python datetime.datetime.strptime format code example

Example 1: datetimes to day of year python

>>> import datetime
>>> today = datetime.datetime.now()
>>> print today
2009-03-06 15:37:02.484000
>>> today.strftime('%j')
'065'

Example 2: timestamp 1601825400 in python

from datetime import datetime

timestamp = 1545730073
dt_object = datetime.fromtimestamp(timestamp)

print("dt_object =", dt_object)
print("type(dt_object) =", type(dt_object))