cmd中：
pip3 install PyQt5
pip3 install PyQt5-tools
After the installation is complete, open pycharm to configure :
"File"-"Setting"-"Tools"-"External tools"
-add the plus sign in the upper left corner Name: QtDesigner
Program: Find designer.exe
Working directory: where the project is located in the installation directory just now table of Contents
After the configuration is complete, right-click your project:
QtDesigner will come out:
