getting a syntax error on the letter game. please help

import os
import random
import sys

words = [
  'apple',
  'banana',
  'orange',
  'coconut',
  'strawberry',
  'lime',
  'grapefruit',
  'lemon',
  'blueberry',
  'melon',
]

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

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

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

    for letter in bad_guesses:
        print (letter, end= ' ')
    print ('\n\n')

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

    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 ('already tried that')

        elif not guess.isalpha():
            print('you can onlf guess letters')                    
        else:
            return guess

def play(done):
    clear()
    secret_word = random.choice(words)
    bad_guesses = []
    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)) # missing parentheses
                done = True

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

def welcome():
    start = input('press enter/return to start or q to quit'  ).lower()                      
    if start == 'q': # missing colon 
        print ('bye')
        sys.exit()
    else:
        return True 
print('welcome to letter guess')

done = False

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