[Python-Dev] boxing and unboxing data types

[Serhiy Storchaka]

On 09.03.15 08:12, Ethan Furman wrote:
> On 03/08/2015 11:07 PM, Serhiy Storchaka wrote:
>
>> If you don't call isinstance(x, int) (PyLong_Check* in C).
>>
>> Most conversions from Python to C implicitly call __index__ or __int__, but unfortunately not all.
>
> [snip examples]
>
> Thanks, Serhiy, that's what I was looking for.

May be most if not all of these examples can be considered as bugs and 
slowly fixed, but we can't control third-party code.