Prevent self being passed to a function stored as a member variable?

Qiangning Hong hongqn at gmail.com
Mon Sep 4 18:52:00 CEST 2006


On 4 Sep 2006 09:39:32 -0700, Sandra-24 <sandravandale at yahoo.com> wrote:
> How can you prevent self from being passed to a function stored as a
> member variable?
>
> class Foo(object):
>    def __init__(self, callback):
>       self.func = callback
>
> f =Foo(lambda x: x)
> f.func(1) # TypeError, func expects 1 argument, recieved 2

Do you really get that error? I got the following in my python shell:

.>>> class Foo(object):
....   def __init__(self, callback):
....     self.func = callback
....
.>>> f = Foo(lambda x: x)
.>>> f.func(1)
1



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