commit ce071ca4e76b67060f55c6ed6fd9a7433cb66013
author Benjamin Peterson <benjamin@python.org> Fri Jul 29 14:23:47 2011 -0500
committer Benjamin Peterson <benjamin@python.org> Fri Jul 29 14:23:47 2011 -0500
tree 92ad6b3e0b6c42c342f3ad1886902b6aa14107f6
parent e12c0b1767309ec1fe727e91f8d4c0cfae4a88a8

bytes should be verboten in sum() (fixes #12654)

Python/bltinmodule.c

diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 291ef45..82fb9ad 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1888,6 +1888,11 @@
             Py_DECREF(iter);
             return NULL;
         }
+        if (PyBytes_Check(result)) {
+            PyErr_SetString(PyExc_TypeError,
+                "sum() can't sum bytes [use b''.join(seq) instead]");
+            return NULL;
+        }
         if (PyByteArray_Check(result)) {
             PyErr_SetString(PyExc_TypeError,
                 "sum() can't sum bytes [use b''.join(seq) instead]");