Simplify with built-in functions where possible. e.g.

change [x for x in y if x] to filter(None, y)
change [f(x) for x in y] to map(f, x)
change [x for x in y] to list(y)

These changes reduce source code size and complexity and produce some minor performance gains

svn: r14104

src/gen/lib/family.py

@@ -241,7 +241,7 @@ class Family(SourceBase, NoteBase, MediaBase, AttributeBase, LdsOrdBase,
         :returns: Returns the list of child objects that may carry textual data.
         :rtype: list
         """
-        add_list = [item for item in self.lds_ord_list if item]
+        add_list = filter(None, self.lds_ord_list)
         return self.media_list + self.attribute_list + \
                 self.source_list + add_list