Source: 📖 Effective Python item 26

Using functools.wraps for decorators

The wraps helper function form the functools built-in module is a decorator that helps you write decorators. When applied to a wrapper function, it copies all relevant metadata from the innermost function to the outermost function.

from functools import wraps

def my_decorator(func):
	@wraps(func)
	def wrapper(*args, **kwargs):
		result = func(*args, **kwargs)
		return result
	return wrapper

@my_decorator
def my_function(first, last):
	...