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declarative-looking spelling of schemas and schema nodes which have dependencies on values available after the schema has already been fully constructed. See the new narrative chapter in the documentation entitled "Schema Binding". - The interface of ``colander.SchemaNode`` has grown a ``__delitem__`` method. The ``__iter__``, and ``__getitem__`` methods have now also been properly documented.
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Colander
Colander is useful as a system for validating and deserializing data obtained via XML, JSON, an HTML form post or any other equally simple data serialization. Colander can be used to:
- Define a data schema.
- Deserialize a data structure composed of strings, mappings, and lists into an arbitrary Python structure after validating the data structure against a data schema.
- Serialize an arbitrary Python structure to a data structure composed of strings, mappings, and lists.
Colander is a good basis for form generation systems, data description systems, and configuration systems.
Out of the box, Colander can serialize and deserialize various types of objects, including:
- A mapping object (e.g. dictionary).
- A variable-length sequence of objects (each object is of the same type).
- A fixed-length tuple of objects (each object is of a different type).
- A string or Unicode object.
- An integer.
- A float.
- A decimal float.
- A boolean.
- An importable Python object (to a dotted Python object path).
- A Python
datetime.datetimeobject. - A Python
datetime.dateobject.
Colander allows additional data structures to be serialized and deserialized by allowing a developer to define new "types".
The error messages used by Colander's default types are internationalizable.
basics.rst null.rst extending.rst binding.rst interfaces.rst api.rst glossary.rst changes.rst
Indices and tables
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