PyYAML

PyYAML project is a YAML emitter and parser for Python. PyYAML features a complete YAML 1.1 parser, Unicode support, pickle support, capable extension API, and sensible error messages.

PyYAML supports standard YAML tags and provides Python-specific tags that allow the representation of an arbitrary Python object. PyYAML is applicable for a broad range of tasks from complex configuration files to object serialization and persistence.

Features:

• a complete YAML 1.1 parser. In particular, PyYAML can parse all examples from the specification. The parsing algorithm is simple enough to be a reference for YAML parser implementors.
• Unicode support including UTF-8/UTF-16 input/output and u escape sequences.
• low-level event-based parser and emitter API (like SAX).
• high-level API for serializing and deserializing native Python objects (like DOM or pickle).
• support for all types from the YAML types repository. A simple extension API is provided.
• relatively sensible error messages.

What is new in this release:

• Fixed use of uninitialized memory when emitting anchors with LibYAML bindings (Thank to cegner(at)yahoo-inc(dot)com).
• Fixed emitting incorrect BOM characters for UTF-16 (Thank to Valentin Nechayev)
• Fixed the emitter for folded scalars not respecting the preferred line width (Thank to Ingy).
• Fixed a subtle ordering issue with emitting %TAG directives (Thank to Andrey Somov).
• Fixed performance regression with LibYAML bindings.

What is new in version 3.07:

• The emitter learned to output scalars with leading whitespaces in a block style.
• The test suite is refactored and included in the source distribution.
• The path resolver in CDumper has been fixed.
• An explicit document end indicator is forced when there is a possibility of parsing ambiguity.
• There are other minor fixes and improvements.

What is new in version 3.06:

• The setup.py script detects LibYAML and builds LibYAML bindings automatically.
• Building LibYAML bindings no longer requires Pyrex installed.
• 'yaml.load()' raises an exception if the input stream contains more than one YAML document.
• Exceptions produced by LibYAML bindings have been fixed.
• A dot '.' character being recognized as !!float has been fixed.
• A Python 2.3 compatibility issue in constructing !!timestamp values has been fixed.
• The attributes 'yaml.__version__' and 'yaml.__with_libyaml__' have been added.

Requirements:

• Python