On 5/07/12 19:03:57, Alexander Blinne wrote: > On 05.07.2012 16:34, Laszlo Nagy wrote: >>>>> five.contents[five.contents[:].index(5)] = 4 >>>>> 5 >> 4 >>>>> 5 is 4 >> True
> That's surprising, because even after changing 5 to 4 both objects still > have different id()s (tested on Py2.7), so 5 is 4 /should/ still be > False (But isn't on my 2.7). But that's some implementation detail we > are not supposed to play with ;) On my 2.7, id(5) gives the same value as id(4) == id(2+2), but id(2+3) has a different value. The 'is' operator is consistent with 'id': >>> 4 is 5 True >>> 2+2 is 2+3 False This is when using the interactive interpreter; it may be different in Idle. -- HansM -- http://mail.python.org/mailman/listinfo/python-list
