The compound module is accessible via the formencode module.
This class is like an 'or' operator for validators. The first validator/converter that validates the value will be used. (You can pass in lists of validators, which will be ANDed)
This class contains 21 members.
This class is like an 'and' operator for validators. All validators must work, and the results are passed in turn through all validators for conversion.
This class contains 25 members.
See the source for more information.