python - 当我从另一个 QMainWindow 传递参数后要求另一个 QMainWindow 出现时，它没有出现？

Question

这是我在从我的数据库获取到 ProfW 后尝试传递 Id 的登录类，它正确传递，但是当我调用 ProfW.show() 时窗口没有出现。

class Login(QMainWindow):
    def __init__(self):
        super(Login, self).__init__()
        self.setFixedWidth(1030)
        self.setFixedHeight(590)
        loadUi("loginW.ui", self)
        self.back.setStyleSheet("background-image : url(MainBack.png)")
        self.back.resize(1060, 625)
        self.LoginButton.clicked.connect(self.loginfunction)
        self.ReButton.clicked.connect(self.Register)

    def loginfunction(self):
        if db_connection.is_connected() == False:
            db_connection.connect()

        db_cursor.execute("CREATE DATABASE IF NOT EXISTS User")
        db_cursor.execute("use User")
        db_cursor.execute(
            "Create table if not exists USER(Id VARCHAR(30) NOT NULL  PRIMARY KEY,password VARCHAR(30),fname VARCHAR(30),lname VARCHAR(30),Email VARCHAR(30))")
        db_connection.commit()

        # Get Login Info
        email = self.email.text()
        Password1 = self.Password.text()

        # Check if user exist
        query = "SELECT Id FROM User WHERE Email ='%s' AND password ='%s'" % (email, Password1)
        db_cursor.execute(query)

        try:
            db_cursor.execute(query)
            info = db_cursor.fetchall()
            result = db_cursor.rowcount
            if result == 1:
                res = any(chr.isdigit() for chr in email)
                if res:
                    StuW.show()
                else:
                    Profw = Professor.ProfessorI(info[0][0])
                    Profw.show()
            else:
                msgf = QMessageBox()
                msgf.setIcon(QMessageBox.Warning)
                msgf.setText("Incorrect email or password ")
                msgf.setInformativeText("Please try again.")
                msgf.setWindowTitle("Warning!")
                retval = msgf.exec_()
        except mc.Error as e:
            msgf = QMessageBox()
            msgf.setIcon(QMessageBox.Warning)
            msgf.setText("Something wrong happened!")
            msgf.setInformativeText("Please try login again.")
            msgf.setWindowTitle("Warning!")
            retval = msgf.exec_()

这是我的教授窗口的代码，我想要一个隐藏的单选按钮显示教授课程编号，每个用户都不同。教授 QMainWindow 栏出现和消失的速度非常快，并且什么也没有出现。

class ProfessorI(QMainWindow):
    def __init__(self,id):
        self.id=id
        super(ProfessorI, self).__init__()
        self.setFixedWidth(1030)
        self.setFixedHeight(590)
        loadUi("ProfW.ui", self)
        self.back.setStyleSheet("background-image : url(PSBackground.png)")
        # self.back.resize(1060, 625)
        # self.WL = 'Hello Professor'+' Welcome to MiniProctor'
        self.SetWindow = SettingI()

        self.radioButton1.setHidden(True)
        self.radioButton2.setHidden(True)
        self.radioButton3.setHidden(True)
        self.radioButton4.setHidden(True)
        self.radioButton5.setHidden(True)
        self.SettingButton.clicked.connect(self.ShowSW)
        self.LogoutButton.clicked.connect(self.LogoutW)
        self.GetCourse()


    def ShowSW(self):
        # TODO: Check box for enable Face and voice recognition
        # SetWindow.show()
        self.SetWindow.show()

    def LogoutW(self):
        # TODO: Save info and logout
        # Profw.hide()
        print('LOGOUT')

    # Fetch Professor Course
    def GetCourse(self):
        if db_connection.is_connected() == False:
            db_connection.connect()
        db_cursor.execute("use User")
        db_cursor.execute(
            "Create table if not exists Course(CourseId INT(30) NOT NULL  PRIMARY KEY, Name VARCHAR(30), FOREIGN KEY(DrId) REFERENCES USER(Id),FOREIGN KEY(StID) REFERENCES USER(Id))")
        db_connection.commit()
        query = "SELECT Name FROM Course WHERE DrId ='%s'" % self.id
        db_cursor.execute(query)
        # # display all records
        # table = db_cursor.fetchall()
        result = db_cursor.rowcount
        # id= MiniLogin.Login.getid(self)
        # Id = table[1]
        if result == 1:
            result = db_cursor.rowcount
            for x in range(1, result, 1):
                n = "radioButton" + x
                self.RadioButton = self.findChild(self.QRadioButton, n)
                self.RadioButton.setHidden(False)
        try:
            db_cursor.execute(query)
            # display all records
            table = db_cursor.fetchall()
            result = db_cursor.rowcount
            #Id = table[0]
            if result == 1:
                result = db_cursor.rowcount
                for x in range(1, result, 1):
                    n = "radioButton" + x
                    self.RadioButton = self.findChild(self.QRadioButton, n)
                    self.RadioButton.setHidden(False)

        except mc.Error as e:
            msgf = QMessageBox()
            msgf.setIcon(QMessageBox.Warning)
            msgf.setText("Something wrong happened!")
            msgf.setInformativeText("Please try login again.")
            msgf.setWindowTitle("Warning!")
            retval = msgf.exec_()

标签： pythonpyqt5qmainwindow