mk wrote in news:mailman.915.1259064240.2873.python-l...@python.org in
comp.lang.python:
>
> def pythonic():
> def unpythonic():
> Decidedly counterintuitive: are there special optimizations for "if
> nonevar:" type of statements in cpython implementation?
>
from dis import dis
dis( unpythonic )
18 31 LOAD_FAST 0 (nonevar)
34 LOAD_CONST 0 (None)
37 COMPARE_OP 9 (is not)
40 JUMP_IF_FALSE 4 (to 47)
dis( pythonic )
11 31 LOAD_FAST 0 (nonevar)
34 JUMP_IF_FALSE 4 (to 41)
Rob.
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