Return PyValueError for nullable PyArrow struct imports#10174
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alamb merged 2 commits intoJun 23, 2026
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Jefffrey
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Jun 23, 2026
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should be good once merge conflict is resolved
…nullable-struct-error # Conflicts: # arrow-pyarrow-testing/tests/pyarrow.rs
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I took the liberty of merging up from main |
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Thanks again @fallintoplace and @Jefffrey |
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What changed
RecordBatch::from_pyarrow_boundnow returns aPyValueErrorwhen a PyArrow C array capsule contains a nullable top-levelStructArray, instead of panicking via an internal assertion.A regression test covers importing a nullable PyArrow struct array through the capsule path.
Why
This conversion handles external Python input, so unsupported nullable struct arrays should surface as Python exceptions rather than aborting through a Rust panic.
Validation
cargo fmt --package arrow-pyarrowcargo fmt --manifest-path arrow-pyarrow-testing/Cargo.tomlcargo test --manifest-path arrow-pyarrow-testing/Cargo.toml test_from_pyarrow_nullable_struct_array