Python is a super-popular programming language particularly suited for developing GUIs and web applications. It is also an extremely popular choice for application development because it offers dynamic typing and binding options. In this article, we will be learning about objects and classes in Python.
What is a Class?
The class can be defined as a collection of objects that define the common attributes and behaviors of all the objects. To sum up, it can be called a blueprint of similar objects.
For better understanding, let’s go through an example. In this case, we are considering a Person as a class. Now, if a person is a class, every person has certain features, such as name, gender, and age. Every person has certain behaviors, they can talk, walk, run, or vote.
Class is defined under a “class” keyword.
Example:
Fig: Defining a class-objects and classes in Python
What is an Object?
Just like everything in the real world is an object, so is the case with the OOPS programming paradigm.
The object is an entity that has state and behavior. It is an instance of a class that can access the data.
Example:
Fig: Defining an object
The _init_Method
The _init_ method is run as soon as an object of a class is created. This method is useful for passing initial value to your objects.
Fig: _init_ method
“Self” represents the instance of the class. It binds the attributes to the given arguments.
Creating Classes and Objects in Python
Fig: Creating class and objects
Here, emp1 and emp2 are objects of the class employee.
Modifying Object Properties
You can modify object properties in the following manner:
Fig: Modify object properties-objects and classes in Python
In the example above, we mentioned the attribute that we wanted to change by specifying the object and its properties.
Delete Object Properties
You can delete the object property by using the ‘del’ keyword.
Fig: Deleting object properties
As you can see, the attribute has been deleted, and you get an error message when you try to print the ‘age’ attribute.
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Conclusion
In this article, we took a look at the Objects and Classes in Python through some visual examples.
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