Message 277283 - Python tracker

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Author	serhiy.storchaka
Recipients	Demur Rumed, abarry, rhettinger, serhiy.storchaka, vstinner
Date	2016-09-23.15:31:56
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1474644717.06.0.671354831499.issue27358@psf.upfronthosting.co.za>
In-reply-to

Content
Microbenchmarks: $ ./python -m timeit -s "def f(kw): pass" -s "b = {'b': 2}" -- "f(a=1, b)" Unpatched: 100000 loops, best of 3: 7.64 usec per loop Patched: 100000 loops, best of 3: 3.14 usec per loop $ ./python -m timeit -s "def f(kw): pass" -s "a = {'a': 1}; b = {'b': 2}" -- "f(a, b)" Unpatched: 100000 loops, best of 3: 6.93 usec per loop Patched: 100000 loops, best of 3: 2.66 usec per loop $ ./python -m timeit -s "def f(a=None, b=None): pass" -s "b = {'b': 2}" -- "f(a=1, b)" Unpatched: 100000 loops, best of 3: 7.27 usec per loop Patched: 100000 loops, best of 3: 2.83 usec per loop $ ./python -m timeit -s "def f(a=None, b=None): pass" -s "a = {'a': 1}; b = {'b': 2}" -- "f(a, b)" Unpatched: 100000 loops, best of 3: 6.47 usec per loop Patched: 100000 loops, best of 3: 2.31 usec per loop

Microbenchmarks:

$ ./python -m timeit -s "def f(**kw): pass" -s "b = {'b': 2}" -- "f(a=1, **b)"
Unpatched:  100000 loops, best of 3: 7.64 usec per loop
Patched:    100000 loops, best of 3: 3.14 usec per loop

$ ./python -m timeit -s "def f(**kw): pass" -s "a = {'a': 1}; b = {'b': 2}" -- "f(**a, **b)"
Unpatched:  100000 loops, best of 3: 6.93 usec per loop
Patched:    100000 loops, best of 3: 2.66 usec per loop

$ ./python -m timeit -s "def f(a=None, b=None): pass" -s "b = {'b': 2}" -- "f(a=1, **b)"
Unpatched:  100000 loops, best of 3: 7.27 usec per loop
Patched:    100000 loops, best of 3: 2.83 usec per loop

$ ./python -m timeit -s "def f(a=None, b=None): pass" -s "a = {'a': 1}; b = {'b': 2}" -- "f(**a, **b)"
Unpatched:  100000 loops, best of 3: 6.47 usec per loop
Patched:    100000 loops, best of 3: 2.31 usec per loop

History
Date	User	Action	Args
2016-09-23 15:31:57	serhiy.storchaka	set	recipients: + serhiy.storchaka, rhettinger, vstinner, abarry, Demur Rumed
2016-09-23 15:31:57	serhiy.storchaka	set	messageid: <1474644717.06.0.671354831499.issue27358@psf.upfronthosting.co.za>
2016-09-23 15:31:57	serhiy.storchaka	link	issue27358 messages
2016-09-23 15:31:56	serhiy.storchaka	create