Kaptan

kaptan

configuration manager w/ dict/file/json/yaml/ini handlers for python applications.

installation

pip install kaptan

or if you like 90s:

easy_install kaptan

or add kaptan directory to the your path.

usage

supported handlers

- dict
- json
- yaml
- .ini
- python file

default (dict) handler

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

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

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

yaml handler

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

.ini handler

config.ini

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

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

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

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

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

print config.get("DEBUG")
# output: False

exporting configuration

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:

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

print config.export("json")

output:

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

running tests

$ py.test tests.py
======================================================================================================== test session starts ========================================================================================================
platform linux2 -- Python 2.7.3 -- pytest-2.3.5
collected 9 items 

tests.py .........

===================================================================================================== 9 passed in 0.06 seconds ======================================================================================================