self.assertIn('SupportsBytes', a)

self.assertIn('SupportsComplex', a)

def test_all_exported_names(self):

import typing

actual_all = set(typing.__all__)

computed_all = {

k for k, v in vars(typing).items()

# explicitly exported, not a thing with __module__

if k in actual_all or (

# avoid private names

not k.startswith('_') and

# avoid things in the io / re typing submodules

k not in typing.io.__all__ and

k not in typing.re.__all__ and

k not in {'io', 're'} and

# there's a few types and metaclasses that aren't exported

not k.endswith(('Meta', '_contra', '_co')) and

not k.upper() == k and

# but export all things that have __module__ == 'typing'

getattr(v, '__module__', None) == typing.__name__

)

}

self.assertSetEqual(computed_all, actual_all)

if __name__ == '__main__':

main()