How to update and delete object properties and object in python

You can delete objects and properties of object by using the del keyword.

class Employee:
    def __init__(self, salary, name):
        self.salary = salary
        self.name = name
 
 
emp1 = Employee(10000, "John Doe")
 
del emp1.salary     # Delete object property
del emp1            # Delete object
 

2019-06-23T12:50:33+05:30 2019-06-23T12:50:33+05:30 Amit Arora Amit Arora Python Programming Tutorial Python Practical Solution

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:

How to update and delete object properties and object in python

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. 

If you have any questions, please mention them in the comments section, and we'll have our experts answer them for you as soon as possible!

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How do you modify and delete an object property in Python?

Python Delete Property To create a property of a class, you use the @property decorator. Underhood, the @property decorator uses the property class that has three methods: setter, getter, and deleter. By using the deleter, you can delete a property from an object.

How do you remove an object in Python?

The del keyword in python is primarily used to delete objects in Python. Since everything in python represents an object in one way or another, The del keyword can also be used to delete a list, slice a list, delete a dictionaries, remove key-value pairs from a dictionary, delete variables, etc.

How do you remove a property of an object?

Remove Property from an Object The delete operator deletes both the value of the property and the property itself. After deletion, the property cannot be used before it is added back again. The delete operator is designed to be used on object properties. It has no effect on variables or functions.

How do you delete an object and class attribute?

The delattr() method is used to delete the named attribute from the object, with the prior permission of the object. Syntax: delattr(object, name) The function takes only two parameter: object : from which the name attribute is to be removed. name : of the attribute which is to be removed.