[prev in list] [next in list] [prev in thread] [next in thread] 

List:       pykde
Subject:    Re: PyQt5-5.15.3 problem: "ImportError: Failed to import any qt binding"
From:       ullix <ullix () urkam ! de>
Date:       2021-03-02 9:29:05
Message-ID: ec725ed0-4db8-245e-5f8f-8335ef744ce2 () urkam ! de
[Download RAW message or body]


Am 02.03.21 um 09:57 schrieb Phil Thompson:
> On 02/03/2021 08:46, ullix wrote:
> > Same result on Py3.6, Py3.7, Py3.8, Py3.9, running in a venv:
> > 
> > all works fine when using PyQt5-5.15.2, but after upgrading to
> > PyQt5-5.15.3 it fails.
> > 
> > The traceback message is:
> > 
> > ...
> > File "/home/ullix/geigerlog/geigerlog/gsup_utils.py", line 69, in 
> > <module>
> > import matplotlib.backends.backend_qt5agg
> > File
> > "/home/ullix/geigerlog/vgl39/lib/python3.9/site-packages/matplotlib/backends/backend_qt5agg.py", \
> >  
> > line 11, in <module>
> > from .backend_qt5 import (
> > File
> > "/home/ullix/geigerlog/vgl39/lib/python3.9/site-packages/matplotlib/backends/backend_qt5.py", \
> >  
> > line 16, in <module>
> > import matplotlib.backends.qt_editor.figureoptions as figureoptions
> > File
> > "/home/ullix/geigerlog/vgl39/lib/python3.9/site-packages/matplotlib/backends/qt_editor/figureoptions.py", \
> >  
> > line 11, in <module>
> > from matplotlib.backends.qt_compat import QtGui
> > File
> > "/home/ullix/geigerlog/vgl39/lib/python3.9/site-packages/matplotlib/backends/qt_compat.py", \
> >  
> > line 177, in <module>
> > raise ImportError("Failed to import any qt binding")
> > ImportError: Failed to import any qt binding
> > 
> > 
> > Does 5.15.3 have a known bug?
> > 
> > What does the error even mean, do I need to program differently?
> > 
> > Going back to 5.15.2 makes everything fine again.
> > 
> > ullix
> 
> Have you read this...
> 
> https://www.riverbankcomputing.com/pipermail/pyqt/2021-February/043644.html 
> 
> 
> Phil


Thanks.

Well, using Py3.9 the plain uninstall/ install cycle with either only 
PyQt5, only PyQt5-sip, or both by:

          python3 -m pip uninstall pyqt5-sip pyqt5

did NOT work, and resulted in the same error


However, the force-reinstall, worked, though it claimed to already have 
that installation:

$ python3 -m pip install --force-reinstall PyQt5-Qt
Collecting PyQt5-Qt
    Using cached PyQt5_Qt-5.15.2-py3-none-manylinux2014_x86_64.whl (59.9 MB)
Installing collected packages: PyQt5-Qt
    Attempting uninstall: PyQt5-Qt
        Found existing installation: PyQt5-Qt 5.15.2
        Uninstalling PyQt5-Qt-5.15.2:
            Successfully uninstalled PyQt5-Qt-5.15.2
Successfully installed PyQt5-Qt-5.15.2

Pip now finds these packages:

      PyQt5                       5.15.3
      PyQt5-Qt                 5.15.2
      PyQt5-sip               12.8.1

Is a fix on the way? It is getting cumbersome to explain to the users of 
my software what all extra steps to take. :-(

ullix


[prev in list] [next in list] [prev in thread] [next in thread]