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Author	josiahcarlson
Date	2007年03月22日.17:49:10
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twobitsprite: your use-case is different from that of others. While you could use an identity function for your purposes, a lambda would work just fine. Regardless, there is call overhead, which can only be reduced by not performing a call at all. In terms of an identity function versus tuple creation and indexing as per belopolsky's suggestion... >>> timeit.Timer("x(1+2,3+4)", "x = lambda *args:args[-1]").timeit() 0.99381552025397468 >>> timeit.Timer("(1+2,3+4)[-1]", "").timeit() 0.49153579156927663 Tuple is faster. Just use a tuple.

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twobitsprite: your use-case is different from that of others. While you could use an identity function for your purposes, a lambda would work just fine. Regardless, there is call overhead, which can only be reduced by not performing a call at all.
In terms of an identity function versus tuple creation and indexing as per belopolsky's suggestion...
>>> timeit.Timer("x(1+2,3+4)", "x = lambda *args:args[-1]").timeit()
0.99381552025397468
>>> timeit.Timer("(1+2,3+4)[-1]", "").timeit()
0.49153579156927663
Tuple is faster. Just use a tuple.

History
Date	User	Action	Args
2007年08月23日 16:12:36	admin	link	issue1673203 messages
2007年08月23日 16:12:36	admin	create