ha.py

import json

import yaml

# these custom tags secretly register with the loader (yaml.SafeLoader) through the YAMLObjectMetaclass
# see list of HA specific tags see https://github.com/home-assistant/core/blob/56b99d2bc63755ddbe2273c4768c7345c2ee8abc/homeassistant/util/yaml/loader.py#L401
for tag in [
    '!include',
    '!env_var',
    '!secret',
    '!include_dir_list',
    '!include_dir_merge_list',
    '!include_dir_merge_named',
    '!include_dir_merge_named',
    '!input',
]:
    class _(yaml.YAMLObject):
        yaml_loader = yaml.SafeLoader
        yaml_tag = tag

        def __init__(self, val):
            self.val = val

        @classmethod
        def from_yaml(cls, loader, node):
            return cls(node.value)


def read_hass_configuration_yaml():
    files = ['/homeassistant/configuration.yaml', '/config/configuration.yaml', 'configuration.yaml']
    for fn in files:
        try:
            with open(fn, "r") as fp:
                return yaml.safe_load(fp)
                # return yaml.load(fp, Loader=yaml.Loader)
        except FileNotFoundError as e:
            pass
    raise FileNotFoundError('none of these files found %s' % files)


def read_user_options():
    files = ['/data/options.json', 'options.json']
    for fn in files:
        try:
            with open(fn, 'r') as f:
                return json.load(f)
        except FileNotFoundError:
            pass
    raise FileNotFoundError('none of these files found %s' % files)


if __name__ == "__main__":
    conf = read_hass_configuration_yaml()
    print(conf)