script.py

import os
import sys


def find_min():
    # implement your logic here
    pass


def print_usage():
    print("Usage:- python {} space-separated-integers".format(
        os.path.basename(__file__),
    ))


def parse_arg():
    parsed_list = []
    for value in sys.argv[1:]:
        try:
            parsed_list.append(int(value))
        except ValueError:
            print_usage()
            exit(1)
    return parsed_list


if __name__ == "__main__":
    if len(sys.argv) > 1:
        input_list = parse_arg()
        find_min()
    else:
        print_usage()
        exit(1)

# python script.py 1 2 3 5 7 8