pyqt5: QSettings demo

pyqt-qsettings.py

#! /usr/bin/python3

from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import QCoreApplication, QSettings

class Window(QMainWindow):
    def __init__(self):
        super(Window, self).__init__()
        settings = QSettings()
        self.list = settings.value('list', ['a', 'b', 'c'])
        self.dict = settings.value('dict', {'key': 0})
        self.str = settings.value('string', 'str')
        self.int = settings.value('interger', 0, int)

        print("list: ", self.list)
        print("dict: ", self.dict)
        print("string:", self.str)
        print("interger:", self.int)

        # Change value for testings
        self.list.append(len(self.list))
        self.str = self.str + str(len(self.list))
        self.int = self.int + 1
        self.dict[self.str] = self.int

    def closeEvent(self, event):
        settings = QSettings()
        settings.setValue('list', self.list)
        settings.setValue('dict', self.dict)
        settings.setValue('string', self.str)
        settings.setValue('interger', self.int)


if __name__ == '__main__':
    QCoreApplication.setOrganizationName('org_name')
    QCoreApplication.setOrganizationDomain('org_domain')
    QCoreApplication.setApplicationName('app_name')

    import sys
    app = QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec_())