main.py

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)
  
sum(2, 5)
> Before sum
> 7
> After sum