子类circle

2026-10-07 22:11:31 +08:00
parent a60d87f635
commit 06da619342
1 changed files with 4 additions and 1 deletions
@@ -3,4 +3,7 @@ class Shape:
        return 0
 class Circle(Shape):
    def __init__(self, radius):
-        self.radius = radius
+        self.radius = radius
+
+    def area(self):
+        return math.pi * self.radius * self.radius