问XKCD类密码短语到stdout

EN

# iterable=['test','correct','horse','battery','staple']
## Change the file specified here to your dictionary file
iterable = [i.strip().split() for i in open("wordList.txt").readlines()]

def permutations(iterable, r=None, s=''):
    pool = tuple(iterable)
    n = len(pool)
    r = n if r is None else r
    if r > n:
        #return
        r = n # Lets assume users want all permutations
    indices = range(n)
    cycles = range(n, n-r, -1)
    temp = tuple(pool[i] for i in indices[:r])
    for item in temp: # iterate through the current tuple and turn it into a string, to get rid of brackets and such
        print s.join([str(i[0]) for i in temp])
    while n:
        for i in reversed(range(r)):
            cycles[i] -= 1
            if cycles[i] == 0:
                indices[i:] = indices[i+1:] + indices[i:i+1]
                cycles[i] = n - i
            else:
                j = cycles[i]
                indices[i], indices[-j] = indices[-j], indices[i]
                temp = tuple(pool[i] for i in indices[:r])
                for item in temp:
                    print s.join([str(i[0]) for i in temp])
                break
        else:
            return

# The first value relates to our variable (dictionary file) at the top
# The second value is the number of words we want to combine, a 2 would indicate 2 
## word combinations, such as correct.horse, 3 would be correct.horse.staple
# The third value is the seperater, such as . in the example above, to create words
## that run together enter nothing, or ''
permutations(iterable, 2, '.')