aboderinsamuel commented on code in PR #50203:
URL: https://github.com/apache/arrow/pull/50203#discussion_r3467899593
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python/pyarrow/src/arrow/python/python_to_arrow.cc:
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@@ -908,13 +908,32 @@ class PyListConverter : public ListConverter<T,
PyConverter, PyConverterTrait> {
Status AppendNdarray(PyObject* value) {
PyArrayObject* ndarray = reinterpret_cast<PyArrayObject*>(value);
- if (PyArray_NDIM(ndarray) != 1) {
- return Status::Invalid("Can only convert 1-dimensional array values");
- }
if (PyArray_ISBYTESWAPPED(ndarray)) {
// TODO
return Status::NotImplemented("Byte-swapped arrays not supported");
}
+ OwnedRef flattened;
+ if (PyArray_NDIM(ndarray) != 1) {
+ // GH-49644: a fixed-size list (e.g. fixed-shape-tensor storage) can be
+ // built from a multi-dimensional array, always flattened in C order
+ // regardless of the input's memory layout.
Review Comment:
Done, replaced it with a short note about the 0-D / variable-sized-list case.
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