如何从Python中的函数中剥离装饰器

def with_connection(f):
    def decorated(*args, **kwargs):
        f(get_connection(...), *args, **kwargs)
    return decorated

@with_connection
def spam(connection):
    # Do something

我想测试垃圾邮件功能,而不必经历设置连接的麻烦(或者装饰者正在做的任何事情).

鉴于垃圾邮件,如何从中删除装饰器并获得底层的“未修饰”功能？

@with_connection
def spam(connection):
    # Do something

相当于

def spam(connection):
    # Do something

spam = with_connection(spam)

这意味着“原始”垃圾邮件可能甚至不再存在.一个(不太漂亮)黑客将是这样的：

def with_connection(f):
    def decorated(*args, **kwargs):
        f(get_connection(...), *args, **kwargs)
    decorated._original = f
    return decorated

@with_connection
def spam(connection):
    # Do something

spam._original(testcon) # calls the undecorated function