我决定制作一个二十一点游戏，我已经完成了，我唯一的问题是有时当你选择再次播放时，程序使用相同的变量值。我很确定我已经将问题隔离到嵌套的while循环，我的代码可以在这里找到：https://pastebin.com/9zr9qCU6我试图让resetGame()函数返回dealer_hand和player_hand的空列表对象但是没有修复它，是否有从这些嵌套的while循环中继续主要while循环的方法？或者我是否必须将每个嵌套的while循环重构为一个单独的函数？
码：
# Blackjack
import random
from card_deck import Deck
from time import sleep
from sys import exit
d = Deck()
deck_of_cards = d.deck_return()
print('*' * 30)
print('* Welcome to BlackJack! *')
print('* Made by: p0seidon *')
print('*' * 30)
def shuffleDeck(deck):
random.shuffle(deck)
random.shuffle(deck)
random.shuffle(deck)
return deck
def dealCard(shuffled_deck):
return random.sample(shuffled_deck, k=2)
def removeFromDeck(hand1, hand2):
global deck_of_cards
for x in hand1:
deck_of_cards.remove(x)
for x in hand2:
deck_of_cards.remove(x)
def hit(deck_to_hit):
return random.choice(deck_to_hit)
def endGame():
print('Thanks for playing!\n'
'Better luck next time!')
sleep(3)
exit()
def restartGame():
restart = ''
restart_list = ['y', 'n']
while restart not in restart_list:
restart = input('Would you like to play again? [y/n]: ')
return restart
def resetGame():
global deck_of_cards
print('Loading new deck.\n'
'Please wait...')
sleep(3)
deck_of_cards = d.deck_return()
return deck_of_cards
play_again = 'y'
while play_again == 'y':
# shuffles and deals 2 cards to dealer and player
ready_deck = shuffleDeck(deck_of_cards)
dealer_hand = dealCard(ready_deck)
player_hand = dealCard(ready_deck)
# removes the cards in players hand from the deck, making the game a little more life-like
removeFromDeck(dealer_hand, player_hand)
# checks to see if dealer won in the first hand
if sum(dealer_hand) == 21:
print('Dealer\'s first hand is', dealer_hand, 'totaling 21.\n'
'You lose!')
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
# check to see if player won or busted in the first hand
if sum(player_hand) == 21:
print('You win with the initial hand of', player_hand, '\n'
'CONGRATULATIONS!')
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
elif sum(player_hand) > 21:
print('Looks like you busted in your first hand consisting of', player_hand, '\n'
'Better luck next time!')
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
# shows only one of the dealers card at random and shows the player his hand
print('DEBUG: dealers hand:', dealer_hand)
# print('Dealer has', dealer_hand[random.randint(0, 1)], 'the other card is hidden')
print('You have', player_hand)
# sums the cards in players hand and dealers hand
player_sum = sum(player_hand)
dealer_sum = sum(dealer_hand)
# player logic
while player_sum < 21:
choice = input('Would you like to hit or stay (h/s)?: ')
if choice == 'h':
new_player_card = hit(ready_deck)
player_hand.append(new_player_card)
print('Current hand:', player_hand)
player_sum += new_player_card
if player_sum == 21: # player wins on hit
print('You win!\n'
'Winning hand:', player_hand)
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
elif play_again == 'n':
endGame()
elif player_sum > 21: # player busts on hit
print('looks like you went overboard. Your final hand was:', player_hand)
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
elif choice == 's':
print('You locked in at', player_sum)
sleep(2)
break
# dealer logic
while dealer_sum < 17:
print('Dealers hand:', dealer_hand)
print('Dealer hits..')
sleep(1)
new_dealer_card = hit(ready_deck)
dealer_hand.append(new_dealer_card)
sleep(0.5)
dealer_sum += new_dealer_card
if dealer_sum > 21: # dealer busts on hit
print('Dealer has busted!\n'
'You Win!')
print('Dealers losing hand:', dealer_hand)
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
elif 17 < dealer_sum <= 21: # dealer stays
print('Dealers hand:', dealer_hand)
print('Dealer stays..')
sleep(1)
break
# compares player sum with dealer sum to determine who won
if player_sum > dealer_sum:
print('You win!\n'
'Your winning hand:', player_hand, '\n'
'Dealers losing hand:', dealer_hand)
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
elif dealer_sum > player_sum:
print('Looks like you were unlucky this time...Dealer won..\n'
'Dealer winning hand:', dealer_hand)
play_again = restartGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
elif player_hand == dealer_hand:
print('Its a tie!')
sleep(0.5)
print('Your hand:', player_hand)
sleep(0.5)
print('Dealers hand:', dealer_hand)
sleep(0.5)
play_again = resetGame()
if play_again == 'y':
deck_of_cards = resetGame()
continue
elif play_again == 'n':
endGame()
`
有没有办法从这些嵌套的while循环中继续main while循环？
没有。看到Python doc，continue总是最内圈。
我是否必须重构每个嵌套while循环到一个单独的函数？
是。那更好。我厌倦了阅读你的代码，因为它很难快速理解。对您的问题更好的模式是这样的：
def play():
while your_condition:
while another_condition:
pass # do something
yesno = input("yes or no?")
if yesno == "y":
return True
terminate = False
while not terminate:
terminate = play()
通过使用return，您可以找到一种方法来将break或continue作为内环的外环。