commit af03757d20a13b4090d06e0a198122be194aa6b0
author Victor Stinner <victor.stinner@gmail.com> Sun Apr 14 18:44:10 2013 +0200
committer Victor Stinner <victor.stinner@gmail.com> Sun Apr 14 18:44:10 2013 +0200
tree aecef262f4fc65205624efe127afa1ccac0247c5
parent 322cc7438c081e19d0402f53e720d6b0cd58b227

Optimize ascii(str): don't encode/decode repr if repr is already ASCII

Objects/object.c

diff --git a/Objects/object.c b/Objects/object.c
index fd1fd25..79f1c8a 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -451,6 +451,9 @@
     if (repr == NULL)
         return NULL;
 
+    if (PyUnicode_IS_ASCII(repr))
+        return repr;
+
     /* repr is guaranteed to be a PyUnicode object by PyObject_Repr */
     ascii = _PyUnicode_AsASCIIString(repr, "backslashreplace");
     Py_DECREF(repr);