def __init__(self, _raw, message=None):
        """Construct a HTTPException.

        :params _raw: The internal request library response object. This object
            is mapped to attribute `_raw` whose format may change at any time.

        """
        if not message:
            message = 'HTTP error'
        super(HTTPException, self).__init__()
        self._raw = _raw
        self.message = message
Construct a HTTPException.

        :params _raw: The internal request library response object. This object
            is mapped to attribute `_raw` whose format may change at any time.

        
rtv/packages/praw/errors.py