Solve the problem that QT5 Designer cannot be opened under python

designer.exe cannot open the background

python 3.8 Follow pip install pyqt5 and pip install pyqt5-tools to complete the installation After that, enter the ..\Python\Lib\site-packages\pyqt5_tools\Qt\bin
directory and open designer.exe. The error is as follows:

Solution

Place the two dll files in the following directory...\Python\Lib\site-packages\pyqt5_tools\Qt\plugins\platforms

Copy to...\Python\Lib\site-packages\pyqt5_tools\Qt\bin\platforms directory, and you can open designer.exe normally

PS: Let’s take a look at the problem that Qt-Designer cannot be opened

After installing Qt, double-clicking the Designer on the desktop does not respond. The solution is to change qwebengineview.dll in the installation path. Add ".bak" to the file suffix.

Related learning recommendations: python tutorial

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