An example about how to build a decorator

decorator_example

import functools
def decorator(func_to_decorate):
	"""
	@wraps
	(func) updates .__name__ and .__doc__ so that code completion 
	works in editors and you can pull up documentation.
	"""
	@functools.wraps(func_to_decorate)
	def wrapper(*args, **kwargs):
		# Do something
		result = func_to_decorate(*args, **kwargs)
		# Do something
		return result
	return wrapper