> > On Dec 4, 2019, at 4:53 PM, Kerby Geffrard <kerby.geffr...@autodesk.com> > wrote: > > I think you can try to use a QThread for this.
I was under the impression that QThreads had the same limitations that regular python threads had, but I’ll give it a shot. The need to subclass QThread rather than simply being able to execute a function complicates things however - I have to make sure that said subclass has access to all the original class members it needs. --- Israel Brewster Software Engineer Alaska Volcano Observatory Geophysical Institute - UAF 2156 Koyukuk Drive Fairbanks AK 99775-7320 Work: 907-474-5172 cell: 907-328-9145 > > Le 4 déc. 2019 à 18:41, Israel Brewster <ijbrews...@alaska.edu> a écrit : >> >> I know this is a FAQ, however I haven’t been able to make any of the >> standard answers work for me. Here’s the situation: >> >> - using PySide2 5.12.2 >> - I have an object (QMainWindow subclass) that contains most of the code for >> my application >> - One of the functions that runs in response to user input takes around 2 >> seconds to run. The GUI obviously freezes during this time (BAD!) >> - Said function needs to access and modify several large variables (pandas >> data frames) from the main object >> >> So here’s the problem: If I run this function as a separate (python) thread, >> that doesn’t help - the GUI is still frozen. I’m thinking this is due to the >> GIL, but I could be wrong about that. Running under the multiprocessing >> module, however, doesn’t appear to be an option due to the number and size >> of the data structures that the function needs to modify, and if I try just >> to see what happens, the process actually crashes. >> >> So what are my options here? How can I keep the GUI responsive while this >> function runs, without being able to spin it off as a separate process? Or >> is the only option going to be to completely rip apart the function and try >> to re-build it in such a way that it can, somehow, still access the memory >> from the main thread, while doing the processing in a separate function? >> --- >> Israel Brewster >> Software Engineer >> Alaska Volcano Observatory >> Geophysical Institute - UAF >> 2156 Koyukuk Drive >> Fairbanks AK 99775-7320 >> Work: 907-474-5172 >> cell: 907-328-9145 >> >> _______________________________________________ >> PySide mailing list >> PySide@qt-project.org >> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.qt-2Dproject.org_listinfo_pyside&d=DwIGaQ&c=76Q6Tcqc-t2x0ciWn7KFdCiqt6IQ7a_IF9uzNzd_2pA&r=Sh-EhW_r32FEgrsAfK3Hc0du2ebOZ7PrbchABO_xtMo&m=r4Ron7tNrQN9BNhzXVlsKvYoyWrnjjOzLwALVV_CgnA&s=T2UjSQWTnYFAfFbfdTlMgLZnfC1dlXhNy1SmPijkWbs&e= >>
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