Message 359049 - Python tracker

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Author	Ruslan Dautkhanov
Recipients	Ruslan Dautkhanov
Date	2019-12-30.17:17:10
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1577726230.5.0.713641828615.issue39168@roundup.psfhosted.org>
In-reply-to

Content
Reported originally here - https://twitter.com/__zero323__/status/1210911632953692162 See details here https://asciinema.org/a/290643 In [4]: class Foo: pass In [5]: %timeit -n1_000_000 Foo() 88.5 ns ± 3.44 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) In [6]: T = TypeVar("T") In [7]: class Bar(Generic[T]): pass In [8]: %timeit -n1_000_000 Bar() 883 ns ± 3.46 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) Same effect in Python 3.6 and 3.8

Reported originally here - 
https://twitter.com/__zero323__/status/1210911632953692162

See details here
https://asciinema.org/a/290643

In [4]: class Foo: pass
In [5]: %timeit -n1_000_000 Foo()
88.5 ns ± 3.44 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

In [6]: T = TypeVar("T")
In [7]: class Bar(Generic[T]): pass
In [8]: %timeit -n1_000_000 Bar()
883 ns ± 3.46 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

Same effect in Python 3.6 and 3.8

History
Date	User	Action	Args
2019-12-30 17:17:10	Ruslan Dautkhanov	set	recipients: + Ruslan Dautkhanov
2019-12-30 17:17:10	Ruslan Dautkhanov	set	messageid: <1577726230.5.0.713641828615.issue39168@roundup.psfhosted.org>
2019-12-30 17:17:10	Ruslan Dautkhanov	link	issue39168 messages
2019-12-30 17:17:10	Ruslan Dautkhanov	create