Python 2.7.3-函數未在字符串格式的表中返回正確的值

Question

這是我的Black Jack游戲的當前代碼：

import random
def showMenu():
    userInput = raw_input("Welcome to the game of Black Jack! Please choose an option from the following: \n - Start Game \n - Rules \n - Exit")
    if userInput == "Start Game":
        return maingame()

def maingame():
    done = False
    return cardGenerator()
    print "{0:>4} {01:>18} {02:>20} {03:>18}".format("Player Money", (cards[0], cards[1]), "CPU Cards", "CPU Money")

def getInitialMoney():
    initialdough = 5000

def cardGenerator():
    #Assign a random suit
    suit_card = ["Hearts", "Spades", "Clubs", "Diamond"]
    from random import choice
    #Assign a random number between 1-13 (Ace to King)
    number_card = random.randrange(1,14)
    cards = choice(suit_card), (number_card)


def getDecision():
    getDecision = raw_input("What will you do? \n - Hit \n - Stand")
    if getDecision == "Hit":
        return hit()
    elif getDecision == "Stand":
        return stand()

def hit():
    return cardGenerator()

def stand():
    return opponentphase()

def raise_bet():
    raise_amount = input("How much will you bet?")
    total_pot = 0 + raise_amount


def main():
    maingame()

main()

問題出在maingame（）中。 返回cardGenerator有效調用該函數嗎？ 不知道為什么我不能從字符串格式的列表中為一個值編制索引，直到我現在運行時它什么都沒有返回。

抱歉，如果事情不清楚，我真的很難說清楚我要解釋的內容

Answer 1

在方法maingame() ，您將返回cardGenerator()的結果cardGenerator()由於未返回任何內容，因此返回None ），因此您的方法maingame()永遠不會到達print語句。 我認為您可以進行以下修改：

def maingame():
    done = False
    cards = cardGenerator()
    print "{0:>4} {01:>18} {02:>20} {03:>18}".format("Player Money", (cards[0], cards[1]), "CPU Cards", "CPU Money")

並在cardGenerator() 返回 cards ，因此您可以在maingame()使用它

def cardGenerator():
    #Assign a random suit
    suit_card = ["Hearts", "Spades", "Clubs", "Diamond"]
    from random import choice
    #Assign a random number between 1-13 (Ace to King)
    number_card = random.randrange(1, 14)
    cards = choice(suit_card), (number_card)
    return cards

請注意，您從未聲明過opponentphase()方法（至少它不在您發布的代碼中）。