PYQT5实现文件目录浏览

    def setBrowerPath(self):
        download_path = QtWidgets.QFileDialog.getExistingDirectory(self,
                                    "浏览",
                                    "E:\workspace")
        self.lineEdit.setText(download_path)  

点击button “浏览”可以打开对应的文件目录，并将选定的文件目录写入 lineEdit文本框内。