Python-Inheritance.pptx

Python-Inheritance.pptx

• 1.
  PYTHON-INHERITANCE
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  What is Inheritance Inheritanceis 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.
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  Types of Inheritancein 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
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  Single Inheritance inpython 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.
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  Single Inheritance Example
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  Multiple Inheritance inPython 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.
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  Multiple Inheritance Example
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  Multilevel Inheritance inPython 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.
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  Example for MultiLevelInheritance
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  Hierarchical Inheritance Hierarchical Inheritanceis the right opposite of multiple inheritance. It means that, there are multiple derived child classes from a single parent class.
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  Example for HierarchicalInheritance
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  Hybrid Inheritance inPython 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.
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  Example for HybridInheritance
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  Advantage of Inheritancein 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.
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  Disadvantage of Inheritancein 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.