def evening_greeting(func):
def function_wrapper(x):
print("Good evening, " + func.__name__ + " returns:")
func(x)
return function_wrapper
def morning_greeting(func):
def function_wrapper(x):
print("Good morning, " + func.__name__ + " returns:")
func(x)
return function_wrapper
@evening_greeting
def foo(x):
print(42)
foo("Hi")
These two decorators are nearly the same, except for the greeting. We want to add a parameter to the decorator to be capable of customizing the greeting, when we do the decoration.