Python-Inheritance.pptx
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Inheritance in Python allows new classes to inherit features and attributes from existing classes, promoting code reusability and modular design. There are several types of inheritance, including single, multiple, multilevel, hierarchical, and hybrid inheritance, each with distinct characteristics. While inheritance offers advantages like modularity and reduced maintenance costs, it may also lead to decreased execution speed and tightly coupled class dependencies.
Python-Inheritance.pptx
- 2. What is Inheritance Inheritance is the ability to ‘inherit’ features or attributes from already written classes into newer classes we make. These features and attributes are defined data structures and the functions we can perform with them, a.k.a. Methods. It promotes code reusability, which is considered one of the best industrial coding practices as it makes the codebase modular. In python inheritance, new class/es inherits from older class/es. The new class/es copies all the older class's functions and attributes without rewriting the syntax in the new class/es. These new classes are called derived classes, and old ones are called base classes.
- 3. Types of Inheritance in Python 1. Single Inheritance 2. Multiple Inheritance 3. Multi Level Inheritance 4. Hierarchical Inheritance in Python 5. Hybrid Inheritance in Python Parent1 -> Child1 : Single Inheritance Parent1 -> Child1 -> Child2 : Multi – Level Inheritance Parent1 -> Child2 <- Parent2 : Multiple Inheritance
- 4. Single Inheritance in python Single Inheritance is the simplest form of inheritance where a single child class is derived from a single parent class. Due to its candid nature, it is also known as Simple Inheritance.
- 6. Multiple Inheritance in Python In multiple inheritance, a single child class is inherited from two or more parent classes. It means the child class has access to all the parent classes' methods and attributes.
- 8. Multilevel Inheritance in Python In multilevel inheritance, we go beyond just a parent-child relation. We introduce grandchildren, great-grandchildren, grandparents, etc. We have seen only two levels of inheritance with a superior parent class/es and a derived class/es, but here we can have multiple levels where the parent class/es itself is derived from another class/es.
- 9. Example for MultiLevel Inheritance
- 10. Hierarchical Inheritance Hierarchical Inheritance is the right opposite of multiple inheritance. It means that, there are multiple derived child classes from a single parent class.
- 11. Example for Hierarchical Inheritance
- 12. Hybrid Inheritance in Python Hybrid Inheritance is the mixture of two or more different types of inheritance. Here we can have many relationships between parent and child classes with multiple levels.
- 13. Example for Hybrid Inheritance
- 14. Advantage of Inheritance in Python Modular Codebase: Increases modularity, i.e., breaking down codebase into modules, making it easier to understand. Here, each class we define becomes a separate module that can be inherited separately by one or many classes. Code Reusability: the child class copies all the attributes and methods of the parent class into its class and use. It saves time and coding effort by not rewriting them, thus following modularity paradigms. Less Development and Maintenance Costs: changes need to be made in the base class; all derived classes will automatically follow.
- 15. Disadvantage of Inheritance in Python Decreases the Execution Speed: loading multiple classes because they are interdependent Tightly Coupled Classes: this means that even though parent classes can be executed independently, child classes cannot be executed without defining their parent classes.