config.py

import json
import argparse

import logger

def str2bool(v):
    """
    https://stackoverflow.com/questions/15008758/parsing-boolean-values-with-argparse
    """
    if isinstance(v, bool):
        return v
    if v.lower() in ("yes", "true", "t", "y", "1"):
        return True
    elif v.lower() in ("no", "false", "f", "n", "0"):
        return False
    else:
        raise argparse.ArgumentTypeError("boolean value expected")

def add_dict_to_argparser(parser, default_dict):
    for k, v in default_dict.items():
        v_type = type(v)
        if v is None:
            v_type = str
        elif isinstance(v, bool):
            v_type = str2bool
        parser.add_argument(f"--{k}", default=v, type=v_type)

def create_argparser():
    defaults = dict()
    with open('config_fb.json', 'r') as f:
        data = json.load(f)
    defaults.update(data)
    parser = argparse.ArgumentParser()
    add_dict_to_argparser(parser, defaults) # update latest args according to argparse
    return parser

args = create_argparser().parse_args()