# filecase.py
# Written by Todd Wareham for CS 2500
"""
Given the name of a text file as a command-line argument, determines
 the case (lower / upper / mixed) of the letters in the file.
"""

import sys

if len(sys.argv) != 2:
    print "uasge:", sys.argv[0], " filename"
    sys.exit(1)

f = open(sys.argv[1], "r")
line = f.read()
f.close

if line.islower():
    print "File is lower case"
elif line.isupper():
    print "File is upper case"
else:
    print "File is mixed case"