[Python-3000] Warning for 2.6 and greater

Wed Jan 10 16:39:45 CET 2007

On Tue, Jan 09, 2007, Thomas Wouters wrote:
> On 1/9/07, Aahz <aahz at pythoncraft.com> wrote:
>>>>Hey! What's this about __cmp__?!
>> Python 3.0x (p3yk:53295, Jan 8 2007, 09:32:17)
> [GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>>object.__cmp__
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> AttributeError: type object 'object' has no attribute '__cmp__'
>> E's dead. Stone dead, miss.

Unfortunately, I haven't set up a checkout of py3k yet, could you please
test what this does:
 class CheapCompare:
 def __init__(self, value):
 self.value = value
 def __cmp__(self, other):
 x = self.value
 y = other.value
 if x == y:
 return 0
 elif x > y:
 return 1
 else:
 return -1
 print cmp(CheapCompare(1), CheapCompare(2))
If that doesn't work, I expect there to be some unhappy Numeric people.
OTOH, if that does work, what exactly will you be warning about?
-- 
Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/
"Plus ca change, plus c'est la meme chose."