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``default`` attributes, but you use it to perform serialization and
deserialization without calling its ``bind`` method:
- If ``validator`` is deferred, no validation will be performed.
- If ``missing`` is deferred, the field will be considered *required*.
- If ``default`` is deferred, the serialization default will be
assumed to be ``colander.null``.
Colander ======== An extensible package which can be used to: - deserialize and validate a data structure composed of strings, mappings, and lists. - serialize an arbitrary data structure to a data structure composed of strings, mappings, and lists. Please see `http://docs.repoze.org/colander <http://docs.repoze.org/colander>`_ for further documentation.