Template for my python Script

template.py

#!/usr/bin/env python

"""
A simple python script template.
"""

from __future__ import print_function
import os
import sys
import argparse


def main(input_file):
    with open(input_file, "r") as in_fd:
        for line in in_fd:
            print(line)

if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('-i', '--in_file', help='provide the path of input data file', type=str)
    args = parser.parse_args()
    if not args.in_file:
        parser.error("Please provide argument for input data file")
    main(args.in_file)
    sys.exit()