pyspider 出现Could not contact DNS servers)？

Question

这个问题 HTTP 599: Could not resolve: www.baidu.com (Could not contact DNS servers) 用ip没问题,搜索引擎内容没有合适的
python2.7 win10 切换python3.6之后会出现操作数过多的问题，故改回2.7
本地localhost也不行
完整报错

[E 180322 10:58:07 base_handler:203] HTTP 599: Could not resolve: www.hao123.com (Could not contact DNS servers)

Traceback (most recent call last):
  File "g:\python27\lib\site-packages\pyspider\libs\base_handler.py", line 196, in run_task
    result = self._run_task(task, response)
  File "g:\python27\lib\site-packages\pyspider\libs\base_handler.py", line 175, in _run_task
    response.raise_for_status()
  File "g:\python27\lib\site-packages\pyspider\libs\response.py", line 172, in raise_for_status
    six.reraise(Exception, Exception(self.error), Traceback.from_string(self.traceback).as_traceback())
  File "g:\python27\lib\site-packages\pyspider\fetcher\tornado_fetcher.py", line 378, in http_fetch
    response = yield gen.maybe_future(self.http_client.fetch(request))
  File "g:\python27\lib\site-packages\tornado\httpclient.py", line 105, in fetch
    self._async_client.fetch, request, **kwargs))
  File "g:\python27\lib\site-packages\tornado\ioloop.py", line 582, in run_sync
    return future_cell[0].result()
  File "g:\python27\lib\site-packages\tornado\concurrent.py", line 260, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
Exception: HTTP 599: Could not resolve: www.hao123.com (Could not contact DNS servers)