Json config files with a staticly defined structure.
This is common code which I used accross many projects.
A config file's structure is defined by subclassing Config
and filling the constructor with attribute assignments.
Then a file is loaded with the from_json
classmethod:
- If the file exists, it returns an instance of the config class.
- If the file does not exist, it creates one and raises a ConfigError.
The class Namespace
provides syntactic sugar around dicts.
from staticconfig import Namespace, Config
class MyConfig(Config):
def __init__(self):
super().__init__()
self.option1 = "default1"
self.option2 = 0
self.option3 = Namespace()
self.option3.suboption1 = True
self.option3.suboption2 = ["en", "de"]
# If the file doesn't exists this will create it with the default values and raise a ConfigError
config = MyConfig.from_json("config.json")
The produced config file:
{
"option1": "default1",
"option2": 0,
"option3": {
"suboption1": true,
"suboption2": [
"en",
"de"
]
}
}