Update 03_Duck_Typing.MD

Author: Vishal-sys-code

Lecture_17/03_Duck_Typing.MD

@@ -4,4 +4,35 @@ It is the concept where the class of an object is less important than the method
 "If it walks like a duck and it quacks like a duck then it must be a duck".
 
 ```py
+class Duck:
+    def walk(self):
+        print("Duck is walking")
+    def talk(self):
+        print("Duck is quackng")
+class Person:
+    def catch(self, Duck):
+        Duck.walk()
+        Duck.talk()
+        print("You catch me")
+class Chicken:
+    def walk(self):
+        print("The chicken is walking")
+    def talk(self):
+        print("The chicken is talking")
+
+duck = Duck()
+chicken = Chicken()
+person = Person()
+person.catch(duck)
+person.catch(chicken)
+
+"""
+Output:
+Duck is walking
+Duck is quackng
+You catch me
+The chicken is walking
+The chicken is talking
+You catch me
+"""
 ```