How to convert epoch time with nanoseconds to human-readable?

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First, convert it to a datetime object with second precision (floored, not rounded):

>>> from datetime import datetime
>>> dt = datetime.fromtimestamp(1360287003083988472 // 1000000000)
>>> dt
datetime.datetime(2013, 2, 7, 17, 30, 3)

Then to make it human-readable, use the strftime() method on the object you get back:

>>> s = dt.strftime('%Y-%m-%d %H:%M:%S')
>>> s
'2013-02-07 17:30:03'

Finally, add back in the nanosecond precision:

>>> s += '.' + str(int(1360287003083988472 % 1000000000)).zfill(9)
>>> s
'2013-02-07 17:30:03.083988472'

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