<s> class DynamicPreferencesException ( Exception ) : <EOL> detail_default = '<STR_LIT>' <EOL> def __init__ ( self , detail = None ) : <EOL> if detail is not None : <EOL> self . detail = str ( detail ) <EOL> else : <EOL> self . detail = str ( self . detail_default ) <EOL> def __str__ ( self ) : <EOL> return self . detail <EOL> class MissingDefault ( DynamicPreferencesException ) : <EOL> detail_default = '<STR_LIT>' <EOL> class NotFoundInRegistry ( DynamicPreferencesException , KeyError ) : <EOL> detail_default = '<STR_LIT>' <EOL> class DoesNotExist ( DynamicPreferencesException ) : <EOL> detail_default = '<STR_LIT>' <EOL> class CachedValueNotFound ( DynamicPreferencesException ) : <EOL> detail_default = '<STR_LIT>' </s>
