Difference between 'is' and '=='
ethrandil at gmx.net
Mon Mar 27 15:09:52 CEST 2006
Roy Smith wrote:
> In article <e08mr1$7lu$1 at news.lysator.liu.se>,
> Joel Hedlund <joel.hedlund at gmail.com> wrote:
>> Which means that "is" comparisons in general will be faster than ==
> I thought that == automatically compared identify before trying to compare
> the values. Or am I thinking of some special case, like strings?
Even for strings there is a performance difference:
>>> timeit.Timer("'a' is 'a'").timeit()
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