utils.py 文件源码

def strip_version(endpoint):
    """Strip version from the last component of endpoint if present."""
    # NOTE(flaper87): This shouldn't be necessary if
    # we make endpoint the first argument. However, we
    # can't do that just yet because we need to keep
    # backwards compatibility.
    if not isinstance(endpoint, six.string_types):
        raise ValueError("Expected endpoint")

    version = None
    # Get rid of trailing '/' if present
    endpoint = endpoint.rstrip('/')
    url_parts = parse.urlparse(endpoint)
    (scheme, netloc, path, __, __, __) = url_parts
    path = path.lstrip('/')
    # regex to match 'v1' or 'v2.0' etc
    if re.match('v\d+\.?\d*', path):
        version = float(path.lstrip('v'))
        endpoint = scheme + '://' + netloc
    return endpoint, version