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cat_n.py
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executable file
·35 lines (23 loc) · 843 Bytes
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#!/usr/bin/env python3
"""Python version of `cat -n`"""
import argparse
# --------------------------------------------------
def get_args():
"""Get command-line arguments"""
parser = argparse.ArgumentParser(
description='Python version of `cat -n`',
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('file',
metavar='FILE',
type=argparse.FileType('rt'),
help='Input file')
return parser.parse_args()
# --------------------------------------------------
def main():
"""Make a jazz noise here"""
args = get_args()
for i, line in enumerate(args.file, start=1):
print(f'{i:6} {line}', end='')
# --------------------------------------------------
if __name__ == '__main__':
main()