[issue14673] add sys.implementation

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

History with dictproxy means I'm also OK with "new type by stealth".
Perhaps add some tests to check "type(sys.implementation)()" does something
sane?

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14673>
_______________________________________