Currently, the NewType('MyEnumValue', int) only exists within mypy stubs, but not in the original python code generated by protoc.

This results in ugly callsites like

from proto.mylib import MyEnum

MYPY = False
if MYPY:
    from proto.mylib. import MyEnumValue

If we can upstream to protoc a simple line

MyEnumValue = int

Then, the callsites can use mypy-protobuf more smoothly by doing

from proto.mylib import MyEnum, MyEnumValue