🌐 Mailman 3 July 2010 - Python-list - python.org

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Standard distutils package problems with MSVC / lacking functionality?
by Alf P. Steinbach /Usenet Aug. 29, 2010

Aug. 29, 2010

I let the setup.py script talk: <code> # 03_1__noddy from distutils.core import setup, Extension import distutils.ccompiler compilerName = distutils.ccompiler.get_default_compiler() options = [] if compilerName == "msvc": # * distutils sets warning level 3: # Overriding with warning level 4 generates command line warning D9025... # There's no good away around that, it needs fix/extension of distutils # or the config file(s) that distutil uses (perhaps that's a makefile?). options.append( "/W4" ) # Must be done in this script. # * distutils forgets to enable exception handling: options.append( "/EHsc" ) # Could be done via CL env. var. # * distutils forgets to enable RTTI: options.append( "/GR" ) # Could be done via CL env. var. # * distutils forgets to enable standard 'for' loop and 'wchar_t' type: options.append( "/Zc:forScope,wchar_t" ) # Could be done via CL env. var. module1 = Extension( name = "noddy", sources = [ "noddy.cpp" ], extra_compile_args = options ) setup( name = "noddy", version = '1.0', description = 'This is a demo package', ext_modules = [module1] ) </code> Cheers, - Alf -- blog at <url: http://alfps.wordpress.com>

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Re: python terminology on classes
by Rhodri James Aug. 24, 2010

Aug. 24, 2010

On Mon, 26 Jul 2010 22:52:06 +0100, Peng Yu <pengyu.ut(a)gmail.com> wrote: > Hi > > I'm still kind of confused about the terminology on classes in python. > > Could you please let me know what the equivalent terms for the > following C++ terms? Seriously, we can't keep doing your thinking for you. The answers to all your questions are section 9 of the tutorial. -- Rhodri James *-* Wildebeeste Herder to the Masses

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Re: max time threads
by pacopyc Aug. 18, 2010

Aug. 18, 2010

On 19 Giu, 00:27, MRAB <pyt...(a)mrabarnett.plus.com> wrote: > pacopyc wrote: > > [snip] > > Ok, the problem is that I want fix a time max for each thread. For > > example run 10 threads (each can terminate its work in 10 sec. max > > fixed time) and wait them. If they finish its work in < 10 sec. (for > > example 2 sec.) very good ... go on immediately (don't wait > > unnecessary time), but if a thread use more than 10 sec. stop wait (I > > kill it) .... when all threads have finished their work or when they > > have used all their available time (10 sec.) the program must go on > > (don't wait). > > It's not possible to kill a thread. If you want a thread to have a > maximum time, the thread must check occasionally how long it has been > running and terminate if necessary. > > Another programming language (Java) originally had the ability to kill > threads, but that was later deprecated because it caused problems due to > not knowing what the thread was doing when it was killed (it might have > been in the middle of updating something at the time, for example, > leaving the system in an inconsistent state). Ok, I understand. But is possible fix max wait time (for example 60 sec.) in main thread and check queue for task done and at the same time the remaining time. When all task have done or wait time has expired main thread go on. Is it possible? Can you write code? Thank you very much.

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suitable py2app.
by ata.jaf Aug. 8, 2010

Aug. 8, 2010

Hi, I'm looking for a suitable tutorial for "py2app". I googled it but couldn't find anything. Can you help me please? Thanks Ata

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distutils question - building universal modules on OS X?
by Louis Theran Aug. 7, 2010

Aug. 7, 2010

Is there a standard recipe for getting distutils to built universal .so files for modules that have C/C++ source?

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Problem with Elementtree and XMLSchem instance type
by Roland Hedberg Aug. 7, 2010

Aug. 7, 2010

Hi! I have the following XML snippet: <RoleDescriptor xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:fed="http://docs.oasis-open.org/wsfed/federation/200706" xsi:type="fed:SecurityTokenServiceType"> .... </RoleDescriptor> This part after parsing with Elementtree gives me an Element instance with the following properties: > tree.tag {urn:oasis:names:tc:SAML:2.0:metadata}RoleDescriptor > tree.keys() ['{http://www.w3.org/2001/XMLSchema-instance}type'] > tree['{http://www.w3.org/2001/XMLSchema-instance}type'] fed:SecurityTokenServiceType And there is the problem, I've lost the coupling between the prefix 'fed' and the namespace "http://docs.oasis-open.org/wsfed/federation/200706". Is there any way I can get at the prefix <-> namespace mapping from an Element instance ? I've read the documentation I can find and there is nothing that tells me how to get at the mapping. If I print the Element instance the prefix 'fed' is replace by 'ns0' or something like that. Definitely something that has no connection to the original 'fed'. -- Roland

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Re: Nice way to cast a homogeneous tuple
by Steven D'Aprano Aug. 7, 2010

Aug. 7, 2010

On Wed, 28 Jul 2010 09:35:52 -0400, wheres pythonmonks wrote: > Thanks ... I thought int was a type-cast (like in C++) so I assumed I > couldn't reference it. Python doesn't have type-casts in the sense of "tell the compiler to treat object of type A as type B instead". The closest Python has to that is that if you have an instance of class A, you can do this: a = A() # make an instance of class A a.__class__ = B # tell it that it's now class B and hope that it won't explode when you try to use it :/ I make that seem like a dangerous thing to do, but it's not really. There actually are sensible use-cases for such a thing, you can't do it to built-ins (which would be dangerous!), and the worst that will happen with classes written in Python is they'll raise an exception when you try calling a method, rather than dump core. Otherwise, all type conversions in Python create a new instance of the new type, and the conversion functions themselves (int, str, etc.) are actual type objects which you can pass around to functions: >>> type(int) <type 'type'> Calling int(x) calls the int constructor with argument x, and returns a new int object. (In the *specific* case of int, it will sometimes cache small integers and re-use the same one multiple times, but don't count on that behaviour since it's an implementation-specific optimization.) -- Steven

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Re: measuring a function time
by Steven D'Aprano Aug. 7, 2010

Aug. 7, 2010

On Thu, 29 Jul 2010 14:42:58 +0200, Matteo Landi wrote: > This should be enough > >>>>import time >>>>tic = time.time() >>>>function() >>>>toc = time.time() >>>>print toc - tic You're typing that in the interactive interpreter, which means the timer is counting the seconds while you're typing subsequent commands. At the very least, you need to put that code into a function. More importantly, the above technique is acceptable if function() is very long-running (multiple seconds, at least). If it is quick, or a code- snippet, the time you measure will be dominated by random chance. The best way to time small code snippets and fast functions is with the timeit module. -- Steven

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Unicode error
by dirknbr Aug. 7, 2010

Aug. 7, 2010

I am having some problems with unicode from json. This is the error I get UnicodeEncodeError: 'ascii' codec can't encode character u'\x93' in position 61: ordinal not in range(128) I have kind of developped this but obviously it's not nice, any better ideas? try: text=texts[i] text=text.encode('latin-1') text=text.encode('utf-8') except: text=' ' Dirk

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