reduce pandas.core usage [skip-ci]

Author: MarcoGorelli

pandas/core/interchange/column.py

@@ -9,13 +9,13 @@
 from pandas.errors import NoBufferPresent
 from pandas.util._decorators import cache_readonly
 
-from pandas.core.dtypes.dtypes import (
+from pandas.core.dtypes.dtypes import BaseMaskedDtype
+
+import pandas as pd
+from pandas import (
     ArrowDtype,
-    BaseMaskedDtype,
     DatetimeTZDtype,
 )
-
-import pandas as pd
 from pandas.api.types import is_string_dtype
 from pandas.core.interchange.buffer import (
     PandasBuffer,

pandas/core/interchange/utils.py

@@ -10,14 +10,13 @@
 
 from pandas._libs import lib
 
-from pandas.core.dtypes.dtypes import (
+from pandas import (
     ArrowDtype,
+    BooleanDtype,
     CategoricalDtype,
     DatetimeTZDtype,
 )
 
-from pandas.core.arrays.boolean import BooleanDtype
-
 if typing.TYPE_CHECKING:
     from pandas._typing import DtypeObj