[Python-Dev] Why does Signature.from_function() have to check the type of its argument?

[Ethan Furman]

On 02/10/2013 01:46 PM, PJ Eby wrote:
> How about you return FunctionType as your __class__ attribute?  ;-)
>
> Your type() will still be different, but isinstance() also considers
> the __class__ if it's different from the type().  (At least it does in
> 2.x, I've not tried it in any 3.x versions yet...)

Python 3.2.3 (default, Oct 19 2012, 19:53:16)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
--> class Test():
...   pass
...
--> t = Test()
--> t.__class__
<class '__main__.Test'>
--> import types
--> class Test():
...   __class__ = types.FunctionType
...
--> t = Test()
--> t.__class__
<class 'function'>
--> isinstance(t, types.FunctionType)
True

--
~Ethan~