core.py 文件源码

def _parse_yaml_file(fname):
    # type: (str) -> Dict[str, Any]
    """Parse YAML file with environment variable substitution.

    Parameters
    ----------
    fname : str
        yaml file name.

    Returns
    -------
    table : Dict[str, Any]
        the yaml file as a dictionary.
    """
    content = read_file(fname)
    # substitute environment variables
    content = string.Template(content).substitute(os.environ)
    return yaml.load(content)