#! /usr/bin/python3

import sys

def main():

    # we can start our dictionary with a few items ...
    d = {'cat':'chat', 'kitchen':'cuisine', 'computer':'ordinateur'}
    # ... and add a few more...
    d['cool'] = 'cool'
    d['boredom'] = 'ennui'
    d['end'] = 'fin'

    # check if one word was given to translate
    if len(sys.argv) != 2:
        print('Correct usage: Eng2FrDict  English-word\n')
    # check if given word is in the dictionary
    elif sys.argv[1] not in d:
        print('Cannot translate %s' % sys.argv[1])

    # OK, translate
    else:
        print(d[sys.argv[1]])

main()