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/gui/views/treemodels/familymodel.py

@@ -129,7 +129,7 @@ class FamilyModel(FlatBaseModel):
         return unicode(gen.lib.FamilyRelType(data[5]))
 
     def column_marriage(self, data):
-        erlist = [ gen.lib.EventRef().unserialize(d) for d in data[6] ]
+        erlist = map(gen.lib.EventRef().unserialize, data[6])
         erlist = [x for x in erlist if x.get_role()==EventRoleType.FAMILY or 
                                        x.get_role()==EventRoleType.PRIMARY]
         event = self.db.marriage_from_eventref_list(erlist)
@@ -139,7 +139,7 @@ class FamilyModel(FlatBaseModel):
             return u''
 
     def sort_marriage(self, data):
-        erlist = [ gen.lib.EventRef().unserialize(d) for d in data[6] ]
+        erlist = map(gen.lib.EventRef().unserialize, data[6])
         event = self.db.marriage_from_eventref_list(erlist)
         if event:
             return "%09d" % event.date.get_sort_value()