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This article introduces the knowledge of "Python GUI programming how to design a simple login interface". In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

Case study: Designing a user login interface

Tools: Python PyQt5

The program runs as follows:

(1) Initial interface

(2) Enter "username" and "password" and click "login"

(4) Click the "Exit" button to exit the interface.

The design procedure is as follows: # -*- coding: utf-8 -*-from PyQt5 import QtCore, QtGui, QtWidgetsfrom PyQt5.QtGui import QPixmap, QIconfrom PyQt5.QtWidgets import QMessageBoxclass Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(300, 180) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.label = QtWidgets.QLabel(self.centralwidget) self.label.setGeometry(QtCore.QRect(60, 30, 51, 16)) self.label.setObjectName("label") self.label_2 = QtWidgets.QLabel(self.centralwidget) self.label_2.setGeometry(QtCore.QRect(60, 60, 51, 16)) self.label_2.setObjectName("label_2") self.lineEdit = QtWidgets.QLineEdit(self.centralwidget) self.lineEdit.setGeometry(QtCore.QRect(120, 30, 113, 20)) self.lineEdit.setObjectName("lineEdit") self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget) self.lineEdit_2.setGeometry(QtCore.QRect(120, 60, 113, 20)) self.lineEdit_2.setObjectName("lineEdit_2") self.lineEdit_2.setEchoMode(QtWidgets.QLineEdit.Password) #Set text box to password self.lineEdit_2.setValidator(QtGui.QIntValidator(100000,999999)) #Set to enter only 8 digits self.pushButton = QtWidgets.QPushButton(self.centralwidget) self.pushButton.setGeometry(QtCore.QRect(70, 120, 61, 27)) self.pushButton.setObjectName("pushButton") self.pushButton.setIcon(QIcon(QPixmap("login.ico"))) #Set icon for Login button self.label = QtWidgets.QLabel(self.centralwidget) self.label.setGeometry(QtCore.QRect(60, 30, 51, 16)) self.label.setObjectName("label") self.label_2 = QtWidgets.QLabel(self.centralwidget) self.label_2.setGeometry(QtCore.QRect(60, 60, 51, 16)) self.label_2.setObjectName("label_2") self.radioButton = QtWidgets.QRadioButton(self.centralwidget) self.radioButton.setGeometry(QtCore.QRect(70, 90, 71, 18)) self.radioButton.setObjectName("radioButton") self.radioButton.setChecked(True) #Set "Administrator radio button selected by default self.radioButton_2 = QtWidgets.QRadioButton(self.centralwidget) self.radioButton_2.setGeometry(QtCore.QRect(150, 90, 81, 18)) self.radioButton_2.setObjectName("radioButton_2") self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget) self.pushButton_2.setGeometry(QtCore.QRect(160, 120, 61, 27)) self.pushButton_2.setObjectName("pushButton_2") self.pushButton_2.setIcon(QIcon(QPixmap("exit.ico"))) #Set icon for Exit button MainWindow.setCentralWidget(self.centralwidget) self.retranslateUi(MainWindow) self.pushButton.clicked.connect(self.login) #Clicked signal binding custom slot function for login button self.pushButton_2.clicked.connect(MainWindow.close) #The clicked signal for the "exit" button binds the close() slot function that comes with the MainWindow window self.radioButton.toggled.connect(self.select) #toggled signal binding custom slot function for radio buttons self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 317, 26)) self.menubar.setObjectName("menubar") MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar) QtCore.QMetaObject.connectSlotsByName(MainWindow) def login(self): from PyQt5.QtWidgets import QMessageBox #Use the information() method to pop up an information prompt box QMessageBox.information(MainWindow, "Login Info, ""Username: " + self.lineEdit.text() + "Password:" + self.lineEdit_2.text(), QMessageBox.Ok) #Custom slot function to determine user login identity def select(self): if self.radioButton.isChecked(): #Determine whether to log in as an administrator QMessageBox.information(MainWindow, "Prompt, ""You selected Admin Login," QMessageBox.Ok) elif self.radioButton_2.isChecked(): #Determine if you are logged in as an ordinary user QMessageBox.information(MainWindow, "Prompt, ""You selected normal user login," QMessageBox.Ok) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "System Login")) self.label.setText(_translate("MainWindow", "username: ")) self.label_2.setText(_translate("MainWindow", "Password: ")) self.pushButton.setText(_translate("MainWindow", "Login")) self.pushButton_2.setText(_translate("MainWindow", "Exit")) self.radioButton.setText(_translate("MainWindow", "Administrator")) self.radioButton_2.setText(_translate("MainWindow", "Normal User"))import sysif __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) MainWindow = QtWidgets.QMainWindow() ui = Ui_MainWindow() ui.setupUi(MainWindow) MainWindow.show() sys.exit(app.exec_())"Python GUI programming how to design a simple login interface" content is introduced here, thank you for reading. If you want to know more about industry-related knowledge, you can pay attention to the website. Xiaobian will output more high-quality practical articles for everyone!

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