在Python中定義類

Question

創建一個代表一副牌的類Deck。你的班級應該有以下幾種方法：

• 構造：按照標準順序創建一個52張卡組成的新卡組。
• shuffle：randomnizes卡的順序。
• dealCard：從甲板上方返回一張卡片並將卡片從甲板上移除
• cardsLeft：返回甲板上剩餘卡片的數量。

測試有它從一個洗牌的甲板，其中n是用戶輸入交易出去的n卡序列程序。

class Deck: 

    def __init__(self): 
     self.cardList=[] 
     for suit in ["d","c","h","s"]: 
      for rank in range(1,14): 
       card=PlayingCard(suit, rank) 
       self.cardList.append(card) 
    def shuffle(self): 
    #I DON'T KNOW HOW TO SHUFFLE MY CARDS PLEASE HELP. 
    #self.cardList[pos1] = self.cardList[pos2] 
    #self.cardList[pos2] = self.cardList[pos1] 
    #these two lines above are not working 
    def dealCard(self): 
     return self.cardList.pop() 

    def cardsLeft(self): 
     return len(self.cardList) 

Answer 1

閱讀有關random.shuffle的文檔。它應該對你有很大的幫助！ :)

from collections import namedtuple 
from random import shuffle 

PlayingCard = namedtuple('PlayingCard', "suit rank") 

class Deck: 

    def __init__(self): 
    self.cardList = [PlayingCard(suit, rank) for suit in"dchs" for rank in range(1,14)] 

    def shuffle(self): 
     shuffle(self.cardList) 

    def dealCard(self): 
     return self.cardList.pop() 

    def cardsLeft(self): 
     return len(self.cardList) 

d = Deck() 
d.shuffle() 
print [d.dealCard() for _ in range(5)]