pyqt5 login

以下是一个简单的PyQt5登录界面的例子，其中用户名和密码存储在ini文件中：

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QMessageBox
from PyQt5.QtGui import QIcon
from configparser import ConfigParser

class Login(QWidget):
    def __init__(self):
        super().__init__()
        self.title = 'Login'
        self.left = 10
        self.top = 10
        self.width = 400
        self.height = 140
        self.initUI()

    def initUI(self):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)
        self.setWindowIcon(QIcon('icon.png'))

        self.label_username = QLabel('Username:', self)
        self.label_username.move(20, 20)
        self.textbox_username = QLineEdit(self)
        self.textbox_username.move(100, 20)
        self.textbox_username.resize(280, 20)

        self.label_password = QLabel('Password:', self)
        self.label_password.move(20, 50)
        self.textbox_password = QLineEdit(self)
        self.textbox_password.setEchoMode(QLineEdit.Password)
        self.textbox_password.move(100, 50)
        self.textbox_password.resize(280, 20)

        self.button_login = QPushButton('Login', self)
        self.button_login.move(20, 90)
        self.button_login.clicked.connect(self.login)

        self.button_cancel = QPushButton('Cancel', self)
        self.button_cancel.move(300, 90)
        self.button_cancel.clicked.connect(self.close)

        self.show()

    def login(self):
        username = self.textbox_username.text()
        password = self.textbox_password.text()

        config = ConfigParser()
        config.read('users.ini')
        if username in config.sections():
            if password == config[username]['password']:
                QMessageBox.information(self, 'Login', 'Login successful!')
                self.close()
                # 在这里添加跳转到其他界面的代码
            else:
                QMessageBox.warning(self, 'Login', 'Incorrect password!')
        else:
            QMessageBox.warning(self, 'Login', 'User not found!')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    login = Login()
    sys.exit(app.exec_())