======================= Announcing PyYAML-5.4b1 ======================= A beta release of PyYAML is now available: https://github.com/yaml/pyyaml/releases/tag/5.4b1 This release contains a security fix for CVE-2020-14343. It removes the python/module, python/object, and python/object/new tags from the FullLoader. YAML that uses these tags must be loaded by UnsafeLoader, or a custom loader that has explicitly enabled them. This beta release also adds Python wheels for manylinux1 (x86_64) and MacOS (x86_64) with the libyaml extension included (built on libyaml 0.2.5). We believe these wheels to be stable, but please take the opportunity to test against your local Linux and MacOS environments, and file any issues at https://github.com/yaml/pyyaml/issues. PyYAML 5.4 will be the last release to support Python 2.7. Changes ======= * https://github.com/yaml/pyyaml/pull/407 -- build modernization, remove distutils, fix metadata, build wheels, CI to GHA * https://github.com/yaml/pyyaml/pull/472 -- fix for CVE-2020-14343, moves arbitrary python tags to UnsafeLoader * https://github.com/yaml/pyyaml/pull/441 -- fix memory leak in implicit resolver setup * https://github.com/yaml/pyyaml/pull/392 -- fix py2 copy support for timezone objects * https://github.com/yaml/pyyaml/pull/378 -- fix compatibility with Jython Resources ========= PyYAML IRC Channel: #pyyaml on irc.freenode.net PyYAML homepage: https://github.com/yaml/pyyaml PyYAML documentation: http://pyyaml.org/wiki/PyYAMLDocumentation Source and binary installers: https://pypi.org/project/PyYAML/ GitHub repository: https://github.com/yaml/pyyaml/ Bug tracking: https://github.com/yaml/pyyaml/issues YAML homepage: http://yaml.org/ YAML-core mailing list: http://lists.sourceforge.net/lists/listinfo/yaml-core About PyYAML ============ YAML is a data serialization format designed for human readability and interaction with scripting languages. PyYAML is a YAML parser and emitter 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 to represent an arbitrary Python object. PyYAML is applicable for a broad range of tasks from complex configuration files to object serialization and persistence. Example =======

...

...

import yaml

...

...

yaml.full_load(""" ... name: PyYAML ... description: YAML parser and emitter for Python ... homepage: https://github.com/yaml/pyyaml ... keywords: [YAML, serialization, configuration, persistence, pickle] ... """) {'keywords': ['YAML', 'serialization', 'configuration', 'persistence', 'pickle'], 'homepage': 'https://github.com/yaml/pyyaml', 'description': 'YAML parser and emitter for Python', 'name': 'PyYAML'}

...

...

print(yaml.dump(_)) name: PyYAML homepage: https://github.com/yaml/pyyaml description: YAML parser and emitter for Python keywords: [YAML, serialization, configuration, persistence, pickle]

Maintainers =========== The following people are currently responsible for maintaining PyYAML: * Ingy döt Net * Matt Davis and many thanks to all who have contribributed! See: https://github.com/yaml/pyyaml/pulls Copyright ========= Copyright (c) 2017-2020 Ingy döt Net Copyright (c) 2006-2016 Kirill Simonov The PyYAML module was written by Kirill Simonov . It is currently maintained by the YAML and Python communities. PyYAML is released under the MIT license. See the file LICENSE for more details.