Plugin incompatible with QGIS 3.44+ (Qt6) - PyQt5 imports need updating

[Chunnhooo]

The Hotspot Analysis plugin fails to load in QGIS 3.44+ with the error as I shown in Figure below.
ImportError: PyQt5 classes cannot be imported in a QGIS build based on Qt6.

Following the PySAL fix from Stack Exchange, I updated these imports in the plugin files:

• Changed hotspot_analysis.py:
  Updated PySAL imports to use pysal.explore.esda and pysal.lib.weights
• Changed PyQt5 imports to qgis.PyQt
• Changed hotspot_analysis_dialog.py:
  Replaced from PyQt5 import QtCore, QtGui, QtWidgets with from qgis.PyQt import ...
• Changed resources.py
  Replaced from PyQt5 import QtCore with from qgis.PyQt import QtCore
  Result:
  Still getting the same Qt6 compatibility error after restarting QGIS.
  Question:
  Are there other files that need updating, or is there a different approach needed for Qt6 compatibility? Any guidance would be appreciated.

This is my environment: QGIS Version: 3.44.0-Solothurn Plugin Version: 2.0.0 Operating System: Windows 10/11 Python Version: 3.12.11

[393su]

In QGIS 3.44+, the old HotSpot Analysis plugin may throw errors when importing PyQt5. You can try adding the following to the beginning of init.py as a workaround:

import sys
sys.modules['PyQt5'] = sys.modules.get('qgis.PyQt')
sys.modules['PyQt5.QtCore'] = sys.modules.get('qgis.PyQt.QtCore')
sys.modules['PyQt5.QtGui'] = sys.modules.get('qgis.PyQt.QtGui')
sys.modules['PyQt5.QtWidgets'] = sys.modules.get('qgis.PyQt.QtWidgets')

Explanation:
This redirects all PyQt5 imports to the internal qgis.PyQt module.
Before making any modifications, it is recommended to back up the plugin's init.py file in case any issues arise and restoration is needed.

[Chunnhooo]

Thank you for your kind response!
I have followed all the steps you provided above and also followed the installation instructions in the README.md (https://github.com/danioxoli/HotSpotAnalysis_Plugin/blob/qgis3pysal2/README.md), but unfortunately the error still persists.
My environment: (I'm wonder if I install 3.16 version ?)
QGIS Version: 3.44.0-Solothurn
Operating System: Windows
Python Version: 3.12.11

What I've tried:
Installed PySAL 2.0.0 via OSGeo4W Shell as Administrator
Installed the plugin from the QGIS repository (experimental version enabled)
Manually edited the Python files to replace PyQt5 imports with qgis.PyQt
Added module redirection code in init.py
Reinstalled the plugin multiple times

Despite these efforts, the plugin still shows the Qt6 compatibility error and fails to load.
Since I really need this tool for my research, I would greatly appreciate any additional guidance or suggestions you might have. Would it be possible to release an updated version with Qt6 compatibility, or are there any other workarounds I could try?
Thank you for your time and assistance!

[393su]

You can try the following steps:

Step 1: Locate the plugin directory
The path is usually:

C:\Users<username>\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\HotSpotAnalysis_Plugin

Step 2: Edit init.py
At the very beginning of the file (before the first line), add the following lines and save:

--- Qt6 compatibility emergency patch ---

import sys
sys.modules['PyQt5'] = sys.modules['qgis.PyQt']
sys.modules['PyQt5.QtCore'] = sys.modules['qgis.PyQt.QtCore']
sys.modules['PyQt5.QtGui'] = sys.modules['qgis.PyQt.QtGui']
sys.modules['PyQt5.QtWidgets'] = sys.modules['qgis.PyQt.QtWidgets']

Step 3: Edit hotspot_analysis.py
Locate the old PySAL imports, such as:

from pysal.esda import getisord

or

from pysal import esda

Change them to:

from esda import G_Local
from libpysal.weights import KNN

Save the file.

Step 4: Install necessary dependencies
Open the OSGeo4W Shell or the QGIS Python Console and run:

pip uninstall pysal -y
pip install esda libpysal splot

Step 5: Restart QGIS
Restart QGIS, then enable the plugin. It should now load and run the hotspot analysis correctly.

If you still encounter Qt compatibility errors, you can execute the following once in the QGIS Python Console:

import sys
sys.modules['PyQt5'] = sys.modules['qgis.PyQt']
sys.modules['PyQt5.QtCore'] = sys.modules['qgis.PyQt.QtCore']
sys.modules['PyQt5.QtGui'] = sys.modules['qgis.PyQt.QtGui']
sys.modules['PyQt5.QtWidgets'] = sys.modules['qgis.PyQt.QtWidgets']

Then try enabling the plugin again.

Thank you for identifying and reporting this issue. Future updates of the plugin will address Qt6 compatibility, but updates may take time. If urgent, and the above steps do not resolve the problem, you can temporarily use QGIS 3.28 or earlier versions, which can run the existing plugin directly.

[Chunnhooo]

Thank you for your kindly response.