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Python lib/cli for JSON/YAML schema validation, fork of pykwalify with added features

Project description


pykwalifire is a fork of the YAML/JSON validation library pykwalify. It adds the following features.

New features

Specify custom file extensions for YAML and JSON data files [1.7.0]

In order to be able to validate JSON or YAML files with non-default file extensions, the following two options have been introduced:

  • -y EXT, --yaml-extension EXT to specify a custom extension EXT, allowing to validate YAML files such as my-yaml-file.yext.
  • -j EXT, --json-extension EXT to specify a custom extension EXT, allowing to validate JSON files such as my-json-file.jext.

Support Python 3.x exclusively [2.0.1]

pykwalifire drops support for Python 2.7. Python 2.x will not be maintained past 2020, and its default ascii encoding makes it a nightmare for unicode support. To be able to use pykwalifire you must use it with Python 3.

Default ruamel YAML parser [2.0.1]

As PyYAML, the most widely used YAML parser in the Python world, does not support YAML 1.2, ruamel.yaml is the default parser for pykwalifire.


Cf. pykwalify.


pykwalifire is available from PyPI:

Install it with

pip install pykwalifire

Basic usage

Create a data file. JSON and YAML formats are both supported.

- foo
- bar

Create a schema file with validation rules.

type: seq
  - type: str

Validate the file from the command line:

pykwalifire -d data.yaml -s schema.yaml

If the YAML data file would be called data.customextension, you would validate it with

pykwalifire -d data.customextension -s schema.yaml -y customextension


For further documentation, please see the pykwalify documentation.


pykwalifire is licensed under the MIT license, cf. license file.

pykwalify branch

The pykwalify branch is used to create pull requests against the upstream repository. Hopefully this way all work that’s been done in pykwalifire can be contributed back to the original project.

Thanks @Grokzen for creating a great piece of open source software!

Change Log

2.0.1 (2017-12-20)

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1.7.3 (2017-12-18)

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1.7.2 (2017-12-18)

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1.7.1 (2017-12-18)

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1.7.0 (2017-12-13)

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1.6.0 (2017-01-22)

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1.5.2 (2016-11-12)

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1.5.1 (2016-03-06)

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1.5.0 (2015-09-30)

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1.4.1 (2015-08-27)

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1.4.0 (2015-08-04)

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1.3.0 (2015-07-13)

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1.2.0 (2015-05-19)

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1.1.0 (2015-04-04)

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1.0.1 (2015-03-08)

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1.0.0 (2015-03-08)

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15.01 (2015-01-17)

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14.12 (2014-12-24)

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14.08 (2014-08-24)

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14.06.1 (2014-06-23)

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14.06 (2014-06-07)

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0.1.2 (2013-01-26)

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v0.1.1 (2013-01-21)

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v0.1.0 (2013-01-20)

* This Change Log was automatically generated by `github_changelog_generator <>`__

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