[docs] [issue17566] Document that importlib.abc.Loader.module_repr is abstract and thus needed by various other ABCs

[Brett Cannon]

Brett Cannon added the comment:

If Eric doesn't have anything to add then I would like to change importlib.abc.Loader.module_repr() to no longer be abstract and the default to be defined as ``return repr(module)``. Else it should be entirely optional and not have a default implementation, but having it be required as abstract doesn't seem quite right to me.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17566>
_______________________________________