def is_valid_IP(string):

    parts = string.split(".")

    if len(parts) != 4:
        print('Ip False')
        return False


    for item in parts:

        if not item.isdigit():

            print('Ip False')

        if len(item) > 1 and item[0] == '0':

            print('Ip False')


        i = int(item)
        if i < 0 or i > 255:

            print('Ip False')


    print('Ip True')



is_valid_IP('0.0.0.0')