PyQt: “AttributeError: 'Form' object has no attribute 'exec_'” when opening second window

# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QApplication , QMainWindow
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from Ui_splashView import *
from LoginMain import LoginMain

class SplashMain(QMainWindow, Ui_Form):
    def __init__(self, parent=None):
        super(SplashMain, self).__init__(parent)
        self.setWindowFlags(Qt.SplashScreen|Qt.FramelessWindowHint)
        self.setupUi(self)

        self.time=5
        self.timer=QTimer(self)
        self.timer.timeout.connect(self.countTime)
        self.timer.start(1000)

    def countTime(self):
        self.time-=1
        self.label_2.setText("还有"+str(self.time)+"秒跳转登入界面")
        if(self.time==0):
            self.close()
            self.myWin2 = LoginMain()
            self.myWin2.show()  

if __name__=="__main__":
    app = QApplication(sys.argv)
    myWin = SplashMain()
    myWin.show()
    sys.exit(app.exec_())  

以上代码是 splash窗口负责欢迎提示的，然后关闭自身窗口打开一个新的窗口。

以上红色部分的代码是修正以后的，之前的代码为：

            myWin2 = LoginMain()
            myWin2.show()
            myWin2.exec_()  

如果这么写的话就会报错，如下：

PyQt: “AttributeError: 'Form' object has no attribute 'exec_'” when opening second window

在  网址：

https://blog.csdn.net/qq_32856147/article/details/79646163

找到了一些解答。

照此修正，不再报错。