From dddca3b167894f793af79887ef12a7aa3e27ca16 Mon Sep 17 00:00:00 2001
From: EFanZh <efanzh@gmail.com>
Date: Wed, 8 Aug 2018 01:01:40 +0800
Subject: [PATCH] Add _field_defaults field to typing.NamedTuple (#2362)

---
 stdlib/3/typing.pyi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/stdlib/3/typing.pyi b/stdlib/3/typing.pyi
index 7d9ea2d8e..646b3fdf0 100644
--- a/stdlib/3/typing.pyi
+++ b/stdlib/3/typing.pyi
@@ -542,6 +542,7 @@ def cast(tp: Type[_T], obj: Any) -> _T: ...
 # NamedTuple is special-cased in the type checker
 class NamedTuple(tuple):
     _field_types = ...  # type: collections.OrderedDict[str, Type[Any]]
+    _field_defaults: Dict[str, Any] = ...
     _fields = ...  # type: Tuple[str, ...]
     _source = ...  # type: str