exc.py 文件源码

def __init__(self, message=None, code=None):
        super(HTTPException, self).__init__(message)
        try:
            self.error = jsonutils.loads(message)
            if 'error' not in self.error:
                raise KeyError(_('Key "error" not exists'))
        except KeyError:
            # NOTE(jianingy): If key 'error' happens not exist,
            # self.message becomes no sense. In this case, we
            # return doc of current exception class instead.
            self.error = {'error':
                          {'message': self.__class__.__doc__}}
        except Exception:
            self.error = {'error':
                          {'message': self.message or self.__class__.__doc__}}
        if self.code == "N/A" and code is not None:
            self.code = code