Line Break Code Error

import random


# make a list of words

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

while True: 
    start = input("Press enter/return to start, or enter Q to quit.")
    if start.lower== 'q':
        break

    # pick a random word
    secret_word = random.choice(words)
    bad_guesses = []
    good_guesses = []

    while len(bad_guesses) < 7 and len(good_guesses) != len(list(secret_word)):          
        # draw spaces
        # draw guessed letters and strikes
        for letter in secret_word:
          if letter in good_guesses:
            print(letter, end='')
          else:
            print('_', end='')

        print('')
        print('Strikes: {}/7'.format(len(bad_guesses))
        print('')      
        # take guess
        guess= input('Guess any letter: ').lower()

        if len(guess) > 1:
            print('You can only guess a single letter!')
            continue
        elif guess in good_guesses or guess in bad_guesses:
            print("You've already guessed that letter!")
            continue
        elif not guess.isalpha():
            print('You can only guess letters!')
            continue

        if guess in secret_word:
            good_guesses.append(guess)
            if len(good_guesses) == len(list(secret_word)):
              print('You win! The word was {}'.format(secret_word))
              break
        else:
              bad_guesses.append(guess)
    else:
        print('You didnt guess it! My secret word was {}'.format(secret_word))


    # print out when you win and lose