'Raises stored :class:`HTTPError`, if one occurred.'

def raise_for_status(self):

    http_error_msg = ''
    if (400 <= self.status_code < 500):
        http_error_msg = ('%s    Client    Error:    %s    for    url:    %s' % (self.status_code, self.reason, self.url))
    elif (500 <= self.status_code < 600):
        http_error_msg = ('%s    Server    Error:    %s    for    url:    %s' % (self.status_code, self.reason, self.url))
    if http_error_msg:
        raise HTTPError(http_error_msg, response=self)
