[Bug]: Python type statement unsupported

[pineapple-pokopo]

What happened?

Python 3.12 introduced the type statement to define type aliases.

Using the type statement with apache-beam 2.60.0 generates an error however:

TypeError: Type hints for a PTransform must be a non-sequence, a type, or a TypeConstraint. InputType is an instance of TypeAliasType.

Reproducible example:

import apache_beam as beam

type InputType = tuple[int, ...]


def print_element(element: InputType) -> InputType:
    print(element)

    return element


with beam.Pipeline() as pipeline:
    _ = pipeline | beam.Create([(1, 2)]).with_output_types(InputType) | beam.Map(print_element)

Using InputType: TypeAlias = tuple[int, ...] instead works fine.

Issue Priority

Priority: 2 (default / most bugs should be filed as P2)

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[github-actions]

This issue has been marked as stale due to 150 days of inactivity. It will be closed in 30 days if no further activity occurs. If you think that’s incorrect or this issue still needs to be addressed, please simply write any comment. If closed, you can reopen the issue at any time. Thank you for your contributions.

[pineapple-pokopo]

Still an issue with apache-beam v2.65.0.

[github-actions]

This issue has been marked as stale due to 150 days of inactivity. It will be closed in 30 days if no further activity occurs. If you think that’s incorrect or this issue still needs to be addressed, please simply write any comment. If closed, you can reopen the issue at any time. Thank you for your contributions.

[pineapple-pokopo]

Still an issue with apache-beam v2.69.0.