From: Raymond Hettinger <python@rcn.com>
Date: Sun, 2 Mar 2008 12:02:19 +0000 (+0000)
Subject: Handle 0-tuples which can be singletons.
X-Git-Tag: v2.6a2~429
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e3fabd10cb898a93cf32d743d44ca85290b78f07;p=python

Handle 0-tuples which can be singletons.
---

diff --git a/Modules/itertoolsmodule.c b/Modules/itertoolsmodule.c
index bd5543cae7..62b2c19b90 100644
--- a/Modules/itertoolsmodule.c
+++ b/Modules/itertoolsmodule.c
@@ -1919,7 +1919,7 @@ product_next(productobject *lz)
 			Py_DECREF(old_result);
 		}
 		/* Now, we've got the only copy so we can update it in-place */
-		assert (Py_REFCNT(result) == 1);
+		assert (npools==0 || Py_REFCNT(result) == 1);
 
                 /* Update the pool indices right-to-left.  Only advance to the
                    next pool when the previous one rolls-over */