Message 270333 - Python tracker

Message270333

Author	serhiy.storchaka
Recipients	Demur Rumed, eric.smith, mjpieters, serhiy.storchaka, ztane
Date	2016-07-13.18:09:17
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1468433357.54.0.69984287225.issue27078@psf.upfronthosting.co.za>
In-reply-to

Content
Yet one case for comparison (with msg270095): $ ./python -m timeit -s "x = 2" -- 'f"X is {x!s}"' 1000000 loops, best of 3: 0.625 usec per loop Seems f'{x!s}' is the fastest way to stringify a value. Thus there is an opportunity to speed up default formatting by special casing PyObject_Format() for most popular types (str and int).

Content

Yet one case for comparison (with msg270095):

$ ./python -m timeit -s "x = 2" -- 'f"X is {x!s}"'
1000000 loops, best of 3: 0.625 usec per loop

Seems f'{x!s}' is the fastest way to stringify a value. Thus there is an opportunity to speed up default formatting by special casing PyObject_Format() for most popular types (str and int).

History
Date	User	Action	Args
2016-07-13 18:09:17	serhiy.storchaka	set	recipients: + serhiy.storchaka, mjpieters, eric.smith, ztane, Demur Rumed
2016-07-13 18:09:17	serhiy.storchaka	set	messageid: <1468433357.54.0.69984287225.issue27078@psf.upfronthosting.co.za>
2016-07-13 18:09:17	serhiy.storchaka	link	issue27078 messages
2016-07-13 18:09:17	serhiy.storchaka	create