PyQt5: chapter9-update database table-change user password

Instance

1. Create a template window based on Dialog without Buttons
2. Add five Labels, four LineEdits, and a PushButton component
3. Set the text of the first four labels to Email Address, Old Password, New Password, Re-enter New Password
4. Set the text of the fifth Label to be empty
5. Set the text of PushButton to Change Password
6. 设定Line Edit的objectName为lineEditEmailAddress, lineEditOldPassword, lineEditNewPassword, lineEditRePassword
7. Set the objectName of PushButton to pushButtonChangePassword
8. Set the object Name of the fifth Label to labelResponse
9. Save as demoChangePassword.ui
10. Use pyuic to generate demoChangePassword.py
11. Create callChangePassword.py, the code is as follows

import sqlite3, sys
from PyQt5.QtWidgets import QDialog, QApplication
from sqlite3 import Error
from cookbook_200504.demoSignInForm import *

class MyForm(QDialog):
    def __init__(self):
        super().__init__()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)
        self.ui.pushButtonSearch.clicked.connect(self.SearchRows)
        self.show()
    def SearchRows(self):
        sqlStatement="SELECT EmailAddress, Password FROM Users where EmailAddress like'"+self.ui.lineEditEmailAddress.text()+"'and Password like '"+ self.ui.lineEditPassword.text()+"'"
        try:
            conn = sqlite3.connect("ECommerce.db")
            cur = conn.cursor()
            cur.execute(sqlStatement)
            row = cur.fetchone()
            if row==None:
                self.ui.labelResponse.setText("Sorry, Incorrect email address or password ")
            else:
                self.ui.labelResponse.setText("You are welcome ")
        except Error as e:
            self.ui.labelResponse.setText("Error in accessing row")
        finally:
            conn.close()
if __name__=="__main__":
    app = QApplication(sys.argv)
    w = MyForm()
    w.show()
    sys.exit(app.exec())