不要包装任何类,如果可以的话,可以import py文件进行处理,python还有一个方法是使得方法函数转化为main...
ValueError:signal only worksinmain thread Traceback(most recent call last)File"/Library/Python/2.7/site-packages/flask/app.py",line1836,in__call__returnself.wsgi_app(environ,start_response)File"/Library/Python/2.7/site-packages/flask/app.py",line1820,inwsgi_app response=self.make_response(self...
ValueError: signal only works in main thread# 或者twisted.internet.error.ReactorNotRestartable 解决的办法有几个。 1 使用python子进程(subproccess) 首先,确保目录结构类似如下: > tree -L1├──dirbot├── README.rst ├──scrapy.cfg├── server.py └── setup.py 然后在,新进程中启动爬虫: ...
_SignalReactorMixin._handleSignals(self) File "/Library/Python/2.7/site-packages/twisted/internet/base.py", line 1154, in _handleSignals signal.signal(signal.SIGINT, self.sigInt) ValueError: signal only works in main thread 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. ...
signal.signal(signal.SIGINT, self.sigInt) ValueError: signal only works in main thread 我的scrapy代码是这样的: class EPGD(Item): genID = Field() genID_url = Field() taxID = Field() taxID_url = Field() familyID = Field() familyID_url = Field() ...
二、ValueError: signal only works in main thread ERROR:tornado.application:Exception in callback (<zmq.sugar.socket.Socket object at 0x7f44c4d698d0>, <function wrap.<locals>.null_wrapper at 0x7f44c4d02378>) Traceback (most recent call last): ...
简介 Django、Flask、scrapy都包含了一个“信号分配器”，使得当一些动作在框架的其他地方发生的时候，...
scrapy shellcreates aCrawlerProcessobject, runs some of its initialization code and then runs its start() method in a separate thread. Currently this means the signal handlers are installed in the main thread too, and the first thought is that we would want to keep that. But I don't think...
connect(s.spider_opened, signal=signals.spider_opened) return s def process_spider_input(self, response, spider): # Called for each response that goes through the spider # middleware and into the spider. # Should return None or raise an exception. return None def process_spider_output(self,...
至少还有一种方法可以做到这一点，这里还没有介绍，那就是使用crochet库。为了演示，我们创建了一个最小...