Arch Linux

darkmav

Member

Registered: 2012-01-21

Posts: 127

Unable to access Spyder all of a sudden

I have "spyder 4.2.4-1" installed, and I had been using it until recently, when something happened and Spyder stopped working.

$ spyder
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/qtpy/__init__.py", line 204, in <module>
    from PySide import __version__ as PYSIDE_VERSION  # analysis:ignore
ModuleNotFoundError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/spyder", line 3, in <module>
    start.main()
  File "/usr/lib/python3.9/site-packages/spyder/app/start.py", line 209, in main
    from spyder.app import mainwindow
  File "/usr/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 45, in <module>
    requirements.check_qt()
  File "/usr/lib/python3.9/site-packages/spyder/requirements.py", line 41, in check_qt
    import qtpy
  File "/usr/lib/python3.9/site-packages/qtpy/__init__.py", line 210, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

I have already looked at a similar thread (https://bbs.archlinux.org/viewtopic.php?id=260320) but I haven't been able to fix this. I had loaned my computer to a colleague who might have accidentally run pip, which is indeed a possible cause. But I'd appreciate any help that would let me debug this. Thanks!

Mrhawkbox

Member

Registered: 2020-11-23

Posts: 63

Re: Unable to access Spyder all of a sudden

I have already looked at a similar thread (https://bbs.archlinux.org/viewtopic.php?id=260320) but I haven't been able to fix this. I had loaned my computer to a colleague who might have accidentally run pip, which is indeed a possible cause. But I'd appreciate any help that would let me debug this. Thanks!

Honestly I posted something like this earlier. I can run spider just fine but pygame doesnt work. I'm seriously wondering if its the qtconsole dependency every time I boot I get a warning about qtconsole not being updated. it's only 5.0.1 in the aur its asking for 5.0.3 because it may break dependencies. I could be wrong. Would you let me know if you find out?

Mrhawkbox

Member

Registered: 2020-11-23

Posts: 63

Re: Unable to access Spyder all of a sudden

I have "spyder 4.2.4-1" installed, and I had been using it until recently, when something happened and Spyder stopped working.

$ spyder
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/qtpy/__init__.py", line 204, in <module>
    from PySide import __version__ as PYSIDE_VERSION  # analysis:ignore
ModuleNotFoundError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/spyder", line 3, in <module>
    start.main()
  File "/usr/lib/python3.9/site-packages/spyder/app/start.py", line 209, in main
    from spyder.app import mainwindow
  File "/usr/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 45, in <module>
    requirements.check_qt()
  File "/usr/lib/python3.9/site-packages/spyder/requirements.py", line 41, in check_qt
    import qtpy
  File "/usr/lib/python3.9/site-packages/qtpy/__init__.py", line 210, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

I have already looked at a similar thread (https://bbs.archlinux.org/viewtopic.php?id=260320) but I haven't been able to fix this. I had loaned my computer to a colleague who might have accidentally run pip, which is indeed a possible cause. But I'd appreciate any help that would let me debug this. Thanks!

I know there is an easier way to do this but if it isn't pip it wouldnt help. I suggest typing / in a browser and tyaking a cursery glance at system changes.

darkmav

Member

Registered: 2012-01-21

Posts: 127

Re: Unable to access Spyder all of a sudden

I know there is an easier way to do this but if it isn't pip it wouldnt help. I suggest typing / in a browser and tyaking a cursery glance at system changes.

I'm not sure I follow your suggestion. Could you perhaps rephrase?
I have not found a solution yet, but I will be sure to post one if I do.

By the way, I tried to install Spyder on a clean install of Arch Linux on another system, and I am able to get it to work (of course). I salvaged the dependencies I needed to install to get spyder to work.

pacman -S python-atomicwrites python-chardet python-cloudpickle python-diff-match-patch python-intervaltree ipython python-jedi python-jsonschema python-keyring jupyter-nbconvert python-numpydoc python-parso python-pexpect python-pickleshare python-psutil python-pygments python-pylint python-pyqt5 python-pyqtwebengine qt5-webkit python-language-server python-pyls-black python-pyls-spyder python-xdg python-pyzmq python-qdarkstyle python-qtawesome python-qtconsole python-qtpy python-setuptools python-sphinx python-spyder-kernels python-textdistance python-three-merge python-watchdog

Needless to say, executing this command on the computer where Spyder is failing to execute, also did not help.
So whatever pip did is very sinister indeed!

Last edited by darkmav (2021-03-28 05:03:40)

paulkerry

Member

From: Sheffield, UK

Registered: 2014-10-02

Posts: 611

Re: Unable to access Spyder all of a sudden

If your colleague ran pip, then if they did so as a user and not root it should be easy to clean up -  does...

pip list --user

return anything as the same user?
If so, you could uninstall packages as the user (not root), with...

pip uninstall {package}

or if there are a lot of packages, or you want to clean everything out...

rm -rf ~/.local/bin ~/.local/lib

which is where pip installs to as a user (it's been like this for a while when newer versions of pip defaulted to using "--user").
Creating a new user and testing what works might help you out here?

If things weren't installed as a user but as root, you will have to clear out changes to the system directories which may take you some time, and also probably use things like...

pacman -Qkk {packagename}

Cheers
Paul.