sudo apt-get install pyqt5-dev-tools /usr/bin/pip3 --default-timeout 100 install -i https://pypi.tuna.tsinghua.edu.cn/simple install pyqt5==5.14.1 sudo /usr/bin/pip3 show pyqt5-sip
sudo apt-get install pyqt5-dev-tools /usr/bin/pip3 --default-timeout 100 install -i https://pypi.tuna.tsinghua.edu.cn/simple install pyqt5==5.14.1 sudo /usr/bin/pip3 show pyqt5-sip