一， 安装模块
1，pyqt5
pip3 install pyqt5
2， pyqt5-tools
pip3 install pyqt5-tools
二， pyqt5designer的位置
安装了pyqt5后就有了：/Users/hz/WorkSpace/Python/Qt/venv/lib/python3.8/site-packages/qt5_applications/Qt/bin/Designer.app
1， 在PyCharm中配置pyqt5designer设计工具
a, PyCharm -> Setting... , 打开Settings窗口
b, Tools ->External Tools , 开始添加工具
c, 在Create Tool弹窗中配置pyqt5designer工具
Program：/Users/hz/WorkSpace/Python/Qt/venv/lib/python3.8/site-packages/qt5_applications/Qt/bin/Designer.app/Contents/MacOS/Designer