On Fri, Jul 20, 2007 at 03:27:51PM -0700, [EMAIL PROTECTED] wrote:
> Consider the following:
> >>> a = {1:2, 3:4, 2:5}
>
> Say that i want to get the keys of a, sorted. First thing I tried:
>
> >>> b = a.keys().sort()
> >>> print b
> None
list's sort() method sorts the list _in_place_:
>>> l = ['spam', 'eggs']
>>> help(l.sort)
Help on built-in function sort:
sort(...)
L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;
cmp(x, y) -> -1, 0, 1
That means that doesn't return a sorted version of the list you're
working with. Instead, it sorts the list itself.
If you want to return a sorted list, use (duh) sorted:
>>> sorted(l)
['eggs', 'spam', 'spam']
--
[Will [EMAIL PROTECTED]|http://www.lfod.us/]
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