def test_twistederrors(self):
        exceptions = [defer.TimeoutError, TCPTimedOutError, TimeoutError,
                DNSLookupError, ConnectionRefusedError, ConnectionDone,
                ConnectError, ConnectionLost]
        if (11, 1, 0) >= twisted_version: # http11 available
            exceptions.append(ResponseFailed)

        for exc in exceptions:
            req = Request('http://www.scrapytest.org/%s' % exc.__name__)
            self._test_retry_exception(req, exc('foo'))
dataset/ETHPy150Open scrapy/scrapy/tests/test_downloadermiddleware_retry.py/RetryTest.test_twistederrors/swapped operands of `>=`