Установка QtDesigner в Linux
sudo apt-get install qttools5-dev-tools sudo apt-get install qttools5-dev sudo apt-get install pyqt5-dev-tools
python pyqt5 linux section pythonpython:pyqt5:ustanovka_qtdesigner_v_linux
sudo apt-get install qttools5-dev-tools sudo apt-get install qttools5-dev sudo apt-get install pyqt5-dev-tools