Hangman letter guessing game written in Python.

letter_game2.py

import sys
import random
import os

good_guesses = []
bad_guesses = []

def start():
    clear()
    print(game)
    play_check = input("Welcome to the game. Would you like to start the game? Y/n  ")
    if play_check.lower() == "y":
         play()
    else:
        clear()
        print("Bye!")
        sys.exit()

def play():
    words = [
        'apple',
        'banana',
        'orange',
        'coconut',
        'strawberry',
        'lime',
        'grapefruit',
        'lemon',
        'kumquat',
        'blueberry',
        'melon'
        ]
    clear()
    secrate_word = random.choice(words)

    while len(bad_guesses) < len(secrate_word):
        print("Good guesses: {} ".format(good_guesses))
        print("Bad guesses: {} ".format(bad_guesses))
        user_guess = input("Guess a letter: ").lower()
        answer_check(user_guess, secrate_word, bad_guesses)

def answer_check(user_guess, secrate_word, bad_guesses):
    if not user_guess.isalpha() or len(user_guess) != 1:
        clear()
        print("Wrong input:. You can only input one letter.")
    elif user_guess in good_guesses:
        clear()
        print("You have alrady guessed '{}' it's right. Try another one.".format(user_guess))
    elif user_guess in bad_guesses:
        clear()
        print("You have alrady guessed '{}' it's not right. Try another one.".format(user_guess))
    elif user_guess in secrate_word:
        clear()
        print("Good guess!")
        good_guesses.append(user_guess)
    elif not user_guess in secrate_word:
        clear()
        print("Bad guess!")
        bad_guesses.append(user_guess)

def clear():
    if os.name == 'nt':
        os.system('clr')
    else:
        os.system('clear')

while True:
    start()