regex - python time format check

Question

At python, I want to check if the input string is in "HH:MM" such as 01:16 or 23:16 or 24:00. Giving true or false by the result.

How can I achieve this by using regular expression ?

Answer 1

You can achieve this without regular expressions:

import time

def isTimeFormat(input):
    try:
        time.strptime(input, '%H:%M')
        return True
    except ValueError:
        return False

>>>isTimeFormat('12:12')
True

>>>isTimeFormat('012:12')
False