Udi Meiri created BEAM-10323:
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Summary: Python type hints: make WindowedValue, TimestampValue
Generic
Key: BEAM-10323
URL: https://issues.apache.org/jira/browse/BEAM-10323
Project: Beam
Issue Type: Bug
Components: sdk-py-core
Reporter: Udi Meiri
The above classes are used as return value wrappers, thus when converting
return value annotations to type hints, the argument of these should be used as
the hint.
Example (this should pass but doesn't currently):
{code}
def test_timestamped_value(self):
def timestamped(e: int) -> beam.window.TimestampedValue[int]:
return beam.window.TimestampedValue(e, 0)
with TestPipeline() as p:
pcoll = p | beam.Create([1, 2, 3]) | beam.Map(timestamped)
self.assertEqual(int, pcoll.element_type)
{code}
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