Fix styling issues.

Author: DriesSchaumont

pandas/core/indexing.py

@@ -17,7 +17,7 @@
 from pandas._config.config import option_context
 
 from pandas._libs.indexing import NDFrameIndexerBase
-from pandas._libs.lib import item_from_zerodim, infer_dtype
+from pandas._libs.lib import item_from_zerodim
 from pandas.errors import (
     AbstractMethodError,
     InvalidIndexError,
@@ -966,11 +966,12 @@ def _validate_key(self, key, axis: int):
         # slice of integers (only if in the labels)
         # boolean not in slice and with boolean index
         if not is_bool_dtype(self.obj.index) and isinstance(key, bool):
-            raise TypeError('Boolean label can not be used without a boolean index')
+            raise TypeError("Boolean label can not be used without a boolean index")
 
-        if isinstance(key, slice) and \
-            (isinstance(key.start, bool) or isinstance(key.stop, bool)):
-            raise TypeError('Boolean values can not be used in a slice')
+        if isinstance(key, slice) and (
+            isinstance(key.start, bool) or isinstance(key.stop, bool)
+        ):
+            raise TypeError("Boolean values can not be used in a slice")
 
     def _has_valid_setitem_indexer(self, indexer) -> bool:
         return True

pandas/tests/indexing/test_loc.py

@@ -23,6 +23,7 @@
     DatetimeIndex,
     Index,
     IndexSlice,
+    Int64Index,
     MultiIndex,
     Period,
     RangeIndex,
@@ -37,7 +38,6 @@
     to_timedelta,
 )
 import pandas._testing as tm
-from pandas.errors import InvalidIndexError
 from pandas.api.types import is_scalar
 from pandas.tests.indexing.common import Base
 
@@ -2092,56 +2092,51 @@ class TestLocBooleanLabelsAndSlices(Base):
     @pytest.mark.parametrize(
         "index",
         [
-            pd.RangeIndex(4),
-            pd.Int64Index(range(4)),
-            pd.UInt64Index(range(4)),
+            RangeIndex(4),
+            Int64Index(range(4)),
+            UInt64Index(range(4)),
             pd.Float64Index(range(4)),
-            pd.CategoricalIndex(range(4)),
-            pd.date_range(0, periods=4, freq="ns"),
-            pd.timedelta_range(0, periods=4, freq="ns"),
+            CategoricalIndex(range(4)),
+            date_range(0, periods=4, freq="ns"),
+            timedelta_range(0, periods=4, freq="ns"),
             pd.interval_range(0, periods=4),
-            pd.Index([0, 1, 2, 3], dtype=object),
-            pd.MultiIndex.from_product([[0, 1], [0, 1]]),
-            pd.period_range("2018Q1", freq="Q", periods=4)
-        ]
+            Index([0, 1, 2, 3], dtype=object),
+            MultiIndex.from_product([[0, 1], [0, 1]]),
+            pd.period_range("2018Q1", freq="Q", periods=4),
+        ],
     )
     def test_loc_bool_incompatible_index_raises(self, index, frame_or_series):
         # GH20432
-        message = 'Boolean label can not be used without a boolean index'
+        message = "Boolean label can not be used without a boolean index"
         obj = frame_or_series(range(4), index=index)
         with pytest.raises(TypeError, match=message):
             obj.loc[True]
 
-    @pytest.mark.parametrize(
-        "index",
-        [
-            pd.Index([True, False], dtype="boolean")
-        ]
-    )
+    @pytest.mark.parametrize("index", [Index([True, False], dtype="boolean")])
     def test_loc_bool_should_not_raise(self, index, frame_or_series):
         obj = frame_or_series(range(2), index=index)
         obj.loc[True]
 
     @pytest.mark.parametrize(
         "index",
         [
-            pd.RangeIndex(4),
-            pd.Int64Index(range(4)),
-            pd.UInt64Index(range(4)),
+            RangeIndex(4),
+            Int64Index(range(4)),
+            UInt64Index(range(4)),
             pd.Float64Index(range(4)),
-            pd.CategoricalIndex(range(4)),
-            pd.date_range(0, periods=4, freq="ns"),
-            pd.timedelta_range(0, periods=4, freq="ns"),
+            CategoricalIndex(range(4)),
+            date_range(0, periods=4, freq="ns"),
+            timedelta_range(0, periods=4, freq="ns"),
             pd.interval_range(0, periods=4),
-            pd.Index([0, 1, 2, 3], dtype=object),
-            pd.Index([True, True, False, False], dtype=object),
-            pd.MultiIndex.from_product([[0, 1], [0, 1]]),
-            pd.period_range("2018Q1", freq="Q", periods=4)
-        ]
+            Index([0, 1, 2, 3], dtype=object),
+            Index([True, True, False, False], dtype=object),
+            MultiIndex.from_product([[0, 1], [0, 1]]),
+            pd.period_range("2018Q1", freq="Q", periods=4),
+        ],
     )
     def test_loc_bool_slice_raises(self, index, frame_or_series):
         # GH20432
-        message = 'Boolean values can not be used in a slice'
+        message = "Boolean values can not be used in a slice"
         obj = frame_or_series(range(4), index=index)
         with pytest.raises(TypeError, match=message):
             obj.loc[True:False]