* Add ExcInfo and OptExcInfo type aliases
* Implement StartResponse using a protocol
* Mark stub-only types with an underscore
* Remove wrong TODO note
python/mypy#1178 is about variable-length tuples, while exc_info()
always returns a tuple with length 3. Ideally, exc_info() would
return Union[Tuple[Type[_E], _E, TracebackType], Tuple[None, None, None]],
but that is a different issue.
* Add __getattr__ to ModuleType.
Modules can contain anything, so give them a generic "__getattr__(name) -> Any".
This makes code like the following type-check, in pytype:
sys.modules.get("random").randint
* undo Python 3 change
* Revert "undo Python 3 change"
This reverts commit 96cf2d529e374a754f1ba681f0fc81aab25f81ef.
* Revert "Add __getattr__ to ModuleType."
This reverts commit 3ac1cf8a3b25dabfe386fbf34aef680fb1acd112.
* In stdlib/2/, make sys.modules a Dict[str, Any].
(Instead of Dict[str, ModuleType])
Same as stdlib/3/.
