Update nodes.py

Author: BobTheBuidler

mypy/nodes.py

@@ -7,7 +7,7 @@
 from collections import defaultdict
 from collections.abc import Iterator, Sequence
 from enum import Enum, unique
-from typing import TYPE_CHECKING, Any, Callable, Final, Optional, TypeVar, Union, cast
+from typing import TYPE_CHECKING, Any, Callable, Final, List, Optional, TypeVar, Union, cast
 from typing_extensions import TypeAlias as _TypeAlias, TypeGuard
 
 from mypy_extensions import trait
@@ -1759,6 +1759,7 @@ def accept(self, visitor: ExpressionVisitor[T]) -> T:
         return visitor.visit_int_expr(self)
 
 
+def is_IntExpr_list(items: List[Expression]) -> TypeGuard[List[IntExpr]]:
 # How mypy uses StrExpr and BytesExpr:
 #
 # b'x' -> BytesExpr