config_util.py 文件源码

def replace_vars(data, repl_vars):
    """Return the given data structure with appropriate variables replaced.

    Args:
        data (Any): Data of an arbitrary type.

    Returns:
        Any: Data of the same time, possibly with replaced values.
    """
    if isinstance(data, (six.text_type, six.binary_type)):
        for k, v in repl_vars.items():
            data = data.replace('${' + k + '}', v)
        return data
    if isinstance(data, collections.Sequence):
        return type(data)([replace_vars(d, repl_vars) for d in data])
    if isinstance(data, collections.Mapping):
        return type(data)([(k, replace_vars(v, repl_vars))
                           for k, v in data.items()])
    return data