实现享元模式示例，添加服装、服装工厂和客户类，增强代码可读性

2026-01-02 01:34:47 +08:00
parent 4f8d653153
commit 4589debb92
3 changed files with 281 additions and 0 deletions
@@ -0,0 +1,83 @@
+"""
+实例：
+汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
+"""
+
+
+class Clothing:
+    """享元对象 - 服装"""
+
+    style: str
+    size: str
+    color: str
+
+    def __init__(self, style: str, size: str, color: str):
+        self.style = style
+        self.size = size
+        self.color = color
+
+    def show(self):
+        print(f"服装款式: {self.style}, 尺码: {self.size}, 颜色: {self.color}")
+
+
+class ClothingFactory:
+    """享元工厂 - 服装店"""
+
+    _clothing_pool: dict[str, Clothing]
+
+    def __init__(self):
+        self._clothing_pool = {}
+
+    def get_clothing(self, style: str, size: str, color: str) -> Clothing:
+        key = f"{style}-{size}-{color}"
+        if key not in self._clothing_pool:
+            self._clothing_pool[key] = Clothing(style, size, color)
+        return self._clothing_pool[key]
+
+    def show_stock(self):
+        print("\n服装库存:")
+        for key, clothing in self._clothing_pool.items():
+            print(f"Keys: {key} -> ", end="")
+            clothing.show()
+
+
+class Customer:
+    name: str
+    clothing: list[Clothing]
+
+    def __init__(self, name: str):
+        self.name = name
+        self.clothing = []
+
+    def rent_clothing(self, clothing: Clothing):
+        self.clothing.append(clothing)
+        print(f"{self.name} 租了一件服装: ", end="")
+        clothing.show()
+
+    def show_clothing(self):
+        print(f"\n客人{self.name} 租赁的服装有:")
+        for clothing in self.clothing:
+            clothing.show()
+
+if __name__ == "__main__":
+    print("============= 享元模式 =============")
+    factory = ClothingFactory()
+    # 客人1租衣服
+    customer1 = Customer("小红")
+    customer1.rent_clothing(factory.get_clothing("连衣裙", "M", "红色"))
+    customer1.rent_clothing(factory.get_clothing("牛仔裤", "L", "蓝色"))
+    # 客人2租衣服
+    customer2 = Customer("小明")
+    customer2.rent_clothing(factory.get_clothing("连衣裙", "M", "红色"))
+    customer2.rent_clothing(factory.get_clothing("西裤", "S", "白色"))
+
+    print()
+
+    # 显示租赁情况
+    customer1.show_clothing()
+    customer2.show_clothing()
+
+    # 显示服装库存
+    factory.show_stock()
+
+    print("\n=========== 享元模式结束 ===========")