Sync with files in zip

orderedmapping.py

@@ -0,0 +1,34 @@
+'''
+Module: orderedmapping.py
+Version: 1.0
+
+Author:
+   Taro Ogawa (tso@users.sourceforge.org)
+   
+Copyright:
+    Copyright (c) 2003, Taro Ogawa.  All Rights Reserved.
+
+Licence:
+    This module is distributed under the Lesser General Public Licence.
+    http://www.opensource.org/licenses/lgpl-license.php
+'''
+from __future__ import generators
+class OrderedMapping(dict):
+    def __init__(self, *pairs):
+        self.order = []
+        for key, val in pairs:
+            self[key] = val
+            
+    def __setitem__(self, key, val):
+        if key not in self:
+            self.order.append(key)
+        super(OrderedMapping, self).__setitem__(key, val)
+
+    def __iter__(self):
+        for item in self.order:
+            yield item
+
+    def __repr__(self):
+        out = ["%s: %s"%(repr(item), repr(self[item])) for item in self]
+        out = ", ".join(out)
+        return "{%s}"%out