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/distutils/command/upload.py

@@ -184,7 +184,7 @@ class upload(Command):
             http.putheader('Authorization', auth)
             http.endheaders()
             http.send(body)
-        except socket.error, e:
+        except socket.error as e:
             self.announce(str(e), log.ERROR)
             return