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Differences with PyYAML
=======================
.. parsed-literal::
*If I have seen further, it is by standing on the shoulders of giants*.
Isaac Newton (1676)
``ruamel.yaml`` is a derivative of Kirill Simonov's `PyYAML 3.11
<https://bitbucket.org/xi/pyyaml>`_ and would not exist without that
excellent base to start from.
The following a summary of the major differences with PyYAML 3.11
.. _yaml-1-2-support:
Defaulting to YAML 1.2 support
------------------------------
PyYAML supports the `YAML 1.1`_ standard, ``ruamel.yaml`` supports
`YAML 1.2`_ as released in 2009.
- YAML 1.2 dropped support for several features unquoted ``Yes``,
``No``, ``On``, ``Off``
- YAML 1.2 no longer accepts strings that start with a ``0`` and solely
consist of number characters as octal, you need to specify such strings with
``0o[0-7]+`` (zero + lower-case o for octal + one or more octal characters).
- YAML 1.2 no longer supports `sexagesimals
<https://en.wikipedia.org/wiki/Sexagesimal>`_, so the string scalar
``12:34:56`` doesn't need quoting.
- ``\/`` escape for JSON compatibility
- correct parsing of floating point scalars with exponentials
unless the YAML document is loaded with an explicit ``version==1.1`` or
the document starts with::
% YAML 1.1
, ``ruamel.yaml`` will load the document as version 1.2.
PY2/PY3 reintegration
---------------------
``ruamel.yaml`` re-integrates the Python 2 and 3 sources, running on
Python 2.6, 2.7 (CPython, PyPy), 3.3, 3.4, 3.5. It is more easy to
extend and maintain as only a miniscule part of the code is version
specific.
Fixes
-----
- ``ruamel.yaml`` follows the ``indent`` keyword argument on scalars
when dumping.
Testing
-------
``ruamel.yaml`` is tested using `tox`_ and `py.test`_. In addition to
new tests the original PyYAML
test framework is called from within ``tox`` runs.
Before versions are pushed to PyPI, ``tox`` is invoked, and has to pass, on all
Python versions, PyPI as well as flake8/pep8
.. include:: links.rst
|
