[docs] [issue17375] Add docstrings to methods in the threading module

[Eli Bendersky]

Eli Bendersky added the comment:

Raymond - which patch is it? You didn't specify the contributor in the commit. What about the duplicate issue #12768 where someone also worked to supply a patch? 

Also, you've only committed this to 2.7; why?

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17375>
_______________________________________