Once we're done with the sys module, remove it from the namespace so

this module is "import *" safe.

Lib/xml/sax/_exceptions.py

@@ -2,6 +2,7 @@
 import sys
 if sys.platform[:4] == "java":
     from java.lang import Exception
+del sys
 
 # ===== SAXEXCEPTION =====
 
@@ -103,6 +104,3 @@ class SAXNotSupportedException(SAXException):
     perform is requested (specifically setting a state or value). SAX
     applications and extensions may use this class for similar
     purposes."""
-
-
-