保存函数的元数据

装饰器

from functools import wraps

def decorate1(func):
    "This is decorate1"
    @wraps(func)
    def wrapper(*args, **kwargs):
        "This is wrapper func"
        print('decorate1')
        return func(*args, **kwargs)
    return wrapper

def decorate2(func):
    "This is decorate2"
    @wraps(func)
    def wrapper(*args, **kwargs):
        print('decorate2')
        return func(*args, **kwargs)
    return wrapper

@decorate2
@decorate1
def test():
    "This is a test"
    pass

test()
print(test.__name__)
print(test.__doc__)