kaptan

kaptan

|pypi| |docs| |build-status| |coverage| |license|

configuration parser.

installation

.. code-block:: console

$ pip install kaptan

Also available as a package on FreeBSD, Debian, Arch Linux and Slackware.

usage

supported handlers

• dict
• json
• yaml
• .ini
• python file

default (dict) handler

.. code-block:: python

config = kaptan.Kaptan()
config.import_config({
    'environment': 'DEV',
    'redis_uri': 'redis://localhost:6379/0',
    'debug': False,
    'pagination': {
        'per_page': 10,
        'limit': 20,
    }
})

print config.get("pagination.limit")

# output: 20

json handler

.. code-block:: python

config = kaptan.Kaptan(handler="json")
config.import_config('{"everything": 42}')

print config.get("everything")
# output: 42

yaml handler

.. code-block:: python

config = kaptan.Kaptan(handler="yaml")
config.import_config("""
product:
  price:
    value: 12.65
    currency_list:
      1. TL
      2. EURO
""")
print config.get("product.price.currency_list.0")
# output: TL

or you can get from directly from the filename:

config.import_config("configuration.yaml")

.ini handler

config.ini

.. code-block:: ini

[development] database_uri = mysql://root:123456@localhost/posts

[production] database_uri = mysql://poor_user:poor_password@localhost/poor_posts

.. code-block:: python

config = kaptan.Kaptan(handler="ini")
config.import_config('config.ini')

print config.get("production.database_uri")
# output: mysql://poor_user:poor_password@localhost/poor_posts

file handler

config.py

.. code-block:: python

DATABASE = 'mysql://root:123456@localhost/posts'
DEBUG = False
PAGINATION = {
    'per_page': 10,
    'limit': 20,
}

.. code-block:: python

config = kaptan.Kaptan(handler="file") config.import_config('config')

print config.get("DEBUG")

output: False

exporting configuration

.. code-block:: python

config = kaptan.Kaptan(handler="file")
config.import_config({
    'environment': 'DEV',
    'redis_uri': 'redis://localhost:6379/0',
    'debug': False,
    'pagination': {
        'per_page': 10,
        'limit': 20,
    }
})

print config.export("yaml")

output:

.. code-block:: yaml

debug: false
environment: DEV
pagination: {limit: 20, per_page: 10}
redis_uri: redis://localhost:6379/0

print config.export("json")

outputs unindented json. .export accepts kwargs which pass into json.dumps.

.. _json.dumps: http://docs.python.org/2/library/json.html#json.dump

.. code-block:: python

print config.export("json", indent=4)

output:

.. code-block:: json

{
    "environment": "DEV",
    "debug": false,
    "pagination": {
        "per_page": 10,
        "limit": 20
    },
    "redis_uri": "redis://localhost:6379/0"
}

config.export('yaml') also supports the kwargs for pyyaml_.

.. _kwargs for pyyaml: http://pyyaml.org/wiki/PyYAMLDocumentation#Dumper

New in Version 0.5.7: config.export('yaml', safe=True) will use .safe_dump.

cli

exporting (defaults to json)

.. code-block:: console

$ echo "environment: DEV" > config.yaml
$ kaptan config.yaml --export json > config.json
$ cat config.json
{"environment": "DEV"}

getting a value

.. code-block:: console

$ kaptan config.yaml --key environment
DEV

specifying the handler

.. code-block:: console

$ mv config.yaml config.settings
$ kaptan config.settings:yaml --export json
{"environment": "DEV"}

config from stdin

.. code-block:: console

$ echo '{"source": "stdin"}' | kaptan -
{"source": "stdin"}
$ echo 'source: stdin' | kaptan -:yaml
{"source": "stdin"}

merging configs

.. code-block:: console

$ echo "environment: PROD" > config.settings $ echo '{"source": "stdin"}' | kaptan - config.json config.settings:yaml {"environment": "PROD", "source": "stdin"}

setting default handler

.. code-block:: console

$ echo "source: stdin" | kaptan --handler yaml - config.settings
{"environment": "PROD", "source": "stdin"}

writing json with yaml

.. code-block:: console

$ kaptan -:yaml -e json
<type yaml here>
<Ctrl + D>
<get json here>

running tests

with py.test:

.. code-block:: console

$ py.test

contributors

• Cenk Altı <http://github.com/cenkalti>_
• Wesley Bitter <http://github.com/Wessie>_
• Mark Steve <http://github.com/marksteve>_
• Tony Narlock <http://github.com/tony>_
• Berker Peksag <http://github.com/berkerpeksag>_
• Pradyun S. Gedam <https://github.com/pradyunsg>_

see more at https://github.com/emre/kaptan/graphs/contributors.

.. |pypi| image:: https://img.shields.io/pypi/v/kaptan.svg :alt: Python Package :target: http://badge.fury.io/py/kaptan

.. |build-status| image:: https://github.com/emre/kaptan/actions/workflows/tests.yml/badge.svg :alt: Build Status :target: https://github.com/emre/kaptan/actions/workflows/tests.yml

.. |coverage| image:: https://codecov.io/gh/emre/kaptan/branch/master/graph/badge.svg :alt: Code Coverage :target: https://codecov.io/gh/emre/kaptan

.. |license| image:: https://img.shields.io/github/license/emre/kaptan.svg :alt: License

.. |docs| image:: https://readthedocs.org/projects/kaptan/badge/?version=latest :alt: Documentation Status :scale: 100% :target: https://readthedocs.org/projects/kaptan/