Re: [PR] GH-33500: [Python] add `Table.to/from_struct_array` [arrow]

["judahrand (via GitHub)" <gi...@apache.org>]

judahrand commented on code in PR #38520:
URL: https://github.com/apache/arrow/pull/38520#discussion_r1422716152


##########
python/pyarrow/table.pxi:
##########
@@ -3986,6 +3986,59 @@ cdef class Table(_Tabular):
         result.validate()
         return result
 
+    @staticmethod
+    def from_struct_array(struct_array):
+        """
+        Construct a Table from a StructArray.
+
+        Each field in the StructArray will become a column in the resulting
+        ``Table``.
+
+        Parameters
+        ----------
+        struct_array : StructArray or ChunkedArray
+            Array to construct the table from.
+
+        Returns
+        -------
+        pyarrow.Table
+
+        Examples
+        --------
+        >>> import pyarrow as pa
+        >>> struct = pa.array([{'n_legs': 2, 'animals': 'Parrot'},
+        ...                    {'year': 2022, 'n_legs': 4}])
+        >>> pa.Table.from_struct_array(struct).to_pandas()
+          animals  n_legs    year
+        0  Parrot       2     NaN
+        1    None       4  2022.0
+        """
+        if isinstance(struct_array, Array):
+            struct_array = chunked_array([struct_array])
+        return Table.from_batches([
+            RecordBatch.from_struct_array(chunk)
+            for chunk in struct_array.chunks
+        ])

Review Comment:
   https://github.com/apache/arrow/pull/38520/commits/52a792a6d6b371322c3bc860301ecb21467afbe0



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