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GH-50847: [Python] Add Type_RUN_END_ENCODED to _NESTED_TYPES set #50848

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GH-50847: [Python] Add Type_RUN_END_ENCODED to _NESTED_TYPES set #50848

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3 changes: 3 additions & 0 deletions python/pyarrow/tests/test_types.py
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Original file line number Diff line number Diff line change
Expand Up @@ -244,7 +244,10 @@ def test_is_nested_or_struct():
assert types.is_nested(pa.large_list(pa.int32()))
assert types.is_nested(pa.list_view(pa.int32()))
assert types.is_nested(pa.large_list_view(pa.int32()))
assert types.is_nested(pa.map_(pa.string(), pa.int32()))
assert types.is_nested(pa.run_end_encoded(pa.int32(), pa.string()))
assert not types.is_nested(pa.int32())
assert not types.is_nested(pa.dictionary(pa.int32(), pa.string()))


def test_is_union():
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3 changes: 2 additions & 1 deletion python/pyarrow/types.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,8 @@
_UNION_TYPES = {lib.Type_SPARSE_UNION, lib.Type_DENSE_UNION}
_NESTED_TYPES = {lib.Type_LIST, lib.Type_FIXED_SIZE_LIST, lib.Type_LARGE_LIST,
lib.Type_LIST_VIEW, lib.Type_LARGE_LIST_VIEW,
lib.Type_STRUCT, lib.Type_MAP} | _UNION_TYPES
lib.Type_STRUCT, lib.Type_MAP,
lib.Type_RUN_END_ENCODED} | _UNION_TYPES


class TypesEnum(IntEnum):
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