environconfig

environconfig allows you to use environment variables in Python with a declarative syntax.

A quick example:

from environconfig import EnvironConfig
from environconfig import StringVar, IntVar

class DBCfg(EnvironConfig):
    """Database configuration from the environment."""
    HOSTNAME = StringVar(default='localhost')
    PORT = IntVar(default=3306)
    USERNAME = StringVar()
    PASSWORD = StringVar()
    CHARSET = StringVar(default='utf8mb4')
    NAME = StringVar(default='mydatabase')

# Now you can start using it
connection = pymysql.connect(host=DBCfg.HOSTNAME,
                             user=DBCfg.USERNAME,
                             password=DBCfg.PASSWORD,
                             db=DBCfg.NAME,
                             charset=DBCfg.CHARSET,
                             cursorclass=pymysql.cursors.DictCursor)

You can check more examples in the examples directory.

Features

• Built-in basic types: String, Bool, Int, Float...
• Easy Customizable: CustomVar (just pass a callable to make the conversion)
• No mocking necessary for testing: Just instantiate your config with a dictionary.
• Easy build complex constructions with environment data: See MethodVar

Collaboration

• We are always open to pull requests and accept new var types.