#3 Inheritance in python || Types of Inheritance ||Python OOP||pythonforbeginners
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0:00 - introduction
1:25 - types of inheritance
1:38 - single inheritance
4:20 - multi level inheritance
6:45 - multiple inheritance
7:54 - Hierarchal inheritance
8:51 - Hybrid inheritance
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what is oops & class and object - • #1 OOPS in python||Class and Object in pyt...
what is __init__() method & self parameter - • #2 || Python __init__() Method and Self Pa...
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Inheritance is a fundamental concept in object-oriented programming (OOP) that allows a class (known as a child or derived class) to inherit attributes and methods from another class (known as a parent or base class). This promotes code reusability and enables the creation of hierarchical relationships between classes.
Types of inheritance in Python include:
1. **Single Inheritance**: A child class inherits from only one parent class.
2. **Multiple Inheritance**: A child class inherits from multiple parent classes.
3. **Multilevel Inheritance**: A child class inherits from a parent class, and another class inherits from this child class.
4. **Hierarchical Inheritance**: Multiple child classes inherit from a single parent class.
5. **Hybrid Inheritance**: It's a combination of two or more types of inheritance.
Each type of inheritance offers different ways to organize and structure code, depending on the relationships between classes and the requirements of the software being developed.
1. Single Inheritance
```python
class Animal:
def speak(self):
print("Animal speaks")
class Dog(Animal):
def bark(self):
print("Dog barks")
Creating an instance of the child class
dog = Dog()
dog.speak() # Output: Animal speaks
dog.bark() # Output: Dog barks
```
2. Multiple Inheritance
```python
class Bird:
def fly(self):
print("Bird flies")
class Dog:
def bark(self):
print("Dog barks")
class DogBird(Bird, Dog):
pass
Creating an instance of the child class
dog_bird = DogBird()
dog_bird.fly() # Output: Bird flies
dog_bird.bark() # Output: Dog barks
```
3. Multilevel Inheritance
```python
class Animal:
def speak(self):
print("Animal speaks")
class Dog(Animal):
def bark(self):
print("Dog barks")
class Labrador(Dog):
def color(self):
print("Labrador is brown")
Creating an instance of the child class
labrador = Labrador()
labrador.speak() # Output: Animal speaks
labrador.bark() # Output: Dog barks
labrador.color() # Output: Labrador is brown
```
4. Hierarchical Inheritance
```python
class Animal:
def speak(self):
print("Animal speaks")
class Dog(Animal):
def bark(self):
print("Dog barks")
class Cat(Animal):
def meow(self):
print("Cat meows")
Creating instances of the child classes
dog = Dog()
cat = Cat()
dog.speak() # Output: Animal speaks
dog.bark() # Output: Dog barks
cat.speak() # Output: Animal speaks
cat.meow() # Output: Cat meows
```
5. Hybrid Inheritance
```python
class A:
def method_a(self):
print("Method A")
class B:
def method_b(self):
print("Method B")
class C(A, B):
def method_c(self):
print("Method C")
class D(B, A):
def method_d(self):
print("Method D")
Creating instances of the child classes
c = C()
d = D()
c.method_a() # Output: Method A
c.method_b() # Output: Method B
c.method_c() # Output: Method C
d.method_a() # Output: Method A
d.method_b() # Output: Method B
d.method_d() # Output: Method D
```
These examples demonstrate different types of inheritance in Python and how they can be used to model relationships between classes in various scenarios.
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