commit 26e0f51280af636e63001c6eee8c210a3db0d2c5
author Walter Dörwald <walter@livinglogic.de> Tue Jun 12 16:51:31 2007 +0000
committer Walter Dörwald <walter@livinglogic.de> Tue Jun 12 16:51:31 2007 +0000
tree a2e7bf8439d4a0dd76d6ffac0cd69262e687647e
parent 42748a8d6dc121d5311668a0fe005c277b7d0220

Mention name of left operand, if "foo in unicode_string"
fails.

Objects/unicodeobject.c

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 39b7462..bb4036a 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -6001,8 +6001,9 @@
     /* Coerce the two arguments */
     sub = PyUnicode_FromObject(element);
     if (!sub) {
-	PyErr_SetString(PyExc_TypeError,
-	    "'in <string>' requires string as left operand");
+	PyErr_Format(PyExc_TypeError,
+	    "'in <string>' requires string as left operand, not %s",
+	    element->ob_type->tp_name);
         return -1;
     }