mongodb - 数据库没有连接(mongodb - database is not connecting)

 您遇到的问题是由于您将传输套接字放在错误的列表中。 select.select()有两个列表，一个接收列表和一个发送列表。 因此，您需要更新该行 
 
    ready_socks,_,_ = select.select(socks, [], [])
 
 在publisher.py中改为阅读 
 
    _,ready_socks,_ = select.select([], socks, [])
 
 其中传输套接字作为第二个参数输入，套接字就绪在第二个返回值中。 如果你更新它，你的程序将工作。 但是，它会快速发送大量消息，因为您的程序没有延迟。 另外，如上所述，无法区分您的两个频道。 我想这是因为你减少了你的例子。 

The issue you are facing is due to you putting the transmit sockets in the wrong list. select.select() has two lists, a receive list and a transmit list. Thus, you need to update the line
 
    ready_socks,_,_ = select.select(socks, [], [])
 
in publisher.py to instead read
 
    _,ready_socks,_ = select.select([], socks, [])
 
where the transmit sockets are entered as the second argument and the sockets ready are in the second return value. If you update this, your program will work. However, it will send a large number of messages quickly, as you have no delays in your program. Also, as written, there is no way to distinguish between your two channels. I guess that is due to you reducing your example, though.