typing

Author: MarcoGorelli

pandas/core/interchange/column.py

@@ -161,7 +161,12 @@ def _dtype_from_pandasdtype(self, dtype) -> tuple[DtypeKind, int, str, str]:
             byteorder = dtype.byteorder
 
         if dtype == "bool[pyarrow]":
-            return kind, dtype.itemsize, ArrowCTypes.BOOL, byteorder
+            return (
+                kind,
+                type.itemsize,  # type: ignore[attr-defined]
+                ArrowCTypes.BOOL,
+                byteorder,
+            )
 
         return kind, dtype.itemsize * 8, dtype_to_arrow_c_fmt(dtype), byteorder
 
@@ -202,7 +207,8 @@ def describe_null(self):
             return column_null_dtype, null_value
         if isinstance(self._col.dtype, ArrowDtype):
             if all(
-                chunk.buffers()[0] is None for chunk in self._col.array._pa_array.chunks
+                chunk.buffers()[0] is None
+                for chunk in self._col.array._pa_array.chunks  # type: ignore[attr-defined]
             ):
                 return ColumnNullType.NON_NULLABLE, None
             return ColumnNullType.USE_BITMASK, 0
@@ -317,7 +323,6 @@ def _get_data_buffer(
             dtype = self.dtype
             arr = self._col.array
             if isinstance(self._col.dtype, ArrowDtype):
-                arr = self._col.array
                 buffer = PandasBufferPyarrow(
                     arr._pa_array, is_validity=False, allow_copy=self._allow_copy
                 )