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

help with warning formatting
by Mike Brown March 11, 2005

March 11, 2005

I'm trying to get the hang of warnings. % cat t.py import warnings warnings.warn('foo') % python t.py t.py:2: UserWarning: foo warnings.warn('foo') Is there a way to just issue the warning message itself, or to at least suppress printing the line where the warning occurred (" warnings.warn('foo')" in the example)? See, I want to warn the user of my application that they're doing something risky or improper, so I just want to emit the 'foo', subject to the usual determination of whether the warning needs to be printed at all. For my purposes, the user doesn't need to know where the warning occurred, and they certainly don't need to see pieces of the call stack. The way it works now, it seems to be intended to warn the application programmer that they're doing something risky in the code (?). Thanks in advance for any advice.

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Re: Code evaluation at function definition execution time (was Re: Compile time evaluation (aka eliminating default argument hacks))
by Steven Bethard March 11, 2005

March 11, 2005

Nick Coghlan wrote: > Anyway, if others agree that the ability to execute a suite at def > exeuction time to preinitialise a function's locals without resorting to > bytecode hacks is worth having, finding a decent syntax is the next > trick :) I'm not certain how many use cases really require a full suite, though being able to define default values for function locals in the same way that default values can be defined for function arguments would be nice. Worth looking at is the thread: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/5… STeVe

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Trouble with mysql-python 1.2.0 on Solaris 8 sparc
by Alec Wysoker March 9, 2005

March 9, 2005

I need to be able to access mySQL 4.0 and 4.1 databases from python. I was hoping to find mysql-python 1.2.0 already built for Sparc, but no such luck. I've been struggling trying to get it build. First, I had to hack setup.py because mysql_config --cflags was returning -m64, which wasn't right because this is on a 32-bit processor. Then I got a warning: ld: warning: file /usr/local/mysql/lib/libmysqlclient_r.a(libmysql.o): wrong ELF class: ELFCLASS64 No idea if this is causing my current problem. Finally, I seemed to get the thing built and installed, but why I try to import MySQLdb, I get the following: File "/usr/local/lib/python2.3/site-packages/MySQLdb/__init__.py", line 27, in ? import _mysql ImportError: ld.so.1: /usr/local/bin/python: fatal: relocation error: file /usr/local/lib/python2.3/site-packages/_mysql.so: symbol mysql_errno: referenced symbol not found Any advice would be greatly appreciated. Thanks, Alec Wysoker

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Re: Accessing files installed with distutils
by Leif K-Brooks March 8, 2005

March 8, 2005

Frans Englich wrote: > This is silly. How do I access data files I've installed with distutils? In a > portable, generic way, I want to find out what is the following path on most > systems: > > /usr/local/lib/python2.4/lib/site-packages/foo/bar.txt Assuming your module is also in site-packages/foo, I would use: import os filename = os.path.join(os.path.dirname(__file__), 'bar.txt')

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Unable to run IDLE Under Windows
by Jonathan Polley March 7, 2005

March 7, 2005

I have one account on a WindowsXP machine that refuses to run IDLE (or any other python script that uses Tk). Other people can login to that PC and IDLE runs just fine, so it is not an installation issue. When the person who has the problem logs into another PC the problem follows them. Any ideas as to what might me wrong? This is the traceback from IDLE: C:\Python20\Tools\idle>..\..\python.exe idle.py Traceback (most recent call last): File "idle.py", line 12, in ? PyShell.main() File "C:\Python20\Tools\idle\PyShell.py", line 732, in main root = Tk(className="Idle") File "c:\python20\lib\lib-tk\Tkinter.py", line 1482, in __init__ self.tk = _tkinter.create(screenName, baseName, className) TclError: unknown color name "white " C:\Python20\Tools\idle> Thanks in advance, Jonathan Polley jwpolley rockwellcollins com

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any Python equivalent of Math::Polynomial::Solve?
by Just March 6, 2005

March 6, 2005

While googling for a non-linear equation solver, I found Math::Polynomial::Solve in CPAN. It seems a great little module, except it's not Python... I'm especially looking for its poly_root() functionality (which solves arbitrary polynomials). Does anyone know of a Python module/package that implements that? Just

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function expression with 2 arguments
by Xah Lee March 6, 2005

March 6, 2005

is there a way to write a expression of a function with more than 1 argument? e.g., i want a expression that's equivalent to def f(x,y) return x+y Xah xah(a)xahlee.org http://xahlee.org/PageTwo_dir/more.html

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Win32 drive mapping... aka "net use"
by lshuler＠my-deja.com March 6, 2005

March 6, 2005

Is there an API using Win32 extensions to map a drive share? I have not found one yet and have tried searching "Win32 map drive". I am looking for the equivalent of: net use <share path> If not, is there an alternative other than making a call to system("net use <path>"). Thanks in advance, Lance Sent via Deja.com http://www.deja.com/ Before you buy.

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Explicit or general importing of namespaces?
by Harlin Seritt March 5, 2005

March 5, 2005

Is there really a major performance difference between doing the following: import Tkinter as TK TK.Label(yada yada) OR from Tkinter import * Label(yada yada) I'm unable to tell a real difference other than in the code writing :-). Thanks, Harlin

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Re: Is there way to determine which class a method is bound to?
by roy＠panix.com March 5, 2005

March 5, 2005

In article <mailman.3053.1109342775.22381.python-list(a)python.org>, Victor Ng <crankycoder(a)gmail.com> wrote: >I'm doing some evil things in Python and I would find it useful to >determine which class a method is bound to when I'm given a method >pointer. I don't know where (or if) it's documented, but im_class seems to give you what you want. ------ class Foo(object): def x(self): return 42 f = Foo() print f.x.im_class ------ king:play$ ./x.py <class '__main__.Foo'> I have no idea why it's not __imclass__ or some such, but poking around with dir() is a great way to explore little nooks and crannies like this. I just printed dir(Foo().x) and tried stuff that looked interesting until I found what I (you) wanted.

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