Fixed #23530 -- Specified PyYAML requirement in initial-data.txt

A fixture is a collection of data that Django knows how to import into a

database. The most straightforward way of creating a fixture if you've already

got some data is to use the :djadmin:`manage.py dumpdata <dumpdata>` command.

Or, you can write fixtures by hand; fixtures can be written as XML, YAML, or

JSON documents. The :doc:`serialization documentation </topics/serialization>`

has more details about each of these supported :ref:`serialization formats

<serialization-formats>`.

Or, you can write fixtures by hand; fixtures can be written as JSON, XML or YAML

(with PyYAML_ installed) documents. The :doc:`serialization documentation

</topics/serialization>` has more details about each of these supported

:ref:`serialization formats <serialization-formats>`.

.. _PyYAML: http://www.pyyaml.org/

As an example, though, here's what a fixture for a simple ``Person`` model might

look like in JSON: