On 1/30/2018 10:54 AM, Nicholas Cole wrote: > I have a strange problem on python 3.6.1 [involving multiprocessing] I think the first thing you should do is upgrade to 3.6.4 to get all the bugfixes since 3.6.4. I am pretty sure there have been some for multiprocessing itself. *Then* see if you still have a problem. -- Terry Jan Reedy