hasattr()

OOP

Returns True if the object has the given attribute.

Signature

hasattr(object, name)

Returns

bool

Example

class Dog:
    name = 'Rex'
d = Dog()
print(hasattr(d, 'name'))   # True
print(hasattr(d, 'breed'))  # False

About hasattr()

hasattr is a Python oop function with the signature hasattr(object, name). Returns True if the object has the given attribute. It returns a value of type bool.

Python provides a rich set of built-in functions and standard library modules that cover common programming tasks. Understanding these functions helps you write more idiomatic, efficient Python code. The hasattrfunction is commonly used in data processing, web development, scripting, and automation tasks.

When working with hasattr(), consider edge cases like empty inputs, None values, and type mismatches. Python's duck typing means many built-in functions work with any object that implements the required protocol (e.g., __len__ for len(), __iter__ for iteration). This flexibility is a key strength of Python's design philosophy.

Related Functions

getattr()setattr()delattr()dir()