Python工厂函数用法实例分析

#!/usr/bin/python
class Card:
    def __init__(self,rank,suit):
       self.suit = suit
       self.rank = rank
       self.hard,self.soft =self._points()
classNumberCard(Card):
    def _points(self):
       returnint(self.rank),int(self.rank)
classAceCard(Card):
    def _points(self):
       return 1,11
classFaceCard(Card):
    def _points(self):
       return 10,10
class Suit:
    def __init__(self,name,symbol):
       self.name = name
       self.symbol = symbol
defcard(rank,suit):
    if rank == 1:
       return AceCard('A',suit)
    elif 2 <= rank < 11:
       return NumberCard(str(rank),suit)
    elif 11 <= rank < 14:
       name ={11:'J',12:'Q',13:'K'}[rank]
       return FaceCard(name,suit)
    else:
       raise Exception("Rank out ofrange")

Club,Diamond,Heart,Spade=Suit('Club','CCC'),Suit('Diamond','DDD'),Suit('Heart','HHH'),Suit('Spade','SSS')
deck =[card(rank,suit)
    for rank in range(1,14)
       for suit in(Club,Diamond,Heart,Spade)]