How to subtract minutes from a python time object

Question

If I have a python time object

import datetime
my_time = datetime.time(2,30,00)

What is the best way of subtracting ten minutes from "my_time"? Please note if time is 00:05:00 for example, expected result of this subtraction is 23:55:00.

I found a way to do it, but it feels like there's probably a better way. Also, I will prob have issues with timezone, using this way. Here it is:

import datetime 
my_time = datetime.time(2,30,00)
temp_date = datetime.datetime.combine(datetime.datetime.today(), my_time)
temp_date = temp_date - datetime.timedelta(minutes=10)
my_time = temp_date.time()

So essentially I first convert time back to datetime, do the operation I want, and then convert it back to time.

Answer 1

One way is to make a timedelta object, which supports subtraction.

from datetime import timedelta

time_1 = timedelta(hours=2, minutes=30, seconds=00)
time_2 = timedelta(hours=00, minutes=5, seconds=00)
delta = timedelta(minutes=10)

print(time_1 - delta)
print(time_2 - delta)

# Out
# 2:20:00
# -1 day, 23:55:00