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
diff --git a/Lib/encodings/uu_codec.py b/Lib/encodings/uu_codec.py
index 43fb93c..3baf779 100644
--- a/Lib/encodings/uu_codec.py
+++ b/Lib/encodings/uu_codec.py
@@ -81,7 +81,7 @@
             break
         try:
             data = a2b_uu(s)
-        except binascii.Error, v:
+        except binascii.Error as v:
             # Workaround for broken uuencoders by /Fredrik Lundh
             nbytes = (((ord(s[0])-32) & 63) * 4 + 5) / 3
             data = a2b_uu(s[:nbytes])