hasattr() to check if object attribute exist or not in Python

hasattr(object, name) Returns Boolean ( True or False ) after checking attribute of the input object

`object`	Object for which the attribute is to be checked .
`name`	name of the the attribute .

Read more on Class Object and Attributes
Output of hasattr() is True or False.

class Animal():

     #class attributes
    species='carnivores'

     #instance attributes
    def __init__(self1,name1,age):
        self1.name= name1
        self1.age=age
        

 #instantiate the Animal  class
tiger=Animal("Ronald",5) 
print(hasattr(tiger,'age'))    # True 
print(hasattr(tiger,'height')) # False

In above code we got True for the attribute age , but got False for attribute height as it is not declared.

Benefits of Using hasattr()

Safe Attribute Access: It allows for safe attribute access by checking for an attribute's existence before accessing it, thus avoiding potential AttributeErrors.
Dynamic Code: Useful in scenarios where we need to work with objects dynamically, and we might not know if an object has a specific attribute.
Conditional Logic: Enables writing conditional logic based on the presence or absence of attributes in objects, making our code more flexible and robust.

In summary, hasattr() is a handy function in Python for checking the existence of an attribute in an object, providing a way to write safer and more adaptable code.
All Built in Functions in Python setattr() delattr() getattr()

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Subhendu Mohapatra

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hasattr(): determine whether an object has a specific attribute

Benefits of Using hasattr()

Subhendu Mohapatra