def verbose(func):
    def wrapper(*args, **kwargs):
        print(f"Arguments were: {args}, {kwargs}")
        return func(*args, **kwargs)
    return wrapper

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

print(add(3, 4))

'''
How it works:
# The decorator 'verbose' prints the arguments passed to the function 'add' before executing it.        
# The function 'add' then returns the sum of the two arguments. The decorator is applied using the '@' syntax.

'''

def layer1(func):
	def wrapper(*args, **kwargs):
		print("layer 1")
		func(*args, **kwargs)
		print("layer 1")
	return wrapper

def layer2(func):
	def wrapper(*args, **kwargs):
		print("layer 2")
		func(*args, **kwargs)
		print("layer 2")
	return wrapper

def layer3(func):
	def wrapper(*args, **kwargs):
		print("layer 3")
		func(*args, **kwargs)
		print("layer 3")
	return wrapper

@layer1
@layer2
@layer3
def print_hi(message):
	print(message)

print_hi("Hi there!")