SF patch 1631942 by Collin Winter:

(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block

Lib/CGIHTTPServer.py

@@ -320,7 +320,7 @@ def run_cgi(self):
                     sys.stdout = save_stdout
                     sys.stderr = save_stderr
                     os.chdir(save_cwd)
-            except SystemExit, sts:
+            except SystemExit as sts:
                 self.log_error("CGI script exit status %s", str(sts))
             else:
                 self.log_message("CGI script exited OK")