danepitkin commented on code in PR #39813:
URL: https://github.com/apache/arrow/pull/39813#discussion_r1474823872
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python/pyarrow/array.pxi:
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@@ -2460,6 +2460,403 @@ cdef class LargeListArray(BaseListArray):
return pyarrow_wrap_array((<CLargeListArray*> self.ap).offsets())
+cdef class ListViewArray(Array):
+ """
+ Concrete class for Arrow arrays of a list view data type.
+ """
+
+ @staticmethod
+ def from_arrays(offsets, sizes, values, DataType type=None, MemoryPool
pool=None, mask=None):
+ """
+ Construct ListViewArray from arrays of int32 offsets, sizes, and
values.
+
+ Parameters
+ ----------
+ offsets : Array (int32 type)
+ sizes : Array (int32 type)
+ values : Array (any type)
+ type : DataType, optional
+ If not specified, a default ListType with the values' type is
+ used.
+ pool : MemoryPool, optional
+ mask : Array (boolean type), optional
+ Indicate which values are null (True) or not null (False).
+
+ Returns
+ -------
+ list_view_array : ListViewArray
+
+ Examples
+ --------
+ >>> import pyarrow as pa
+ >>> values = pa.array([1, 2, 3, 4])
+ >>> offsets = pa.array([0, 1, 2])
+ >>> sizes = pa.array([2, 2, 2])
+ >>> pa.ListViewArray.from_arrays(offsets, sizes, values)
+ <pyarrow.lib.ListViewArray object at ...>
+ [
+ [
+ 1,
+ 2
+ ],
+ [
+ 2,
+ 3
+ ],
+ [
+ 3,
+ 4
+ ]
+ ]
+ >>> # nulls in the offsets array become null lists
+ >>> offsets = pa.array([0, None, 2])
Review Comment:
I will update this to use a null mask instead of `None`
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