Python_Basics/python_programs/line_count.py at master · learnbyexample/Python_Basics · GitHub

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#!/usr/bin/python3

import sys, pathlib, subprocess, re

if len(sys.argv) != 2:

sys.exit("Error: Please provide exactly one filename as argument")

program_name = sys.argv[0]

filename = sys.argv[1]

if not pathlib.Path(filename).is_file():

sys.exit("File '{}' not found".format(filename))

if re.search(r'line_count.py', program_name):

lc = subprocess.getoutput('wc -l < ' + filename)

print("No. of lines in '{}' is: {}".format(filename, lc))

elif re.search(r'word_count.py', program_name):

wc = subprocess.getoutput('wc -w < ' + filename)

print("No. of words in '{}' is: {}".format(filename, wc))

else:

sys.exit("Program name '{}' not recognized".format(program_name))

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