[issue8743] set() operators don't work with collections.Set instances

[Raymond Hettinger]

Raymond Hettinger <rhettinger at users.sourceforge.net> added the comment:

No need to rush this for the beta.  It's a bug fix and can go in at any time.  The important thing is that we don't break the C code.  The __ror__ magic method would still need to do the right thing and the C code needs to defend against the interpreter swapping self and other.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8743>
_______________________________________