python-json-config 1.0.0

This library allows to load json configs and access the values like members (i.e., via dots), validate config field types and values and transform config fields.

Overview

This library allows to load json configs and access the values like members (i.e., config.server.port instead of config['server']['port']), validate the data types of fields and transform the values of fields.

Installing

pip install git+https://github.com/janehmueller/python-json-config

Usage

from python_json_config import ConfigBuilder
from datetime import datetime

# create config parser
builder = ConfigBuilder()

# assert that port contains an int value
builder.validate_field_type('server.port', int)

# assert that the port is not a reserved port 
builder.validate_field_value('server.port', lambda port: port > 1024)

# parse a date string (e.g., Jun 1 2005) into a datetime object
builder.transform_field_value('important_date', lambda date: datetime.strptime(date, '%b %d %Y'))

# parse config
config = builder.parse_config('path/to/config.json')

# access config values
port = config.server.port
assert isinstance(port, int)
important_date = config.important_date
assert isinstance(important_date, datetime)