Inheritance in Python

Author: Deepali-Srivastava

lectures-code/inheritance-1.py

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+# Copyright (C) Deepali Srivastava - All Rights Reserved
+# This code is part of Python course available on CourseGalaxy.com
+
+class Person:
+    def __init__(self, name, age, address, phone):
+        self.name = name
+        self.age = age
+        self.address = address
+        self.phone = phone
+
+    def greet(self):
+        print('Hello I am', self.name)
+
+    def is_adult(self):
+        if self.age > 18:
+            return True
+        else:
+            return False
+        
+    def contact_details(self):
+        print(self.address, self.phone)
+
+
+class Employee(Person):
+   pass
+
+ 
+emp = Employee('Jack', 30, 'D4, XYZ Street, Delhi', '994477291')
+
+print(emp.name)
+print(emp.age)
+print(emp.address)
+print(emp.phone)
+
+print(emp.greet())
+print(emp.is_adult())
+print(emp.contact_details())
+
+print(isinstance(emp,Employee))  
+print(isinstance(emp, Person))  
+
+print(issubclass(Employee, Person))
+print(issubclass(Person, object))
+print(issubclass(str, object))
+print(issubclass(int, object))

lectures-code/inheritance-2.py

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+# Copyright (C) Deepali Srivastava - All Rights Reserved
+# This code is part of Python course available on CourseGalaxy.com
+
+class Person: 
+    def __init__(self, name, age, address, phone):
+        self.name = name
+        self.age = age
+        self.address = address
+        self.phone = phone
+
+    def greet(self):
+        print('Hello I am', self.name)
+
+    def is_adult(self):
+        if self.age > 18:
+            return True
+        else:
+            return False
+        
+    def contact_details(self):
+        print(self.address, self.phone)
+
+
+class Employee(Person):
+    def __init__(self, name, age, address, phone, salary, office_address, office_phone):
+        super().__init__(name, age, address, phone)
+        self.salary = salary
+        self.office_address = office_address
+        self.office_phone = office_phone
+
+    def calculate_tax(self):
+        if self.salary < 5000:
+            return 0
+        else:
+            return self.salary * 0.05
+
+    def contact_details(self):
+        super().contact_details()
+        print(self.office_address, self.office_phone)
+
+emp = Employee('Jack', 30, 'D4, XYZ Street', '994477291', 8000, 'ABC Street', '384923993')
+emp.contact_details()