tee.py

#! /usr/bin/env python3
""" tee.py - Tee a file. """

import sys


# Parse arguments
file_name = sys.argv[1]

with open(file_name, 'wt') as file_out:
    for n, line in enumerate(sys.stdin):
        file_out.write(line)
        sys.stdout.write(line)

#sys.stderr.write('%d lines\n' % n)