It is a way of creating a new class by deriving it from an existing class.
With inheritance, the new class inherits all properties and behaviors of the existing class, allowing to reuse code and create classes that build on each other
In Python, we can define a class that inherits from another class using the syntax class DerivedClass(BaseClass):
This means that the DerivedClass is inheriting from the BaseClass.
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Here is an example of how to define a class that inherits from another class:
In this example, we have a Animal class with a speak method that prints "I am an animal". We also have a Dog class that inherits from Animal and adds a bark method that prints "Woof!".
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Now, let's create an object of each class and call their methods:
As we can see, the Dog object inherited the speak method from the Animal class, and we were also able to call the bark method specific to the Dog class.
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Inheritance allows us to create more specialized classes that inherit attributes and methods from a base class. This is useful when we want to reuse code and avoid duplication.
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For example, we create a Cat class that is similar to the Dog class but has a different sound attribute and method. Instead of defining the speak method from scratch, I can inherit it from Animal class & only define the sound attribute and method specific to the Cat class
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In above example, we have a Cat class that inherits from Animal. We define a sound attribute that is specific to the Cat class and a meow method that prints the sound attribute.
Now, let's create a Cat object and call its methods:
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As we can see, the Cat object inherited the speak method from the Animal class and we were also able to call the meow method specific to the Cat class.
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Inheritance is a powerful tool in object-oriented programming that allows us to create more specialized classes based on existing ones.
By reusing code and avoiding duplication, we can create more efficient and maintainable code.
But..
It's important to use inheritance judiciously and avoid deep inheritance hierarchies that can become difficult to understand and maintain. In general, it's a good idea to limit inheritance to a few levels and favor composition over inheritance when possible.
That's it for this thread on objects and classes in #Python I hope this was helpful!
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To create a class, we use the class keyword followed by the name of the class. Here's a simple example:
In this example, we've created a class called MyClass with nothing inside it. Let's add some attributes to the class.
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Attributes are variables that belong to a class. They are defined in the __init__ method of the class. Here's an example:
In this example, we've defined a class : Person with two attributes: name and age. The __init__ method is called when a new instance of the class is created.
Loops are an essential programming concept that allow you to execute a block of code repeatedly. There are two main types of loops in Python: for loops and while loops.
F-strings in Python are a concise and powerful way to format strings. You can include any valid Python expression inside the curly braces in an f-string.
1. Use the 'timeit' module to measure the performance of your code.
This will give you a baseline to work from and help you identify areas of your code that are particularly slow.
2. Use the 'cProfile' module to profile your code and identify bottlenecks.
This will give you a detailed breakdown of where your code is spending most of its time, so you can focus your optimization efforts on the most impactful areas.