On Mon, 18 Aug 2014 00:43:58 -0400, Terry Reedy wrote: > >>> timeit.repeat('1+1') > [0.04067762117549266, 0.019206152658126363, 0.018796680446902643]
I think you have been tripped up by the keyhole optimizer. I'm not entirely certain, but that's probably just measuring the overhead of evaluating the constant 2. Same applies to your other "constant + constant" tests. This is in Python 3.3, and is suggestive: py> bc = compile('1+1', '', 'exec') py> from dis import dis py> dis(bc) 1 0 LOAD_CONST 2 (2) 3 POP_TOP 4 LOAD_CONST 1 (None) 7 RETURN_VALUE -- Steven -- https://mail.python.org/mailman/listinfo/python-list