--- /usr/lib/python/cgi.py	2006-05-02 04:20:56.000000000 -0400
+++ ./cgi.py	2006-08-16 13:49:44.000000000 -0400
@@ -595,14 +595,14 @@
         else:
             return []
 
+    def __nonzero__(self):
+        return self.list and True or False
+
     def keys(self):
         """Dictionary style keys() method."""
         if self.list is None:
             raise TypeError, "not indexable"
-        keys = []
-        for item in self.list:
-            if item.name not in keys: keys.append(item.name)
-        return keys
+        return {}.fromkeys([item.name for item in self.list]).keys()
 
     def has_key(self, key):
         """Dictionary style has_key() method."""