#!python3
# coding: utf-8
"""Trim white space from end of line."""

import sys

if len(sys.argv) < 2:
    sys.exit("Usage: eol.py FILENAME[S]")

for filename in sys.argv[1:]:
    try:
        with open(filename, "r") as finp:
            lines = finp.readlines()
    except Exception as err:
        print(err)
    else:
        with open(filename, "w") as fout:
            for line in lines:
                fout.write(line.rstrip()+"\n")