python time(milli seconds) calculation

Question

How to calculate milliseconds,from the code below.

a = datetime.datetime.now()
b = datetime.datetime.now()
c = b - a

>>> c

>>> c.days
0
>>> c.seconds
4
>>> c.microseconds

related: [Get current time in milliseconds in Python?](http://stackoverflow.com/q/5998245/4279) — jfs, Mar 24 '15 at 20:18

score 14 · Accepted Answer · edited Sep 13 '10 at 13:57

14

milliseconds = (c.days * 24 * 60 * 60 + c.seconds) * 1000 + c.microseconds / 1000.0

edited Sep 13 '10 at 13:57

SilentGhost

answered Dec 15 '09 at 05:52

John Machin

2

This answer is wrong!if time delta is 1 minute exactly,result will be 0,not our expect! – starkshang Oct 06 '16 at 16:13

score 13 · Answer 2 · answered Jan 13 '15 at 19:24

13

Or, new since 2.7:

c.total_seconds()*1000

answered Jan 13 '15 at 19:24

zeeMonkeez

2 Answers2