完成主程序部分

main.py

@@ -2,12 +2,22 @@ class Shape:
     def area(self):
         return 0
 class Circle(Shape):
-    def __init__(self,r):
+    def __init__(self,name,r):
+        self.name = name
         self.r = r
     def area(self):
         return (3.14*self.r*self.r)
 class Square(Shape):
-    def __init__(self,side):
+    def __init__(self,name,side):
+        self.name = name
         self.side = side
     def area(self):
         return (self.side*self.side)
+
+shape_list = []
+circle_1 = Circle("circle_1",1)
+square_1 = Square("square_1",1)
+shape_list.append(circle_1)
+shape_list.append(square_1)
+for shape in shape_list:
+    print(f"{shape.name}的面积:{shape.area()}")