multiple_decorators.py

def duplicate(function):
	def wrapper(*args,**kwargs):
			return 2*function(*args,**kwargs)
	return wrapper


def formatting(lowerscase = False):
	def formatting_real(function):
		def wrapper(*args, **kwargs):
			if lowerscase:
				return function(*args,**kwargs).lower()
			else:
				return function(*args,**kwargs).upper()
		return wrapper
	return formatting_real


@duplicate
@formatting(lowerscase = False)
def hello_world(msg = None):
	return msg


print hello_world("Hi there!!")