@property
    def reason(self):
        """ The reason phrase attached to this response.
        """
        if self.__reason:
            return self.__reason
        else:
            try:
                return responses[self.status_code]
            except __HOLE__:
                if self.status_code == 422:
                    return "Unprocessable Entity"
                else:
                    raise SystemError("HTTP status code %s is not known by the "
                                      "Python standard library" % self.status_code)
dataset/ETHPy150Open nigelsmall/httpstream/httpstream/http.py/Response.reason