8.25.3 Functions defined in the mydict module

cascade( d,key)
Cascading lookup in a dictionary.

This is equivalent to the dict lookup, except that when the key is not found, a cascading lookup through lower level dict's is started and the first matching key found is returned.

returnNone( key)
Always returns None.

raiseKeyError( key)
Raise a KeyError.

__newobj__( cls)