after I upgrade to pyqt5-stubs version 5.15.2.0, the XXX.clickked.XXX 's autocompletion in pycharm(2021.1) didn"t work.But in Vscode(with pylance) it works well.Then i downgrade to pyqt5-stubds version 5.14.2.2 ,the XXX.clickked.XXX 's autocompletion in pycharm(2021.1) starts working.