#!/usr/bin/env python

import random

def read_words():
    words = {}
    for line in open('woerter.txt'):
        line = line.strip()
        if not line or line.startswith('#'):
            continue
        german, italian = map(str.strip, filter(None, line.split('  ')))
        assert german not in words
        assert italian not in words
        words[german] = italian
        words[italian] = german
    return words

def main():
    words = read_words()
    keys = words.keys()
    total = 0
    correct = 0
    while True:
        key = random.choice(keys)
        answer = raw_input('%s: ' % key)
        if answer.lower() == words[key].lower():
            print 'OK :-)'
            correct += 1
        else:
            print 'KO :-(  --> %s' % words[key]
        total += 1
        print '%d/%d (%2f)' % (correct, total, float(correct)/total)
        print

if __name__ == '__main__':
    main()