Closes #13291: NameError in xmlrpc package.
diff --git a/Lib/xmlrpc/client.py b/Lib/xmlrpc/client.py
index 19d4d69..9312344 100644
--- a/Lib/xmlrpc/client.py
+++ b/Lib/xmlrpc/client.py
@@ -302,7 +302,7 @@
         elif datetime and isinstance(other, datetime.datetime):
             s = self.value
             o = other.strftime("%Y%m%dT%H:%M:%S")
-        elif isinstance(other, (str, unicode)):
+        elif isinstance(other, str):
             s = self.value
             o = other
         elif hasattr(other, "timetuple"):