Steven D'Aprano wrote:
> I would love to see your test code and profiling results that demonstrate
> that explicit tuple unpacking in the body of a function is faster than
> tuple unpacking (implicit or explicit) in the header of a function.
Should be pretty close. I believe the byte-code is nearly identical:
py> def f1((x, y)):
... pass
...
py> def f2(x_y):
... x, y = x_y
...
py> dis.dis(f1)
1 0 LOAD_FAST 0 (.0)
3 UNPACK_SEQUENCE 2
6 STORE_FAST 1 (x)
9 STORE_FAST 2 (y)
2 12 LOAD_CONST 0 (None)
15 RETURN_VALUE
py> dis.dis(f2)
2 0 LOAD_FAST 0 (x_y)
3 UNPACK_SEQUENCE 2
6 STORE_FAST 2 (x)
9 STORE_FAST 1 (y)
12 LOAD_CONST 0 (None)
15 RETURN_VALUE
STeVe
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