Use newer form of catching exceptions

autopep8 -i --select=W602
Also some other minor deprecated syntax changes, like "while 1".
I did not commit the less obvious changes.

modules/creditdunord/pages.py

@@ -52,7 +52,7 @@ class CDNBasePage(BasePage):
             if start < 0:
                 continue
 
-            while 1:
+            while True:
                 if value is None:
                     value = ''
                 else: