Python built-in Method - hasattr()-IGI

ht‮pt‬s://www.theitroad.com

The hasattr() method in Python is a built-in function that returns a Boolean value indicating whether an object has a given attribute or not.

The syntax for hasattr() is as follows:

hasattr(object, name)

Here, object is the object to be checked for the attribute, and name is the name of the attribute.

For example:

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

person = Person("John", 30)

has_name = hasattr(person, "name")
print(has_name)  # Output: True

has_salary = hasattr(person, "salary")
print(has_salary)  # Output: False

In the example above, we define a Person class with two attributes name and age. We create an instance of the class called person. We use hasattr() to check if person has a name attribute, which it does. We then print the Boolean value True.

We also use hasattr() to check if person has a salary attribute, which it does not. We then print the Boolean value False.

hasattr() is useful when you want to check if an object has a particular attribute before trying to access it. This can be especially useful when working with objects whose attributes are not known ahead of time or are generated at runtime.

tutorial

Python built-in Method - hasattr()