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pythondatetimestring-formattingmilliseconds

Format a datetime into a string with milliseconds

How can I format a datetime object as a string with milliseconds?

Solution

  • To get a date string with milliseconds, use [:-3] to trim the last three digits of %f (microseconds):

    >>> from datetime import datetime
>>> datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
'2022-09-24 10:18:32.926'

    Or shorter:

    >>> from datetime import datetime
>>> datetime.utcnow().strftime('%F %T.%f')[:-3]
'2022-09-24 10:18:32.926'

    See the Python docs for more "%" format codes and the strftime(3) man page for the full list.