use ImportError

Author: jreback

pandas/core/arrays/_mask.py

@@ -31,7 +31,7 @@ def get_mask_array_type():
         class MaskArray(_MaskArray, ArrowBoolArray):
             pass
 
-    except (ModuleNotFoundError, ImportError):
+    except ImportError:
         from pandas.core.arrays._numpy_bool import NumpyBoolArray
 
         class MaskArray(_MaskArray, NumpyBoolArray):

pandas/core/arrays/_pyarrow_bool.py

@@ -16,11 +16,14 @@
 from pandas.api.extensions import (
     ExtensionArray, ExtensionDtype, register_extension_dtype, take)
 
+
+# we require pyarrow >= 0.10.0
+
 try:
     import pyarrow as pa
     if pa.__version__ < LooseVersion('0.10.0'):
         raise ImportError("pyarrow minimum for bool suppport is 0.10.0")
-except ModuleNotFoundError:
+except ImportError:
     raise