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实现纸牌游戏的随机抽牌洗牌过程(item系列几个内置方法的实例)

作者:互联网

实现纸牌游戏的随机抽牌洗牌过程(item系列几个内置方法的实例)

 

1、namedtuple:命名元组,可以创建一个没有方法只有属性的类
from collections import namedtuple card = namedtuple('card',['rank','suit']) # rank 牌面大小,suit牌面的花色 # card其实就是namedtuple创建的一个类,其属性就是rank和suit c1 = card(2,'红心 ') # c1是实例化的对象 print(c1) print(c1.suit)

运行结果:

card(rank=2, suit='红心 ')
红心2

 

2、按照循环顺序,通过对象[索引]任意取牌
from collections import namedtuple Card = namedtuple('Card',['rank','suit']) # rank 牌面大小,suit牌面的花色 class FranchDeck: ranks = [str(n) for n in range(2,11)]+list('JQKA') suits = ['红心','方板','梅花','黑桃'] def __init__(self): self._cards = [Card(rank,suit) for rank in FranchDeck.ranks for suit in FranchDeck.suits] # 嵌套循环,每循环一次都拿到一张牌,并且都会存到一个列表中,这个里面的牌是按照循环的顺序的 def __getitem__(self, item): return self._cards[item] deck = FranchDeck() print(deck[10]) # 出现对象加索引的的取法就是触发__getitem__方法

运行结果:

Card(rank='4', suit='梅花')

Process finished with exit code 0

 

3、choice实现随机抽取一张纸牌的过程
from collections import namedtuple Card = namedtuple('Card',['rank','suit']) # rank 牌面大小,suit牌面的花色 class FranchDeck: ranks = [str(n) for n in range(2,11)]+list('JQKA') suits = ['红心','方板','梅花','黑桃'] def __init__(self): self._cards = [Card(rank,suit) for rank in FranchDeck.ranks for suit in FranchDeck.suits] # 嵌套循环,每循环一次都拿到一张牌,并且都会存到一个列表中,这个里面的牌是按照循环的顺序的 def __getitem__(self, item): return self._cards[item] def __len__(self): return len(self._cards) # 实现按照循环循序抽取对应的纸牌 deck = FranchDeck() print(deck[10]) # 出现对象加索引的的取法就是触发__getitem__方法 # 实现随机抽取一张牌的过程 from random import choice print(choice(deck)) # 注意:# choice能够实现随机抽取纸牌,必须得依赖__len__方法,如果前面没有定义__len__方法就会报错,
# 即只要用到choice就会触发__len__方法

运行结果:

Card(rank='A', suit='梅花')

Process finished with exit code 0

 

4、shuffle实现随机洗牌的过程
from collections import namedtuple Card = namedtuple('Card',['rank','suit']) # rank 牌面大小,suit牌面的花色 class FranchDeck: ranks = [str(n) for n in range(2,11)]+list('JQKA') suits = ['红心','方板','梅花','黑桃'] def __init__(self): self._cards = [Card(rank,suit) for rank in FranchDeck.ranks for suit in FranchDeck.suits] # 嵌套循环,每循环一次都拿到一张牌,并且都会存到一个列表中,这个里面的牌是按照循环的顺序的 def __getitem__(self, item): return self._cards[item] def __len__(self): return len(self._cards) # 传纸牌的长度,是从这么多张纸牌里面抽取 def __setitem__(self, key, value): self._cards[key] = value deck = FranchDeck() print(deck[10]) # 通过shuffle和__setitem__实现随机洗牌的过程,如果前面没有定义__setitem__方法同样会报错
# 因为随机洗牌的过程索引对应的牌就会发生改变,所以只能通过__setitem__去改变
from random import shuffle shuffle(deck) print(deck[10])

运行结果:

