How to Validate a Date

import datetime

# The date entered by the user.
date_str = input("Enter a date in dd/mm/yyyy format: ")
try:
    # Try to convert it to a Python date object.
    date = datetime.datetime.strptime(date_str, "%d/%m/%Y").date()
except ValueError:
    print("The date is invalid.")
else:
    print("The date is correct!")