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# 如果有一个选择结构来决定实现不同的类,再面向对象设计里面一般把这个选择做成一个类,叫做工厂模式
# 定义一个ProductFactory类, 用于创建不同类型的商品实例( 如电子产品、书籍等) 。具体的产品由子类实现。
#
class Product :
def __init__ ( self , name , price ) :
self . name = name
self . price = price
class Electronic ( Product ) :
def __init__ ( self , name , price , brand ) :
super ( ) . __init__ ( name , price )
self . brand = brand
class Book ( Product ) :
def __init__ ( self , name , price , author ) :
super ( ) . __init__ ( name , price )
self . author = author
class ProductFactory :
@staticmethod
def create_product ( product_type , * args , * * kwargs ) :
if product_type == ' electronic ' :
return Electronic ( * args , * * kwargs )
elif product_type == ' book ' :
return Book ( * args , * * kwargs )
else :
raise ValueError ( " Invalid product type " )
# 使用工厂方法创建产品
product = ProductFactory . create_product ( ' book ' , ' Python编程艺术 ' , 50.0 , ' Mark Lutz ' )