[Python-ideas] Fix that broken callable builtin

Guido van Rossum guido at python.org
Sat Apr 18 00:19:41 CEST 2015


So propose a patch for callable() along these lines. It'll have to be C
code.

On Fri, Apr 17, 2015 at 2:21 PM, Ionel Cristian Mărieș <contact at ionelmc.ro>
wrote:

> Yes indeed, that's one way but I wouldn't want to monkeypatch the
> `callable` builtin. People wouldn't expect that library would even dare
> monkeypatch builtin.
>
>
> Thanks,
> -- Ionel Cristian Mărieș, http://blog.ionelmc.ro
>
> On Sat, Apr 18, 2015 at 12:10 AM, Ethan Furman <ethan at stoneleaf.us> wrote:
>
>> On 04/18, Ionel Cristian Mărieș wrote:
>>
>> > Also there's the issue about not being able to implement a true proxy
>> (as
>> > outlined before).
>>
>> Proxies are a bit of a pain.  But you can create your own callable
>> function.
>>
>> Something like (untested):
>>
>> def callable(obj):
>>     try:
>>         func = obj.__call__
>>         return True
>>     except AttributeError:
>>         return False
>>
>> --
>> ~Ethan~
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>
>
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-- 
--Guido van Rossum (python.org/~guido)
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