'return' outside of function

import random
import os
import sys 


words = [ 'apple', 'bananna', 'orange', 'pear', 'strawberry', 'coconut', 'melon' ]

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

def draw(good_guesses, bad_guesses, secret_word):
    clear()

    print('Strikes {}/7'.format(len(bad_guesses)))


    for letter in bad_guesses:
        print(letter, '')


    for letter in secret_word:
        if letter in good_guesses:
                print(letter, end='')
        else:
            print('_', end='')
        print('\n\n')       
    print('')

    def get_guess(bad_guesses, good_guesses):
        while True:
            guess = input('Guess a letter: ').lower()
            if len(guess) != 1:
                print("You can only guess a single letter: ")


            elif guess in bad_guesses or guess in good_guesses:
                print("You've already guessed that letter!")


            elif not guess.isalpha():
                print("You can only guess letters!! ")

            else:
                return guess 

def play(done):
    clear()
    secret_word = random.choice(words)
    bad_guessses = []
    good_guesses = []

while True:
    draw(bad_guesses, good_guesses, secret_word)
    guess = get_guess(bad_guesses, good_guesses)

    if guess in secret_word:
        good_guesses.append(guess)
        found = True 
        for letter in secret_word:
            if letter not in good_guesses:
                found = False 
        if found:
            print("You win!!!")
            print("The secret word was {}".format(secret_word))
            done = True 
    else:
        bad_guesses.append(guess)
        if len(bad_guesses) == 7:
            draw(bad_guesses, good_guesses, secret_word)
            print("You lost!!")
            print("The secret word was {}".format(secret_word))
            done = True 


    if done:
        play_again = input("Play again? Y/n").lower()
        if play != 'n':
            return play(done=False)
        else:
            sys.exit()

def welcome():  
    start = input("Press enter/return  or Q to quit").lower()
    if start.lower() == 'q':
        print("BYE!!")
        sys.exit
    else:
        return True

print('Welcome to Letter Guess!')

done = False 

while True:
    clear()
    welcome()
    play()