python console with iPython very slow with qt4 backend on mac os x
已回答
Hi,
With python 3.5 and python 3.6, I've noticed a considerable slow-down in the python console when using qt4 in ipython like this:
%gui qt
which gives me:
<PyQt4.QtGui.QApplication at 0x113372f78>
The first commands are still responding quick but after a few commands that only involve numpy and a few array of size (512 x 512) it slows down, and without using display / graphics, and no import of matplotlib. If I don't use the qt backend but the default macosx then it's fine.
It also happens when I change the backend with matplotlib imported and doing matplotlib.use('Qt4Agg')
Any idea what can cause such slow-down and how to fix?
Thanks
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I have a very similar problem. Any time matplotlib is imported I suffer extreme slow downs to the point where pycharm ipython is unusable.
Hi,
Thank you for contacting PyCharm support.
Please reproduce the problem and then upload your logs folder zipped (Help | Show Log in...) to https://uploads.services.jetbrains.com/ and provide the name of the zip file. Do you have any ThreadDumps in your logs folder? If no you need to record it manually as described here: https://intellij-support.jetbrains.com/entries/23348667
Looking forward to your reply.
Kind regards,
Sergey
https://www.jetbrains.com
The Drive to Develop
Hello Sergey,
I have actually submitted some sort of report here https://youtrack.jetbrains.com/issue/PY-31931, which has logs attached. Is this what you need?
Thanks,
Tom
Sergey I have responded more fully at the youtrack link, but I have found when I click on any other program other than the IDE, the command completes. Otherwise it takes a few seconds for simple commands such as "3".