From 6b36b1befef5ffca2f524aca6448009ec92a894b Mon Sep 17 00:00:00 2001
From: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Date: Sun, 17 Jun 2018 04:00:42 -0700
Subject: [PATCH] `Iterator` provides a concrete `__iter__` in 2.7 (#2245)

This is already how it works in the Python 3 stub.

`Iterator.__iter__` also exists at runtime: https://github.com/python/cpython/blob/2.7/Lib/_abcoll.py#L73.
---
 stdlib/2/typing.pyi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/stdlib/2/typing.pyi b/stdlib/2/typing.pyi
index cc314d4fc..519a96d9d 100644
--- a/stdlib/2/typing.pyi
+++ b/stdlib/2/typing.pyi
@@ -118,6 +118,7 @@ class Iterable(Protocol[_T_co]):
 class Iterator(Iterable[_T_co], Protocol[_T_co]):
     @abstractmethod
     def next(self) -> _T_co: ...
+    def __iter__(self) -> Iterator[_T_co]: ...
 
 class Generator(Iterator[_T_co], Generic[_T_co, _T_contra, _V_co]):
     @abstractmethod