commit 50a48dad5579d67d7cae350f6ad5ae5c33f56abb
author Mark Shannon <mark@hotpy.org> Thu Jun 04 13:23:35 2020 +0100
committer GitHub <noreply@github.com> Thu Jun 04 13:23:35 2020 +0100
tree caba0849e1ea3e65a0f6c3cd933d5b4a6bd21138
parent 6e23a9c82b7fd2366003b9191cd93a9683b9d80c

Don't raise an exception on normal return from generator. (GH-19473)

Objects/genobject.c

diff --git a/Objects/genobject.c b/Objects/genobject.c
index 09efbab..1393f42 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -231,7 +231,8 @@
             if (PyAsyncGen_CheckExact(gen)) {
                 PyErr_SetNone(PyExc_StopAsyncIteration);
             }
-            else {
+            else if (arg) {
+                /* Set exception if not called by gen_iternext() */
                 PyErr_SetNone(PyExc_StopIteration);
             }
         }