'Fills `settings` with values from `settings.py` and env.'

def init(self, args=None):

    from .logs import exception
    self._setup_user_dir()
    self._init_settings_file()
    try:
        self.update(self._settings_from_file())
    except Exception:
        exception("Can't    load    settings    from    file", sys.exc_info())
    try:
        self.update(self._settings_from_env())
    except Exception:
        exception("Can't    load    settings    from    env", sys.exc_info())
    self.update(self._settings_from_args(args))
