#anagrams.py
#using the  words_merged.txt  list

import random

words = open("words_merged.txt").read().split()   
words.sort(key=lambda s: len(s))
print("#words:",len(words))

word_length = int(input("Length of anagrams you want (1-22): "))
if word_length<1 or word_length>22:    # antidisestablishmentarianism is out
    print("Invalid length. Quitting")
    exit()
          
#start and stop index of words of this length:
start = 0
while len(words[start]) < word_length:
    start += 1
stop = start
while len(words[stop]) == word_length:
    stop += 1
#print(words[start],words[stop-1], "  #words this length:",stop-start)
print("  #words this length:",stop-start)

another = True
while another:
    chosen_word = words[random.randint(start,stop-1)]
    derangement = False
    while not derangement:
        l = list(chosen_word)
        random.shuffle(l)
        anagram = ''.join(l)
        if anagram != chosen_word:
            derangement = True
    print("\n",anagram)
    show = input("Show the word? (y or n) ")
    if show!='n':
        print(chosen_word)