wc.py

#! /usr/bin/python3

import sys

## The argument vector is a list of command line inputs

if len(sys.argv)>1:

    filename = sys.argv[1]

    file_h = open(filename,"r")
    content = file_h.read()
else:
    #No command line input!  REad from stdin.

    content = sys.stdin.read()


wordcount = len(content.split())
linecount = content.count("\n")
charcount = len(content)
print("{} {} {}".format(linecount,wordcount,charcount))