Python Inheritance

1) Simple Inheritance

Define a base class Animal with a method sound() that prints "Some sound". Create a subclass Dog that inherits from Animal. Instantiate Dog and call sound().

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2) Override Method

In Dog, override sound() to print "Woof!". Create object and call the method.

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3) Subclass With New Method

Create base class Person with name. Subclass Student that adds a method study() printing "Studying".

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4) Inherit Constructor

Have base class Vehicle with make and year. Subclass Car uses super() to call the base constructor.

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5) Add Subclass Attribute

Base class Employee has name. Subclass Manager adds department. Print both attributes from an object.

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6) Multilevel Inheritance

Create A → B → C (three levels). Each class has a simple method; call them from a C object.

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7) Override with Super

In subclass Car, override a method and call super().method() inside it.

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8) Inherit Without New Methods

Create class Shape; subclass Circle that just inherits without adding anything.

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9) Check isinstance

Create object of Student and check:

isinstance(obj, Person)

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10) Use issubclass

Check whether Student is a subclass of Person.

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11) Multiple Subclasses

Base class Fruit; subclasses Apple, Banana, each with unique method.

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12) Base Method Called from Subclass

Have base class method describe() that prints something; call it from subclass object.

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13) Override Init

Subclass overrides __init__ and still uses super() to call the base __init__.

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14) Extend Behavior

Base class method show() prints basic info. Subclass overrides it to show more fields.

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15) Shared Method Across Classes

Classes Bird and Fish inherit common base Animal with move() method.

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16) Class with Default Values

Base class has defaults; subclass uses defaults if no args are passed.

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17) Dynamic Attributes in Subclass

Subclass adds attributes based on user input.

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18) Inherit and Use List

Base class has a list attribute; subclass manipulates it.

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19) Inherit and Validate

Subclass adds method that checks some condition (e.g., age ≥ 18) inherited from base.

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20) Abstract-like Inheritance (Basic)

Create base class Base with a method that raises NotImplementedError. Subclass overrides it.

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💡 Concepts Reinforced

Concept	What You Practice
Basic inheritance	Simple subclassing
Method overriding	Subclass custom behavior
super() use	Calling parent class constructor/method
Multilevel inheritance	Chain of classes
Type checking	isinstance, issubclass
Base class method reuse	Shared behavior

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🧠 Example Starter

Base class & Subclass

class Animal:
    def sound(self):
        print("Some sound")

class Dog(Animal):
    def sound(self):
        print("Woof!")

d = Dog()
d.sound()   # Output: Woof!

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canvil: 333f6c7d-6876-4f7e-b6ad-1bdb2233f5c1