binding.py 文件源码

def _handle_auth_error(msg):
    """Handle reraising HTTP authentication errors as something clearer.

    If an ``HTTPError`` is raised with status 401 (access denied) in
    the body of this context manager, reraise it as an
    ``AuthenticationError`` instead, with *msg* as its message.

    This function adds no round trips to the server.

    :param msg: The message to be raised in ``AuthenticationError``.
    :type msg: ``str``

    **Example**::

        with _handle_auth_error("Your login failed."):
             ... # make an HTTP request
    """
    try:
        yield
    except HTTPError as he:
        if he.status == 401:
            raise AuthenticationError(msg, he)
        else:
            raise