[capi-sig] Does Py_False or Py_True need de-referencing if used in a PyObject_Compare?

[Campbell Barton]

It depends, sometimes you wont want to allow this for attribute
assignment since it can be misleading.
eg:

  foo.bar = []

On Tue, Dec 18, 2012 at 3:45 AM, Gustavo Carneiro <gjcarneiro at gmail.com> wrote:
> You are not wrong.  On the other hand, I often depend on the fact that an
> empty list or dictionary is false, and true if not empty.  It is quite
> convenient, and I find it reasonably logical.
>
> On Mon, Dec 17, 2012 at 1:59 PM, Campbell Barton <ideasman42 at gmail.com>
> wrote:
>>
>> Take care using PyObject_IsTrue since it will accept many PyObject's
>> (floats, lists, dicts etc), if you want to be strict with checking
>> your input its not always so good.
>> Instead you can use PyLong_AsLong() this works for True/False and any int
>> type.
>>
>> eg:
>>         int param = PyLong_AsLong(value);
>>         if (param == -1 && PyErr_Occurred()) {
>>           .... error out ...
>>         }
>>         ... check the int now ...
>>
>> On Mon, Dec 17, 2012 at 10:23 PM, Gustavo Carneiro <gjcarneiro at gmail.com>
>> wrote:
>> > PyObject_IsTrue(
>>
>>
>>
>> --
>> - Campbell
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>
>
>
>
> --
> Gustavo J. A. M. Carneiro
> "The universe is always one step beyond logic." -- Frank Herbert



-- 
- Campbell