[jira] [Created] (BEAM-8588) MapTuple(fn) fails if fn has type hints but no default args

["Udi Meiri (Jira)" <ji...@apache.org>]

Udi Meiri created BEAM-8588:
-------------------------------

             Summary: MapTuple(fn) fails if fn has type hints but no default args
                 Key: BEAM-8588
                 URL: https://issues.apache.org/jira/browse/BEAM-8588
             Project: Beam
          Issue Type: Bug
          Components: sdk-py-core
            Reporter: Udi Meiri
            Assignee: Udi Meiri


{code}
  def test_typed_maptuple(self):
    def fn(e1: int, e2: int) -> int:
      return e1 * e2

    result = [(1, 1), (2, 2)] | beam.MapTuple(fn)
    self.assertEqual([2, 4], sorted(result))
{code}
Fails in getcallargs_forhints_impl_py3 with:
{code}
>       raise TypeCheckError(e)
E       apache_beam.typehints.decorators.TypeCheckError: too many positional arguments
{code}



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