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/Tools/i18n/msgfmt.py b/Tools/i18n/msgfmt.py
index 6433131..353be8b 100755
--- a/Tools/i18n/msgfmt.py
+++ b/Tools/i18n/msgfmt.py
@@ -110,7 +110,7 @@
 
     try:
         lines = open(infile).readlines()
-    except IOError, msg:
+    except IOError as msg:
         print >> sys.stderr, msg
         sys.exit(1)
 
@@ -167,7 +167,7 @@
 
     try:
         open(outfile,"wb").write(output)
-    except IOError,msg:
+    except IOError as msg:
         print >> sys.stderr, msg
 
 
@@ -176,7 +176,7 @@
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'hVo:',
                                    ['help', 'version', 'output-file='])
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(1, msg)
 
     outfile = None