Python datetime：如何保持整个'us（微秒）`？

Question

In [25]: datetime.fromtimestamp(15179052980380002/10000000)
Out[25]: datetime.datetime(2018, 2, 6, 17, 21, 38, 38000)

As you can see here, it convert to 38000us instead of 38002us ( us = microsecond)

How can I keep '2' of the right most digit?

Answer 1

You would need nanosecond precision to encode that value - note that you don't have .038002, you have 0.0380002 (extra digit).

This is 38000us (rounded), or 38000200ns.

Answer 2

You can try a simple workaround of storing microseconds separately then replace it into datetime object

>>> timestamp = 15179052980000000
>>> m_seconds = 38002
>>> dt = datetime.fromtimestamp(timestamp/10000000)
>>> dt
>>> datetime.datetime(2018, 2, 6, 16, 21, 38)

Then finally replace the dt with desired microseconds

>>> dt.replace(micorsecond=m_seconds)
>>> dt
>>> datetime.datetime(2018, 2, 6, 16, 21, 38, 38002)