From 2f47624b19d53db7667c54dd6bcf2232e1dc24e3 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Thu, 15 Mar 2018 21:26:40 -0400
Subject: [PATCH] Allow DontReadFromInput to produce iterator without error.
 Fixes #3314.

---
 _pytest/capture.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/_pytest/capture.py b/_pytest/capture.py
index 6e2139445..6545e6fa3 100644
--- a/_pytest/capture.py
+++ b/_pytest/capture.py
@@ -574,7 +574,10 @@ class DontReadFromInput(object):
         raise IOError("reading from stdin while output is captured")
     readline = read
     readlines = read
-    __iter__ = read
+    __next__ = read
+
+    def __iter__(self):
+        return self
 
     def fileno(self):
         raise UnsupportedOperation("redirected stdin is pseudofile, "