A common scenario involving date and times involve performing mathematical operations on dates and times themselves. For example when you want to calculate number of days, events or you want to find out what is the next date and time than we use timedelta class in python to find out these operations.

#!/usr/bin/python3
from datetime import time
from datetime import date
from datetime import datetime
from datetime import timedelta

def main():
    #construct a basic timedelta and print it
    print(timedelta(days=365, hours = 5, minutes=1))
if __name__ == "__main__": main() 

Reference: http://learnopenerp.blogspot.com/2018/02/python-timedelta.html