Contents
Python – delattr()
Python delattr() builtin function deletes specified attribute/property from the given object.
In this tutorial, you will learn the syntax of any() function, and then its usage with the help of example programs.
Syntax
The syntax of delattr() function is
delattr(object, attribute)
where
Parameter | Description |
---|---|
object | An object. |
attribute | Name of the attribute that we would like to delete. |
Examples
1. Delete attribute from object
In the following program, we define a Fruit class with three attributes: name, quantity, and description. We create an object of this Fruit type, and delete the description attribute using delattr() function.
Python Program
class Fruit:
name = ''
quantity = ''
description = ''
def __init__(self, name, quantity, description):
self.name = name
self.quantity = quantity
self.description = description
def __str__(self):
details = ''
details += f'Name : {self.name}\n'
details += f'Quantity : {self.quantity}\n'
details += f'Description : {self.description}\n'
return details
apple = Fruit('Apple', '58', 'Good for health.')
# Before delete attribute
print(apple)
delattr(apple, 'description')
# After delete attribute
print(apple)
Run Code CopyOutput
Name : Apple
Quantity : 58
Description : Good for health.
Name : Apple
Quantity : 58
Description :
2. Delete attribute (which is not present) from object
If we try to delete an attribute that is not present in the object, then the interpreter raises AttributeError.
In the following program, we delete an attribute named 'someother' which is not present for the apple object. Therefore python interpreter raises AttributeError.
Python Program
class Fruit:
name = ''
quantity = ''
description = ''
def __init__(self, name, quantity, description):
self.name = name
self.quantity = quantity
self.description = description
def __str__(self):
details = ''
details += f'Name : {self.name}\n'
details += f'Quantity : {self.quantity}\n'
details += f'Description : {self.description}\n'
return details
apple = Fruit('Apple', '58', 'Good for health.')
# Before delete attribute
print(apple)
delattr(apple, 'someother')
# After delete attribute
print(apple)
Run Code CopyOutput
Name : Apple
Quantity : 58
Description : Good for health.
Traceback (most recent call last):
File "/Users/arjun/Documents/workspace/python/selenium/example1.py", line 23, in <module>
delattr(apple, 'someother')
AttributeError: someother
Related Tutorials
- Python setattr() This built-in function sets the value of an attribute of an object.
- Python getattr() This built-in function gets the value of an attribute of an object.
- Python hasattr() This built-in function checks if the object has the specified attribute.
Summary
In this tutorial of Python Examples, we learned the syntax of delattr() function, and how to delete an attribute from an object, with examples.