Question

我跟着如何像计算机科学家一样思考，我遇到了这个错误。这是代码：

class Card:
    suitList = ["Clubs", "Diamonds", "Hearts", "Spades"]
    rankList = ["narf", "Ace", "2", "3", "4", "5", "6", "7", "8",
                "9", "10", "Jack", "Queen", "King"]

def __init__(self, suit=0, rank=2):
    self.suit = suit
    self.rank = rank

def __str__(self):
    return (self.rankList[self.rank] + " of " +
            self.suitList[self.suit])

def __cmp__(self, other):
    if self.suit == 1: return 1
    if self.suit > other.suit: return 1
    if self.suit < other.suit: return -1
    if self.rank > other.suit: return 1
    if self.rank < other.suit: return -1
    return 0


class Deck:
    def init(self):
        self.cards = [Card(suit, rank) for suit in range(4) for rank in range(1,14)]

def __str__(self):
    s = ""
    for i in range(len(self.cards)):
        s = s + " "*i + str(self.cards[i]) + "\n"
    return s

def shuffle(self):
    import random
    nCards = len(self.cards)
    for i in range(nCards):
        j = random.randrange(i, nCards)
        self.cards[i], self.cards[j] = self.cards[j], self.cards[i]

def removeCard(self, card):
    if card in self.cards:
        self.cards.remove(card)
        return True
    else:
        return False

def popCard(self):
    return self.cards.pop()

def isEmpty(self):
    return (len(self.cards) == 0)

def deal(self, hands, nCards = 999):
    nHands = len(hands)
    for i in range(nCards):
        if self.isEmpty(): break
        card = self.popCard()
        hand = hands[i % nHands]
        hand.addCard(card)


class Hand(Deck):
    def init(self, name=""):
        self.cards = []
        self.name = name

def addCard(self, card):
    self.cards.append(card)

def __str__(self):
    s = "Hand " + self.name
    if self.isEmpty():
        return s + " is empty\n"
    else:
        return s + " contains\n" + Deck.__str__(self)


class CardGame:
    def init(self):
        self.deck = Deck()
        self.deck.shuffle()

class OldMaidHand(Hand):
    def removeMatches(self):
        count = 0
        originalCards = self.cards[:]
        for card in originalCards:
            match = Card(3 - card.suit, card.rank)
            if match in self.cards:
                self.cards.remove(card)
                self.cards.remove(match)
                print "Hand %s: %s matches %s" % (self.name, card, match)
                count = count + 1
        return count

我得到的错误：

Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
hand.removeMatches()
File "C:\Users\Lin\projects\thinkcs\cardgame.py", line 89, in  removeMatches
self.cards.remove(match)
ValueError: list.remove(x): x not in list

Answer 1

我在public override void Initialize(string name, NameValueCollection config) { base.Initialize(name ?? GetType().Name, config); }类的__cmp__()函数中看到了一个问题 -

Card

你确定要比较等级和套装吗？也许这就是造成这个问题的原因？

ValueError：list.remove（x）：虽然传递了条件检查，但x不在列表中

1 个答案: