pyqt5制作登录窗口的详细过程

import sys
import os
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox
from time import sleep
from selenium import webdriver
import pyautogui
class Ui_MainWindow(object):


    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.setEnabled(True)
        MainWindow.resize(469, 262)
        MainWindow.setWindowTitle("摄像头")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(100, 40, 71, 51))
        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(22)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.label_2 = QtWidgets.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(70, 110, 101, 51))
        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(22)
        self.label_2.setFont(font)
        self.label_2.setObjectName("label_2")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(250, 180, 111, 41))
        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(20)
        self.pushButton.setFont(font)
        self.pushButton.setIconSize(QtCore.QSize(20, 20))
        self.pushButton.setObjectName("pushButton")
        self.pushButton.clicked.connect(self.login)
        self.comboBox = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox.setGeometry(QtCore.QRect(180, 50, 191, 31))
        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(20)
        self.comboBox.setFont(font)
        self.comboBox.setObjectName("comboBox")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(180, 110, 131, 41))
        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(22)
        self.lineEdit.setFont(font)
        self.lineEdit.setObjectName("lineEdit")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(80, 180, 101, 41))
        self.pushButton_2.clicked.connect(self.send)

        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(20)
        self.pushButton_2.setFont(font)
        self.pushButton_2.setObjectName("pushButton_2")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)


        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "账号:"))
        self.label_2.setText(_translate("MainWindow", "验证码:"))
        self.pushButton.setText(_translate("MainWindow", "登录"))
        self.comboBox.setItemText(0, _translate("MainWindow", "1111"))
        self.comboBox.setItemText(1, _translate("MainWindow", "2222"))
        self.comboBox.setItemText(2, _translate("MainWindow", "3333"))
        self.pushButton_2.setText(_translate("MainWindow", "获取"))

    def send(self):

        user = self.comboBox.currentText()
        self.pushButton_2.setText("发送中")
        QMessageBox.information(MainWindow, user, "发送成功", QMessageBox.Ok)

    def login(self):      

app = QApplication(sys.argv)
MainWindow = QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())