figenv

Metaclass for handling configuration class objects using environment variables.

If an environment variable is specified, the metaclass will pull the variable from the environment, the variable defined on the class will be used.

This was built to be a dropin replacement for flask-env but supporting change environment variables after the meta class is loaded.

Config

There are 2 configuration options, that are set on the base class object.

ENV_LOAD_ALL = <True/False>

Setting this on the class will allow loading any environment variable even if it is not set on the base class.

ENV_PREFIX = <string>

Setting this will will be a prefix for variables in the environment.

Install

This should just be pip installed

python3 -m pip install figenv

Usage

The basic usecase is below.

 import os

 import figenv

 class Config(metaclass=figenv.MetaConfig):

     ENV_LOAD_ALL = True
     ENV_PREFIX = 'ROCKSTEADY_'

     BLAH = True
     TIMEOUT = 5
     POSTGRES_HOST = 'localhost'
     POSTGRES_PORT = 5432
     POSTGRES_USER = 'bebop'
     POSTGRES_PASS = 'secret'
     POSTGRES_DB = 'main'

     def SQLALCHEMY_DATABASE_URI(cls):
         return 'postgresql://{user}:{secret}@{host}:{port}/{database}?sslmode=require'.format(
             user=cls.POSTGRES_USER,
             secret=cls.POSTGRES_PASS,
             host=cls.POSTGRES_HOST,
             port=cls.POSTGRES_PORT,
             database=cls.POSTGRES_DATABASE,
         )

assert Config.TIMEOUT == 5
assert Config.BLAH is True
assert Config.SQLALCHEMY_DATABASE_URI == 'postgresql://bebop:secret@localhost:5432/public?sslmode=require'
try:
    Config.WHAT
except AttributeError:
    pass

os.environ.update({
    'ROCKSTEADY_BLAH': 'false',
    'ROCKSTEADY_TIMEOUT': '15',
    'ROCKSTEADY_WHAT': '2.9',
    'ROCKSTEADY_SQLALCHEMY_DATABASE_URI': 'postgres://localhost:5432/db',
})

assert Config.TIMEOUT == 15
assert Config.BLAH is False
assert Config.WHAT == 2.9
assert Config.SQLALCHEMY_DATABASE_URI == 'postgres://localhost:5432/db'

Release files for figenv 0.2.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for figenv 0.2.0
File	Size	Uploaded
figenv-0.2.0.tar.gz	3.6 kB	Feb 22, 2021	Details

Built distribution (wheel)

Table of built distributions (wheels) for figenv 0.2.0
File	Interpreter	ABI	Platform	Reset
figenv-0.2.0-py3-none-any.whl 3.3 kB Feb 22, 2021	Python 3	none	any	Details

Total release size: 6.9 kB

Release files / figenv-0.2.0.tar.gz

Download URL	figenv-0.2.0.tar.gz
Size	3.6 kB
Tags	Source
SHA-256 checksum How to use checksums	`a3bf543d26dbcfbfcae7c57531ba74a1af46c9d1e13525601bc6149fcd44edc5`
BLAKE2b-256 checksum How to use checksums	`4436feefb059e926f14db9c3a3325387f4f6e30d563bd71486a674606637ebc4`
Upload date	Feb 22, 2021
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/3.3.0 pkginfo/1.7.0 requests/2.25.1 setuptools/53.0.0 requests-toolbelt/0.9.1 tqdm/4.57.0 CPython/3.9.2`

Release files / figenv-0.2.0-py3-none-any.whl

Download URL	figenv-0.2.0-py3-none-any.whl
Size	3.3 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`371d6a51cba76b59ef6d02d4fe7d837dd8f720ccc3a1d22439eabc4a526c8008`
BLAKE2b-256 checksum How to use checksums	`eb75fa58090b9be6a62b47bd72b2d653b927050270e4841e14547c4fdaaa0f1a`
Upload date	Feb 22, 2021
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/3.3.0 pkginfo/1.7.0 requests/2.25.1 setuptools/53.0.0 requests-toolbelt/0.9.1 tqdm/4.57.0 CPython/3.9.2`