How to use Python to calculate time

Question

I want to write python script that acts as a time calculator.

For example:

Suppose the time is now 13:05:00

I want to add 1 hour, 23 minutes, and 10 seco

Answer 1

For calculating dates and times there are several options but I will write the simple way:

import datetime
import dateutil.relativedelta

# current time
date_and_time = datetime.datetime.now()
date_only = date.today()
time_only = datetime.datetime.now().time()

# calculate date and time
result = date_and_time - datetime.timedelta(hours=26, minutes=25, seconds=10)

# calculate dates: years (-/+)
result = date_only - dateutil.relativedelta.relativedelta(years=10)

# months
result = date_only - dateutil.relativedelta.relativedelta(months=10)

# days
result = date_only - dateutil.relativedelta.relativedelta(days=10)

# calculate time 
result = date_and_time - datetime.timedelta(hours=26, minutes=25, seconds=10)
result.time()

Hope it helps