TypeError in Tour with Python 3.10

[Fellypao]

Issue Report Checklist

• Searched the issues page for similar reports
• [ X] Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• [ X] Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• [not appliable ] Could not reproduce inside jupyter qtconsole (if console-related)
• [ X] Tried basic troubleshooting (if a bug/error)
  • [not appliable ] Restarted Spyder
  • [ X] Reset preferences with spyder --reset
  • [ not appliable] Reinstalled the latest version of Anaconda
  • [ not appliable] Tried the other applicable steps from the Troubleshooting Guide
• [ X] Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

Spyder does not start/work with python 3.10.
The error returned is:

TypeError: arguments did not match any overloaded call:
  scaled(self, int, int, aspectRatioMode: Qt.AspectRatioMode = Qt.IgnoreAspectRatio, transformMode: Qt.TransformationMode = Qt.FastTransformation): argument 1 has unexpected type 'float'
  scaled(self, QSize, aspectRatioMode: Qt.AspectRatioMode = Qt.IgnoreAspectRatio, transformMode: Qt.TransformationMode = Qt.FastTransformation): argument 1 has unexpected type 'float'

What steps reproduce the problem?

1. Upgrade to (or install) python 3.10
2. follow the steps to install Spyder using pip (python3 -m venv spyder-env -> source spyder-env/bin/activate -> pip3 install spyder)
3. launch Spyder with the commmand spyder

What is the expected output? What do you see instead?

Expected: to start the Spyder IDE
I see the error

Paste Traceback/Error Below (if applicable)

Traceback (most recent call last):
  File "/home/fellype/progs_nao_instalaveis/spyder-env/bin/spyder", line 8, in <module>
    sys.exit(main())
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/app/start.py", line 236, in main
    mainwindow.main(options, args)
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/app/mainwindow.py", line 1992, in main
    mainwindow = create_window(MainWindow, app, splash, options, args)
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/app/utils.py", line 281, in create_window
    main.setup()
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/app/mainwindow.py", line 875, in setup
    PLUGIN_REGISTRY.register_plugin(self, PluginClass,
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/api/plugin_registration/registry.py", line 274, in register_plugin
    instance = self._instantiate_spyder5_plugin(
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/api/plugin_registration/registry.py", line 152, in _instantiate_spyder5_plugin
    plugin_instance = PluginClass(main_window, configuration=CONF)
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/api/plugins/new_api.py", line 294, in __init__
    self._container = container = self.CONTAINER_CLASS(
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/plugins/tours/container.py", line 48, in __init__
    self._tour_dialog = OpenTourDialog(
  File "/home/fellype/progs_nao_instalaveis/spyder-env/lib64/python3.10/site-packages/spyder/plugins/tours/widgets.py", line 1074, in __init__
    image = image.scaled(image_width, image_height, Qt.KeepAspectRatio,
TypeError: arguments did not match any overloaded call:
  scaled(self, int, int, aspectRatioMode: Qt.AspectRatioMode = Qt.IgnoreAspectRatio, transformMode: Qt.TransformationMode = Qt.FastTransformation): argument 1 has unexpected type 'float'
  scaled(self, QSize, aspectRatioMode: Qt.AspectRatioMode = Qt.IgnoreAspectRatio, transformMode: Qt.TransformationMode = Qt.FastTransformation): argument 1 has unexpected type 'float'

Versions

• Spyder version: 5.1.5 (from pip)
• Python version: 3.10.0 (from OS)
• Qt version: 5.15.3 (from OS)
• PyQt version: 5.12.3 (from pip)
• Operating System name/version: Slackware Linux - current (pre 15.0)

Additional info:
Spyder was working fine with python 3.9.7 in the same environment

[ccordoba12]

Hey @Fellypao, thanks for reporting. We'll try to address this problem in a future release.

[ccordoba12]

In the meantime, please use Python 3.9 instead.

[rear1019]

This is probably a PyQt issue (and not related to Python 3.10). PyQt 5.14.1 issues the following warning when calling QImage.scaled() with float arguments: <stdin>:1: DeprecationWarning: an integer is required (got type float). Implicit conversion to integers using __int__ is deprecated, and may be removed in a future version of Python.

@Fellypao Can you please recheck PyQt and Qt versions?

[ccordoba12]

Thanks for your help @rear1019!

[Fellypao]

@Fellypao Can you please recheck PyQt and Qt versions?

Output from pip list command in the virtual environment I've installed spyder:
PyQt5 5.12.3
PyQt5-sip 12.9.0

Qt version is 5.15.3, the one shipped with Slackware
The version of PyQt5 installed in OS is 5.15.2

[rear1019]

This is a Python 3.10 “issue” after all. The deprecation has been added in Python 3.8 [1] and is enforced in 3.10 [2].

[1] https://bugs.python.org/issue36048
[2] https://bugs.python.org/issue37999