The Strangely Familiar Config Parser
Reason this release was yanked:
Deprecated API
Project description
>> The Strangely Familiar Config Parser <<
Konfik is a simple configuration parser that helps you access your config variables using dot (.) notation. This lets you to do this —
foo_bar_bazz = config.FOO.BAR.BAZZ
— instead of this —
foo_bar_bazz = config["FOO"]["BAR"]["BAZZ"]
Konfik currently supports TOML, YAML, DOTENV and JSON configuration formats.
⚙️ Installation
Install Konfik via pip:
pip install konfik
💡 Usage
Let's see how you can parse a TOML config file and access the variables there. For demonstration, we'll be using the following config.toml
file:
# Contents of `config.toml`
title = "TOML Example"
[owner]
name = "Tom Preston-Werner"
dob = 1979-05-27T07:32:00-08:00 # First class dates
[servers]
[servers.alpha]
ip = "10.0.0.1"
dc = "eqdc10"
[servers.beta]
ip = "10.0.0.2"
dc = "eqdc10"
[clients]
data = [ ["gamma", "delta"], [1, 2] ]
To parse this in Python:
from konfik import Konfik
# Define the config path
CONFIG_PATH_TOML = "config.toml"
# Initialize the konfik class
konfik = Konfik(config_path=CONFIG_PATH_TOML)
# Serialize and print the confile file
konfik.serialize()
# Get the configuration dictionary from the konfik class
config_toml = konfik.config
# Access and print the variables
title = config_toml.title
owner = config_toml.owner
dob = config_toml.owner.dob
database = config_toml.database.ports
server_ip = config_toml.servers.alpha.ip
clients = config_toml.clients
The .serialize()
method will print your entire config file as a colorized Python dictionary object like this:
{
'title': 'TOML Example',
'owner': {
'name': 'Tom Preston-Werner',
'dob': datetime.datetime(1979, 5, 27, 7, 32, tzinfo=<toml.tz.TomlTz object at
0x7f2dfca308b0>)
},
'database': {
'server': '192.168.1.1',
'ports': [8001, 8001, 8002],
'connection_max': 5000,
'enabled': True
},
'servers': {
'alpha': {'ip': '10.0.0.1', 'dc': 'eqdc10'},
'beta': {'ip': '10.0.0.2', 'dc': 'eqdc10'}
},
'clients': {'data': [['gamma', 'delta'], [1, 2]]}
}
Konfik also exposes a few command-line options for you to introspect your config file and variables. Run:
konfik --help
This will reveal the options associated with the CLI tool:
usage: konfik [-h] [--show SHOW] [--path PATH] [--serialize] [--version]
Konfik CLI
optional arguments:
-h, --help show this help message and exit
--show SHOW show variables from config file
--path PATH add custom config file path
--serialize print the serialized config file
--version print konfik-cli version number
To inspect the value of a specific variable in a config.toml
file you can run:
konfik --show servers.alpha.ip
If you're using a config that's not named as config.toml
then you can deliver the path using the --path
argument like this:
konfik --path examples/config.env --show name
🙋 Why
While working with machine learning models, I wanted an easier way to tune the model parameters without mutating the Python files. I needed something that would simply enable me to access tuple or dictionary data structures from a config file. I couldn't find anything that doesn't try to do a gazillion of other kinds of stuff or doesn't come with the overhead of a significant learning curve.
Neither DOTENV nor YAML catered to my need as I was after something that gives me the ability to store complex data structures without a lot of fuss — so TOML it is. However, Konfik also supports DOTENV, JSON and YAML. Moreover, not having to write angle brackets —["key"]
— to access dictionary values is nice!
🎉 Contribution
-
Clone the repo
-
Spin up and activate your virtual environment. You can use anything between Python 3.6 to Python 3.9.
-
Install poetry
-
Install the dependencies via:
poetry install
-
Make your changes to the
konfik/main.py
file -
Run the tests via the following command. Make sure you've Python 3.6 - Python 3.9 installed, otherwise Tox would throw an error.
make test
-
Write a simple unit test for your change
-
Run the linter via:
make linter
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