Stowage/pyyaml
2
0
Fork 0
mirror of https://github.com/yaml/pyyaml.git synced 2025-10-19 11:03:18 +00:00
Code Issues Projects Releases Packages Wiki Activity
Canonical source repository for PyYAML
279 commits 29 branches 46 tags 2.5 MiB
Find a file
Phil Sphicas fc914d52c4 Avoid repeatedly appending to yaml_implicit_resolvers 
Repeated calls to `resolve` can experience performance degredation, if
`add_implicit_resolver` has been called with `first=None` (to add an
implicit resolver with an unspecified first character).

For example, every time `foo` is encountered, the "wildcard implicit
resolvers" (with `first=None`) will be appended to the list of implicit
resolvers for strings starting with `f`, which will normally be the
resolver for booleans. The list `yaml_implicit_resolvers['f']` will keep
getting longer. The same behavior applies for any first-letter matches
with existing implicit resolvers.

This change avoids unintentionally mutating the lists in the class-level
dict `yaml_implicit_resolvers` by looping through a temporary copy.

Fixes: #439
2021-01-13 16:58:40 -05:00
.github/workflows Start sentences and phrases for capital letters 2021-01-13 16:58:40 -05:00
examples Use full_load in yaml-highlight example (#359) 2019-12-20 20:38:46 +01:00
lib Avoid repeatedly appending to yaml_implicit_resolvers 2021-01-13 16:58:40 -05:00
lib3 Avoid repeatedly appending to yaml_implicit_resolvers 2021-01-13 16:58:40 -05:00
packaging/build Build modernization (GHA, wheels, setuptools) (#407) 2021-01-13 16:58:40 -05:00
tests Fix for CVE-2020-14343 2021-01-13 16:58:40 -05:00
yaml Build modernization (GHA, wheels, setuptools) (#407) 2021-01-13 16:58:40 -05:00
.appveyor.yml Add 3.9 to appveyor file for completeness sake 2021-01-13 16:58:40 -05:00
.gitignore Build modernization (GHA, wheels, setuptools) (#407) 2021-01-13 16:58:40 -05:00
announcement.msg Update list of maintainers 2020-04-01 00:57:16 +02:00
CHANGES Update announcement.msg 2020-03-18 14:09:19 -07:00
LICENSE Update announcement.msg 2020-03-18 14:09:19 -07:00
Makefile Changes for 4.1 release 2018-06-26 15:08:15 -07:00
MANIFEST.in Build modernization (GHA, wheels, setuptools) (#407) 2021-01-13 16:58:40 -05:00
pyproject.toml Add a newline character to end of pyproject.toml 2021-01-13 16:58:40 -05:00
README Add use of safe_load() function in README (#285) 2019-12-07 22:44:29 +01:00
setup.cfg Squash/merge pull request #105 from nnadeau/patch-1 2019-03-08 09:09:48 -08:00
setup.py Build modernization (GHA, wheels, setuptools) (#407) 2021-01-13 16:58:40 -05:00
tox.ini Add py29 to tox.ini envlist 2021-01-13 16:58:40 -05:00

README 

PyYAML - The next generation YAML parser and emitter for Python.

To install, type 'python setup.py install'.

By default, the setup.py script checks whether LibYAML is installed
and if so, builds and installs LibYAML bindings.  To skip the check
and force installation of LibYAML bindings, use the option '--with-libyaml':
'python setup.py --with-libyaml install'.  To disable the check and
skip building and installing LibYAML bindings, use '--without-libyaml':
'python setup.py --without-libyaml install'.

When LibYAML bindings are installed, you may use fast LibYAML-based
parser and emitter as follows:

    >>> yaml.load(stream, Loader=yaml.CLoader)
    >>> yaml.dump(data, Dumper=yaml.CDumper)

If you don't trust the input stream, you should use:

    >>> yaml.safe_load(stream)

PyYAML includes a comprehensive test suite.  To run the tests,
type 'python setup.py test'.

For more information, check the PyYAML homepage:
'https://github.com/yaml/pyyaml'.

For PyYAML tutorial and reference, see:
'http://pyyaml.org/wiki/PyYAMLDocumentation'.

Discuss PyYAML with the maintainers in IRC #pyyaml irc.freenode.net.

You may also use the YAML-Core mailing list:
'http://lists.sourceforge.net/lists/listinfo/yaml-core'.

Submit bug reports and feature requests to the PyYAML bug tracker:
'https://github.com/yaml/pyyaml/issues'.

The PyYAML module was written by Kirill Simonov <xi@resolvent.net>.
It is currently maintained by the YAML and Python communities.

PyYAML is released under the MIT license.
See the file LICENSE for more details.