jorisvandenbossche commented on a change in pull request #7691:
URL: https://github.com/apache/arrow/pull/7691#discussion_r452446416
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File path: python/pyarrow/includes/libarrow_dataset.pxd
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@@ -314,6 +314,10 @@ cdef extern from "arrow/dataset/api.h" namespace
"arrow::dataset" nogil:
const CExpression& partition_expression,
CRecordBatchProjector* projector)
+ cdef CResult[unordered_map[c_string, shared_ptr[CScalar]]] \
+ CGetPartitionKeys "arrow::dataset::KeyValuePartitioning::GetKeys"(
Review comment:
One question for my education: `GetKeys` is a method on the
`KeyValuePartitioning` class, but since that method doesn't use any of the
initialized variabled of the object, you can just use it as a free function
like this independent from a KeyValuePartitioning object in C++? (like a
static/class method in Python, but then without needing to mark it as such)
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