determine the odd and even number from input

oddeven.py

#!/usr/bin/python3
import sys

def main():
    num = input("please enter the number : ")
    if num.isnumeric() != True:
        print("Please enter the number")
        sys.exit(1)
    if num % 2 == 0:
        print("this number is even")
    else:
        print("this number is odd")
        
if __name__ == '__main__':
    main()