Incomparable abominations
Lulu of the Lotus-Eaters
mertz at gnosis.cx
Sat Mar 22 21:17:23 EST 2003
"Tim Peters" <tim_one at email.msn.com> wrote previously:
|Python's comparison sometimes resorts to comparing objects' memory
|addresses. The most notorious case of that is instances of a common
|class
I have no particular desire to have sorting work identically between
platforms, versions, or even different interpreter runs. As I wrote
before, I just want it consistent *within* an interpreter run.
That is to say, I want the following function always to return True:
def WantTrue(*l):
m = list(l)
n = list(l)
m.sort()
n.sort()
return m == n
My desire was fulfilled for Python 1.5.2 and every earlier version, btw
(the only caveat I can think of is if the builtin 'list' was
overridden). Python 2.0 broke the desideratum for the new Unicode
objects (sometimes)[*]. Python 2.1 broke it worse for complex numbers.
Yours, Lulu...
[*] I'm not positive whether 1.6 has Unicode, actually. I don't have
that version installed on my current system (only 1.5.1, 1.5.2, 2.0,
2.0-stackless, 2.1, 2.2.0, 2.2.2, 2.3a2, and Jython 2.0 :-)).
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