Pyqt5—打开子窗口

　　展示run.py中的代码。

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow
from PyQt5 import QtWidgets
from window1 import Ui_MainWindow
from window2 import Ui_MainWindow2
 
 
class mwindow1(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super(mwindow1, self).__init__()
        self.setupUi(self)
    #     self.pushButton.clicked.connect(self.verify_account)

    # def verify_account(self):
    #     account = self.lineEdit.text()     #读取文本框内容
    #     password = self.lineEdit_2.text()
    #     if (account == "123" and password =="123"):
    #         msg_box = QtWidgets.QMessageBox
    #         msg_box.information(self,"提示","成功登录！")



class mwindow2(QtWidgets.QMainWindow, Ui_MainWindow2):
    def __init__(self):
        super(mwindow2, self).__init__()
        self.setupUi(self)
    
    def initUI(self):  
        pass

    

if __name__ == '__main__':
    app = QApplication(sys.argv)
    a = mwindow1()
    b = mwindow2()
    a.show()
    a.pushButton.clicked.connect(b.show)
    sys.exit(app.exec_())