Python delattr() Function

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Python delattr() Function

Python delattr() function is used to delete an attribute from a class. It takes two parameters first is an object of the class and second is an attribute which we want to delete. After deleting the attribute, it no longer available in the class and throws an error if try to call it using the class object.

Signature

  • delattr (object, name)

Parameters

object: Object of the class which contains the attribute.

name: The name of the attribute to delete. It must be a string.

Return

It returns a complex number.

Let’s see some examples of delattr() function to understand it’s functionality.

Python delattr() Function Example 1

It is a simple example which contains a Student class, and by using delattr() function, we will delete it’s email attribute.

  • # Python delattr() function example
    class Student:
    id = 101
    name = “Rohan”
    email = “[email protected]
    def getinfo(self):
    print(self.id, self.name, self.email)
    s = Student()
    s.getinfo()
    delattr(Student,’email’) # Removing attribute
    s.getinfo() # error: no attribute ’email’ is available

Output:

  • AttributeError: ‘Student’ object has no attribute ’email’
    101 Rohan [email protected]

Python delattr() Function Example 2

It throws an error if we delete an attribute which does not exist.

  • # Python delattr() function example
    class Student:
    id = 101
    name = “Rohan”
    email = “[email protected]
    # Declaring function
    def getinfo(self):
    print(self.id, self.name, self.email)
    s = Student()
    s.getinfo()
    delattr(Student,’course’) # Removing attribute which is not available
    s.getinfo() # error: throws an error

Output:

  • AttributeError: course

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