from datetime import timedelta, datetime
now = datetime.now()
print("Today is:-",now)
print("600 hours later than today will be", str(now + timedelta(hours=600)))from datetime import timedelta, datetime
print(datetime.now(), str(datetime.now() + timedelta(weeks = 1, days = 2, hours = 3, minutes = 4,
seconds = 5, milliseconds = 6, microseconds = 7)))>>> # convert string in iso 8601 date dime format to python datetime type
>>> import datetime
>>> datetime.datetime.strptime('2020-06-19T15:52:50Z', "%Y-%m-%dT%H:%M:%SZ")
datetime.datetime(2020, 6, 19, 15, 52, 50)