacked' defined but not used example.c:537: warning: `SWIG_MakeShadow' defined but not used build\temp.win32-2.2\Release\example.o(.text+0xbda):example.c: undefined reference to `gcd' build\temp.win32-2.2\Release\example.o(.text+0xc35):example.c: undefined reference to `Foo' build\temp.win32-2.2\Release\example.o(.text+0xc6b):example.c: undefined reference to `Foo' build\temp.win32-2.2\Release\example.o(.text+0xc71):example.c: undefined reference to `Foo' error: command 'gcc' failed with exit status 1 >----------<>----------<>----------<

10 14

Writing an assembler in Python
by Giorgos Tzampanakis June 20, 2018

June 20, 2018

I'm implementing a CPU that will run on an FPGA. I want to have a (dead) simple assembler that will generate the machine code for me. I want to use Python for that. Are there any libraries that can help me with the parsing of the assembly code?

16 16

Why there is no "setdefaultencoding" in sys module?
by crow Feb. 15, 2018

Feb. 15, 2018

Hi, everyone I'm a new hand at python. I tried to set system default encoding by using "import sys; sys.setdefaultencoding('utf-f')", but I got error message: >>> sys.setdefaultencoding('utf-8') Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'module' object has no attribute 'setdefaultencoding' Then I checked dir(sys), seems there was no function named "setdefaultencoding" in "sys" module. But in python's document, it said I should use sys.setdefaultencoding. So, my questions: why there is no setdefaultencoding in sys module? if I want to change system's default encoding, what should I do? Thanks in advance

6 7

merits of Lisp vs Python
by Mark Tarver Jan. 12, 2018

Jan. 12, 2018

How do you compare Python to Lisp? What specific advantages do you think that one has over the other? Note I'm not a Python person and I have no axes to grind here. This is just a question for my general education. Mark

135 811

Why "flat is better than nested"?
by kj Dec. 22, 2017

Dec. 22, 2017

In "The Zen of Python", one of the "maxims" is "flat is better than nested"? Why? Can anyone give me a concrete example that illustrates this point? TIA! ~kj PS: My question should not be construed as a defense for "nested". I have no particular preference for either flat or nested; it all depends on the situation; I would have asked the same question if the maxim had been "nested is better than flat".

14 16

Re: urllib2 urlopen takes too much time
by aahz＠pythoncraft.com Dec. 3, 2017

Dec. 3, 2017

In article <mailman.1916.1245600033.8015.python-list(a)python.org>, =?UTF-8?Q?Filip_Gruszczy=C5=84ski?= <gruszczy(a)gmail.com> wrote: > >I have encountered a performance problem using suds, which was traced >down to _socket.recv. I am calling some web services and each of them >uses about 0.2 sec and 99% of this time is spent on urllib2.urlopen, >while the rest of the call is finished in milliseconds. What happens if you use urlopen() by itself? -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha

3 2

How to add months to a date (datetime object)?
by tinnews＠isbd.co.uk Nov. 22, 2017

Nov. 22, 2017

I have a date in the form of a datetime object and I want to add (for example) three months to it. At the moment I can't see any very obvious way of doing this. I need something like:- myDate = datetime.date.today() inc = datetime.timedelta(months=3) myDate += inc but, of course, timedelta doesn't know about months. I had a look at the calendar object but that didn't seem to help much. -- Chris Green

15 19

ANN: obfuscate 0.2.2
by Steven D'Aprano Nov. 14, 2017

Nov. 14, 2017

I am pleased to announce the first stable release of obfuscate, version 0.2.2. http://pypi.python.org/pypi/obfuscate/ obfuscate is a pure-Python module providing classical encryption algorithms suitable for obfuscating and unobfuscating text. This is a maintenance release of back-end and API changes but no new ciphers. This should be considered the first stable API for obfuscate. obfuscate includes the following ciphers: - rot13, rot5, rot18, rot47 - atbash - Caesar cipher - Keyword - Affine - Playfair, Playfair6, Playfair16 - frob (xor) - Vigenere - RailFence - plus others. DISCLAIMER: obfuscate is not cryptographically strong, and should not be used where high security is required. obfuscate is released under the MIT licence. Requires Python 2.5 or 2.6. -- Steven

5 5

Best way to insert sorted in a list
by SherjilOzair Sept. 8, 2017

Sept. 8, 2017

There are basically two ways to go about this. One is, to append the new value, and then sort the list. Another is to traverse the list, and insert the new value at the appropriate position. The second one's complexity is O(N), while the first one's is O(N * log N). Still, the second one works much better, because C code is being used instead of pythons. Still, being a programmer, using the first way (a.insert(x); a.sort()), does not feel right. What has the community to say about this ? What is the best (fastest) way to insert sorted in a list ?

10 11