Question

def shuffledCards():

    CardList = ["AC","AD","AH","AS",
                "KC","KD","KH","KS",
                "JC","JK","JH","JS",
                "QC","QK","QH","QS",
                "2 C", "2 D", "2 H", "2 S",
                "3 C", "3 D", "3 H", "3 S",
                "4 C", "4 D", "4 H", "4 S",
                "5 C", "5 D", "5 H", "5 S",
                "6 C", "6 D", "6 H", "6 S",
                "7 C", "7 D", "7 H", "7 S",
                "8 C", "8 D", "8 H", "8 S",
                "9 C", "9 D", "9 H", "9 S",]

    cardAmount = len(CardList)
    shuffledDeck = []
    for I in range(0,cardAmount):
        randIndex = randint(0,cardAmount - I - 1)
        shuffledDeck.append(CardList[randIndex])
        del CardList [randIndex]
    return shuffledDeck



## At this point we need to draw cards

def drawCard(shuffledDeck):

    if shuffledDeck <= 0:
        shuffledCards()
    else:
        card = shuffledDeck[0]
        del shuffledDeck[0]
    return card     



def main():
    shuffledCards()
    print(shuffledCards())
    drawCard(shuffledDeck)
    print(shuffledCards())
    print (card)


main()

当我运行该程序时，它打印出shuffledCards但是它给我一个错误，drawCard(shuffledDeck)说没有定义shuffledDeck。

这是输出：

[＆＃39; 8 D＆＃39;，＆＃39; 4 D＆＃39;，＆＃39; AS＆＃39;，＆＃39; 8 H＆＃39;，＆＃39; 4 H＆＃ 39;，＆＃39; 2 S＆＃39;，＆＃39; QC＆＃39;，＆＃39; QS＆＃39;，＆＃39; 3 D＆＃39;，＆＃39; AC＆＃39;，＆＃39; 9 S＆＃39;，＆＃39; JS＆＃39;，＆＃39; QK＆＃39;，＆＃39; 2 C＆＃39;，＆＃39; 9 H＆＃39;，＆＃ 39; 5 H＆＃39;，＆＃39; JC＆＃39;，＆＃39; 2 D＆＃39;，＆＃39; 6 C＆＃39;，＆＃39; KS＆＃39;，＆＃39; 9 D＆＃39;，＆＃39; 9 C＆＃39;，＆＃39; 5 C＆＃39;，＆＃39; AH＆＃39;，＆＃39; 2 H＆＃39;，＆＃39; AD＆＃39;，＆＃39; 7 D＆＃39;，＆＃39; KC＆＃39;，＆＃39; 6 D＆＃39;，＆＃39; KD＆＃39;，＆＃39; 3 S＆＃39 ;＆＃39; 5 S＆＃39;，＆＃39; 7 H＆＃39;，＆＃39; JH＆＃39;，＆＃39; 7 S＆＃39;，＆＃39; 6 H＆＃39; ，＆＃39; 7 C＆＃39;，＆＃39; JK＆＃39;，＆＃39; 8 S＆＃39;，＆＃39; 6 S＆＃39;，＆＃39; 3 H＆＃39;，＆＃39; 4 S＆＃39;，＆＃39; 4 C＆＃39;，＆＃39; QH＆＃39;，＆＃39; 5 D＆＃39;，＆＃39; KH＆＃39;，＆＃ 39; 3 C＆＃39;，＆＃39; 8 C＆＃39;]

追踪（最近一次通话）：         文件＆＃34; E：\犹他大学\ 2015年秋季\ EAE 1410 \家庭作业\作业5 \ HW05_Blackjack.py＆＃34;，第71行，           主要（）         文件＆＃34; E：\犹他大学\ 2015年秋季\ EAE 1410 \家庭作业\作业5 \ HW05_Blackjack.py＆＃34;，第66行，主要           的drawcard（shuffledDeck）       NameError：name＆＃39; shuffledDeck＆＃39;未定义

Answer 1

在函数内声明的变量是该函数的本地变量（如果您认为它可以作为全局函数使用）。你返回甲板，但不要保存它。我认为＆＃34; def main（）的第一行：＆＃34;应该是：

shuffledDeck = shuffledCards()

Python错误＆＃34;函数未定义＆＃34;

1 个答案: