Random Word From List

import sys
import random
# http://www.pillalamarri.in/python/random-word-from-list/
# check if filename is supplied as a command line argument
if sys.argv[1:]:
    filename = sys.argv[1]
else:
    filename = input("What is the name of the file? (extension included): ")

try:
    file = open(filename)
except (FileNotFoundError, IOError):
    print("File doesn't exist!")
    exit()
# handle exception

# get number of lines
num_lines = sum(1 for line in file if line.rstrip())

# generate a random number between possible interval
random_line = random.randint(0, num_lines)

# re-iterate from first line
file.seek(0)

for i, line in enumerate(file):
    if i == random_line:
        print(line.rstrip())  # rstrip removes any trailing newlines :)
        break
# http://www.pillalamarri.in/python/random-word-from-list/