def _load_yml(yaml_path) ->None:
    """
    Load global yaml file if one exist.
    :param yaml_path:
    :return: None
    """
    global _YAML_DATA
    with open(yaml_path, 'r') as yaml_file:
        data = yaml_file.read()
        _YAML_DATA += data
    if 'paths' not in _YAML_DATA:
        _YAML_DATA += 'paths:\n'
