[Python-Dev] Deleting with setting C API functions

[Serhiy Storchaka]

On 02.12.15 12:06, Victor Stinner wrote:
> 2015-12-02 9:42 GMT+01:00 Serhiy Storchaka <storchaka at gmail.com>:
>> You have enough time to update your projects, and you can update them
>> uniformly for all versions. And may be you will found few weird bugs related
>> to misuse of Set* API.
>
> Did you check popular projects using C extensions to check if they
> call Set*() functions to delete attributes/items?

I have checked following projects.

regex, simplejson, Pillow, PyQt4, LibreOffice, PyGTK, PyICU, pyOpenSSL, 
libxml2, Boost, psutil, mercurial don't use PyObject_SetAttr at all.

NumPy, pgobject don't use PyObject_SetAttr for deleting.

PyYAML and lxml use PyObject_SetAttr only in code generated by Cython 
and never use it for deleting.