unfortunately we can't kill compiler_new_tmpname here

Python/compile.c

@@ -551,6 +551,16 @@ compiler_exit_scope(struct compiler *c)
 
 }
 
+/* Allocate a new "anonymous" local variable.  Used by with statements. */ 	 
+	  	 
+static PyObject * 	 
+compiler_new_tmpname(struct compiler *c) 	 
+{ 	 
+	char tmpname[256]; 	 
+	PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]", ++c->u->u_tmpname); 	 
+	return PyUnicode_FromString(tmpname); 	 
+}
+
 /* Allocate a new block and return a pointer to it.
    Returns NULL on error.
 */