Card(rank='4', suit='梅花')
Card(rank='K', suit='红心')
总结:
以上纸牌游戏实现随机抽牌,洗牌的过程,仅仅只是用了内置的方法,并没有用我们自己定 义的方法就实现了,需要注意的是: __getitem__与对象[索引],__len__与choice,__setitem__与shuffle
必须同时结合使用
内置函数,内置模块,内置的基础类型<---->类的内置方法,比如:== <--->__eq__,len()<--->__len__

 

5、总代码----纸牌游戏随机取牌以及洗牌的过程
# 按照循环顺序,通过对象[索引]任意取牌
# choice实现随机抽取一张纸牌的过程
# shuffle实现随机洗牌的过程
import json
from collections import namedtuple
Card = namedtuple('Card',['rank','suit'])  # rank 牌面大小,suit牌面的花色
class FranchDeck:
    ranks = [str(n) for n in range(2,11)]+list('JQKA')
    suits = ['红心','方板','梅花','黑桃']
    def __init__(self):
        self._cards = [Card(rank,suit) for rank in FranchDeck.ranks for suit in FranchDeck.suits]
        # 嵌套循环,每循环一次都拿到一张牌,并且都会存到一个列表中,这个里面的牌是按照循环的顺序的

    def __getitem__(self, item):  # 通过对象[索引]进行触发
         return self._cards[item]

    def __len__(self):  # 通过choice进行触发
         return len(self._cards)  # 传纸牌的长度,是从这么多张纸牌里面抽取

    def __setitem__(self, key, value):  # 通过shuffle进行触发
        self._cards[key] = value

    def __str__(self):
         return json.dumps(self._cards,ensure_ascii=False)  # 序列化

deck = FranchDeck()

# 通过对象[索引]和__getitem__实现按照循环循序抽取对应的纸牌
print(deck[10])  # 出现对象加索引的的取法就是触发__getitem__方法

# 通过choice和__len__实现随机抽取一张牌的过程
from random import choice
print(choice(deck))
# choice能够实现随机抽取纸牌,必须得依赖内置的__len__方法,如果前面没有定义__len__方法就会报错
print(deck[10])

# 通过shuffle和__setitem__实现随机洗牌的过程
from random import shuffle
shuffle(deck)
print(deck[10])
print(deck)  # 需要进行序列化才可以

print(deck[:5])  # 直接利用对象进行切片

运行结果:

Card(rank='4', suit='梅花')
Card(rank='A', suit='红心')
Card(rank='4', suit='梅花')
Card(rank='A', suit='梅花')
[["6", "梅花"], ["9", "梅花"], ["3", "梅花"], ["9", "方板"], ["4", "方板"], ["Q", "红心"], ["7", "红心"], ["J", "黑桃"], ["8", "梅花"], ["J", "红心"], ["A", "梅花"], ["6", "黑桃"], ["Q", "方板"], ["4", "梅花"], ["10", "红心"], ["A", "红心"], ["4", "红心"], ["7", "方板"], ["5", "黑桃"], ["K", "黑桃"], ["2", "方板"], ["Q", "梅花"], ["2", "黑桃"], ["8", "黑桃"], ["J", "梅花"], ["A", "黑桃"], ["2", "红心"], ["6", "红心"], ["5", "红心"], ["J", "方板"], ["10", "方板"], ["K", "方板"], ["K", "红心"], ["3", "红心"], ["8", "红心"], ["8", "方板"], ["5", "方板"], ["K", "梅花"], ["9", "红心"], ["5", "梅花"], ["7", "黑桃"], ["3", "方板"], ["Q", "黑桃"], ["2", "梅花"], ["7", "梅花"], ["4", "黑桃"], ["9", "黑桃"], ["10", "梅花"], ["6", "方板"], ["3", "黑桃"], ["10", "黑桃"], ["A", "方板"]]
[Card(rank='6', suit='梅花'), Card(rank='9', suit='梅花'), Card(rank='3', suit='梅花'), Card(rank='9', suit='方板'), Card(rank='4', suit='方板')]

标签:__,纸牌,红心,self,rank,item,suit,抽牌,Card
来源: https://www.cnblogs.com/wxm422562/p/12099126.html