The IValidator class is accessible via the formencode.interfaces module.
Instantiates this class with all the keywords being used to update the instance variables.
Convert value from its foreign representation to its Python representation. state is for application-specific hooks.
Convert value from its Python representation to the foreign representation. state is for application-specific hooks.
Return the message (from the messages attribute) that goes with name , or return default if name not found default .
See the source for more information.