r3dm1ke

def logging_decorator(func):
  def logging_wrapper(*args, **kwargs):
    print(f'Before {func.__name__}')
    func(*args, **kwargs)
    print(f'After {func.__name__}')
  return logging_wrapper
    
@logging_decorator
def sum(x, y):
  print(x + y)

BetterProgramming

>>> def f(*, a, b):
...     print(a, b)
...
>>> f(1, 2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: f() takes 0 positional 
           arguments but 2 were given
>>> f(a=1, b=2)
1 2