Identity and Access Management - python decorators (代码）

from functools import wraps 

def add_greeting(f):
    @wraps(f)
    def wrapper(*args, **kwargs):
        print("Hello!")
        return f(*args, **kwargs)
    return wrapper

@add_greeting
def print_name(name):
    print(name)

print_name('sandy')

结果如下：

Hello!
sandy

from functools import wraps 

def add_greeting(greeting=''):
    def add_greeting_decorator(f):
        @wraps(f)
        def wrapper(*args, **kwargs):
            print(greeting)
            return f(*args, **kwargs)
        return wrapper
    return add_greeting_decorator

@add_greeting("what's up!")
def print_name(name):
    print(name)


print_name("kathy")

结果如下：

what's up!
kathy