[开发工具]pyqt中QSettings保存上次设置信息

需求：在pyqt5中打开一个界面，在lineEdit中输入账号密码，下次打开软件的时候出现上次输入的账号密码

首先使用设计师绘制界面

在界面中输入账号密码，点击按钮

下次打开界面时会出现上次输入的账号密码

代码如下（不能直接运行）?

import os
from PyQt5 import QtWidgets
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from curveChooserUI import Ui_MainWindow

class CurveChooseGUI(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(CurveChooseGUI, self).__init__(parent)
        self.setupUi(self)
        self.init_login_info()
        self.pushButton.clicked.connect(self.on_pushButton_clicked)##点击按钮进行保存

    def on_pushButton_clicked(self):
        self.save_login_info()

##保存lineEdit中内容
    def save_login_info(self):
        settings = QSettings("config.ini", QSettings.IniFormat)
        settings.setValue("account",self.lineEdit.text())
        settings.setValue("password", self.lineEdit_2.text())
##显示上次保存的值
    def init_login_info(self):
        settings = QSettings("config.ini", QSettings.IniFormat)
        the_account = settings.value("account")
        the_password = settings.value("password")

        self.lineEdit.setText(the_account)
        self.lineEdit_2.setText(the_password)

if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    loadedFontID = QFontDatabase.addApplicationFont(
        os.path.join(os.path.dirname(os.path.abspath(__file__)), "Resource", "Font", "wqy-microhei.ttc"))
    # font_dirs = [os.path.join("Resource", "Font", )]
    # font_files = font_manager.findSystemFonts(fontpaths=font_dirs)
    # font_list = font_manager.createFontList(font_files)
    # font_manager.fontManager.ttflist.extend(font_list)
    gui = CurveChooseGUI()
    app.setStyleSheet(
        '''
        QWidget
        {
            font: 12pt "文泉驿微米黑";
        }
        QComboBox QAbstractItemView
        {
           min-height: 30px;
        }
        ''')
    gui.show()
    sys.exit(app.exec_())