#hangman.py
#using the  words_merged.txt  list

from random import randint

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

word_length = int(input("Length of word 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)

chosen_word = words[randint(start,stop-1)]
print(chosen_word)      #comment out this line if you really want to play Hangman

user_string_list = ["_" for i in range(word_length)]
print("Your progress:","".join(user_string_list))
guesses = 0

while user_string_list.count('_') > 0:   #until no _'s
    guess_char = input("Guess a letter: ").lower()
    if not guess_char.isalpha() or len(guess_char)!=1:
        print("That's not a single letter")
        continue
    guesses += 1
    hits = chosen_word.count(guess_char)
    #print("hits:",hits)
    if hits == 0:
        print("That letter is not in the word")
    else:
        i = -1
        while hits > 0:
            i += 1
            while chosen_word[i] != guess_char:
                i += 1
            user_string_list[i] = guess_char
            hits -= 1
        print("Your progress:","".join(user_string_list))

print("Congratulations")
print("#guesses:",guesses)