[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/checkexpr.py

@@ -4016,7 +4016,6 @@ def check_op_reversible(
             op_name, variants, left_type, right_type, left_expr, right_expr, context
         )
 
-
     def _lookup_operator(self, op_name: str, base_type: Type, context: Context) -> Type | None:
         """Look up the given operator and return the corresponding type, if it exists."""
 
@@ -4040,7 +4039,6 @@ def _lookup_operator(self, op_name: str, base_type: Type, context: Context) -> T
             )
             return None if w.has_new_errors() else member
 
-
     def _lookup_definer(self, typ: Instance, attr_name: str) -> str | None:
         """Returns the name of the class that contains the actual definition of attr_name.
 
@@ -4057,7 +4055,6 @@ def _lookup_definer(self, typ: Instance, attr_name: str) -> str | None:
                 return cls.fullname
         return None
 
-
     def _determine_operator_order(
         self,
         op_name: str,
@@ -4111,7 +4108,6 @@ def _determine_operator_order(
             (rev_op_name, right_op, right_type, left_expr),
         ]
 
-
     def _attempt_operator_applications(
         self,
         op_name: str,