def findAllSubs(word, let):
    out = []
    while word.find(let) + 1:
        p = word.find(let)
        out += [p]
        word = word[0:p] + "_" + word[p+1:]
    return out

def get_placeholders(word):
    return " ".join([("_", l)["_" == word[i]] for i, l in enumerate(word)])

def check_solved(word):
    return len(word.split("_")) == len(word) + 1

def check(usedstr, let):
    if len(let) != 1:
        print("Нужно ввести букву!")
        return None
    if let in usedstr:
        print("Вы уже вводили эту букву!")
        return None
    return let

def main():
    words = []
    usedstr = ""
    solved = False
    tries = 0
    word = "кошка"# random from 'words'
    bk = word[::]

    while 1 :
        if (tries >= 9 or check_solved(word)):
            break
        placeholders = get_placeholders(word)
        print(placeholders)
        a = None
        while not a:
            a = check(usedstr, input("Введите букву: ").lower())
        a = a.lower()
        k = findAllSubs(word, a)
        if len(k) == 0:
            print("Такой буквы нет! осталось попыток:", 9 - tries)
            tries += 1
            continue
        word = word.replace(a, "_")
        usedstr += a
    if tries == 9:
        print("Вы умерли! Слово было:", bk)
    else:
        print("GG, U WIN! Попыток:", tries)

main()