Decorators in Python

Decorators in Python — a practical guide to Python decorators with clear examples you can reuse in real projects.

Python Tutorial Series (54/95). Prefer one article? Read the complete Python tutorial.

Short description

A decorator takes a function and returns a new function. Use `@decorator` syntactic sugar.

Simple decorator

def log(fn):
    def wrapper(*args, **kwargs):
        print('calling', fn.__name__)
        return fn(*args, **kwargs)
    return wrapper

@log
def add(a, b):
    return a + b

print(add(2, 3))