python
diff --git a/‎mypy/checker.py‎
Lines changed: 2 additions & 1 deletion b/‎mypy/checker.py‎
Lines changed: 2 additions & 1 deletion
@@ -6714,7 +6714,8 @@ def narrow_type_by_identity_equality(
                 target = TypeRange(target_type, is_upper_bound=False)
 
                 if_map, else_map = conditional_types_to_typemaps(
-                    operands[i], *conditional_types(expr_type, [target], consider_promotion_overlap=True)
+                    operands[i],
+                    *conditional_types(expr_type, [target], consider_promotion_overlap=True),
                 )
                 if is_target_for_value_narrowing(get_proper_type(target_type)):
                     all_if_maps.append(if_map)
Original file line number	Diff line number	Diff line change
`@@ -6714,7 +6714,8 @@ def narrow_type_by_identity_equality(`
`6714`	`6714`	`target = TypeRange(target_type, is_upper_bound=False)`
`6715`	`6715`
`6716`	`6716`	`if_map, else_map = conditional_types_to_typemaps(`
`6717`		`- operands[i], *conditional_types(expr_type, [target], consider_promotion_overlap=True)`
	`6717`	`+ operands[i],`
	`6718`	`+ *conditional_types(expr_type, [target], consider_promotion_overlap=True),`
`6718`	`6719`	`)`
`6719`	`6720`	`if is_target_for_value_narrowing(get_proper_type(target_type)):`
`6720`	`6721`	`all_if_maps.append(if_map)`