errors fixes

Author: Andre-Andreati

pandas/core/indexes/base.py

@@ -568,9 +568,12 @@ def __new__(
                 data = com.asarray_tuplesafe(data, dtype=_dtype_obj)
 
             #60925 should raise when one of index's items is a list and others are not
-            if any(isinstance(el, list) for el in data) and not all(isinstance(el, list) for el in data):
-                raise ValueError("Index names must all be hashable, or all lists to make MultiIndex")
-            
+            if (any(isinstance(el, list) for el in data) and
+                not all(isinstance(el, list) for el in data)):
+                raise ValueError(
+                    "Index names must all be hashable, or all lists to make MultiIndex"
+                )
+
         try:
             arr = sanitize_array(data, None, dtype=dtype, copy=copy)
         except ValueError as err:

pandas/tests/indexes/test_index_new.py

@@ -195,7 +195,7 @@ def test_constructor_list_between_elems(self):
         data = ['a', ['b', 'c'], ['b', 'c']]
         with pytest.raises(ValueError, match=msg):
             Index(data)
-            
+
         data = [['b', 'c'], ('b', 'c')]
         with pytest.raises(ValueError, match=msg):
             Index(data)