python - pyqt5 中的 Pickle.load

Question

我在使用 pickle 加载序列化数据的 MainWindow 时遇到问题。
只是一个简单的主窗口

class MainWindow(QtWidgets.QMainWindow, UI.MainUI.Ui_MainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.setupUi(self)
        self.action_save.triggered.connect(self.save)
        self.action_load.triggered.connect(self.load)

    def save(self):
        with open("Save", "wb") as f:
        pickle.dump(self.test, f)

    def load(self):
        with open("Save", "rb") as f:
        self.test = pickle.load(f)

    def go(self):
        self.test = Test(14)

class Test():
    def __init__(self, a):
        self.a = a

即使我确实调用了 MainWindow 的 super，但由于发生运行时错误，我无法进行保存：

self.test = pickle.load(f)
RuntimeError: super-class __init__() of type MainWindow was never called