Create Polymorphism

OOP/Polymorphism

@@ -0,0 +1,44 @@
+from math import pi
+
+
+class Shape:
+    def __init__(self, name):
+        self.name = name
+
+    def area(self):
+        pass
+
+    def fact(self):
+        return "I am a two-dimensional shape."
+
+    def __str__(self):
+        return self.name
+
+
+class Square(Shape):
+    def __init__(self, length):
+        super().__init__("Square")
+        self.length = length
+
+    def area(self):
+        return self.length**2
+
+    def fact(self):
+        return "Squares have each angle equal to 90 degrees."
+
+
+class Circle(Shape):
+    def __init__(self, radius):
+        super().__init__("Circle")
+        self.radius = radius
+
+    def area(self):
+        return pi*self.radius**2
+
+
+a = Square(4)
+b = Circle(7)
+print(b)
+print(b.fact())
+print(a.fact())
+print(b.area())