本文共 41016 字，大约阅读时间需要 136 分钟。

总结

程序设计方法学，最后要求做一个咖啡点餐系统。之前学过QT，又临时突击了几天PyQt借鉴网上的代码，没有用到数据库之类麻烦的东西，只是几个界面的交互。代码比较简单。

实现了以下功能：

1. 基本餐品、套餐、活动三个界面的餐品的的选择
2. 主界面订单的显示、删除某一样餐品、减少某一样餐品的购买量
3. 订单的结算
4. 打印小票
5. 储值卡和优惠卷的使用

共包括以下文件：

程序界面

主界面：

基本餐界面：

套餐界面：

活动界面：

点餐完成后，可以回到主界面进行餐品的删除或减少(马上交作业，时间有限，减少只写了基本餐的减少)

活动界面如果不在活动内会弹出消息盒子提示：

页面布局控件

完整代码

luckin.py

# 作者：KaiSarH# 日期：2019/11/4from luckinmain import *from normal import *from setmeal import *from activity import *import sysfrom PyQt5.QtWidgets import *from PyQt5.QtGui import QPixmapclass Luckin_Main(QMainWindow):    def __init__(self):        # 界面初始化        QMainWindow.__init__(self)        self.main_ui = Ui_MainWindow()        self.main_ui.setupUi(self)        # 给按钮绑定方法        btn_del = self.main_ui.pushButton_5        btn_del.clicked.connect(self.order_del)        btn_delone = self.main_ui.pushButton_8        btn_delone.clicked.connect(self.order_decline)        btn_num = self.main_ui.pushButton_6        btn_num.clicked.connect(self.order_num)        self.btn_tip = self.main_ui.pushButton_7        self.btn_tip.clicked.connect(self.order_tip)        # 设置按钮为当前不可用        self.btn_tip.setEnabled(False)        # 定义列表        self.num = []        self.new_num = []    # 主界面显示    def person(self):        # 主界面贴图        self.main_ui.label_8.setPixmap(QPixmap('./Picture/主界面.png'))        # 将图片完全填充        self.main_ui.label_8.setScaledContents(True)        # 初始化储值卡余额        self.balance = 500        # 初始化优惠券数量        self.coupons = 1        # 显示余额和券数量        self.main_ui.label_2.setText(str(self.balance))        self.main_ui.label_5.setText(str(self.coupons))        # 显示主界面        luckinmain.show()    # 删除操作——直接删除一行    def order_del(self):        # 获取所选行索引        row_index = luckinmain.main_ui.tableWidget.currentRow()        if row_index != -1:            # 删除            luckinmain.main_ui.tableWidget.removeRow(row_index)    # 删除操作——删除某一种商品一份    def order_decline(self):        self.price_Cappuccino = 18.5        self.price_Latte = 11.0        self.price_Mocha = 13.0        self.price_Americano = 13.5        self.price_Macchiato = 10.0        # 获取当前所选的行        current_row = luckinmain.main_ui.tableWidget.currentRow()        # 将字符串转换为整型        num = luckinmain.main_ui.tableWidget.item(current_row, 1).text()        num = eval(num.replace(num[0], ''))        # 判断是否大于1        if num == 1:            # 等于1的话直接删除            luckinmain.main_ui.tableWidget.removeRow(current_row)        else:            # 大于1则进行判断 修改数量和价格            num -= 1            kind = luckinmain.main_ui.tableWidget.item(current_row, 0).text()            luckinmain.main_ui.tableWidget.setItem(current_row, 1, QTableWidgetItem("×" + str(num)))            if kind == '卡布奇诺':                luckinmain.main_ui.tableWidget.setItem(current_row, 2,                                                       QTableWidgetItem(str(self.price_Cappuccino * num)))            elif kind == '拿铁':                luckinmain.main_ui.tableWidget.setItem(current_row, 2,                                                       QTableWidgetItem(str(self.price_Latte * num)))            elif kind == '摩卡':                luckinmain.main_ui.tableWidget.setItem(current_row, 2,                                                       QTableWidgetItem(str(self.price_Mocha * num)))            elif kind == '标准美式':                luckinmain.main_ui.tableWidget.setItem(current_row, 2,                                                       QTableWidgetItem(str(self.price_Americano * num)))            elif kind == '焦糖玛奇朵':                luckinmain.main_ui.tableWidget.setItem(current_row, 2,                                                       QTableWidgetItem(str(self.price_Macchiato * num)))    # 结算    def order_num(self):        # 设置打印小票按钮为可用        self.btn_tip.setEnabled(True)        # 遍历所有行        for row_index in range(luckinmain.main_ui.tableWidget.rowCount()):            # 将每一行的第三项值(数量)添加到num列表里            self.num.append(luckinmain.main_ui.tableWidget.item(row_index, 2).text())        # 将num中的字符转换成int型        self.new_num = eval('[' + (','.join(self.num)) + ']')        # 将new_num列表值求和为需要支付的所有钱数        self.money = sum(self.new_num)        # 有优惠券时        if self.coupons >= 1:            # 消息提示框            button = QMessageBox.information(self, "温馨提示", "是否使用优惠券", QMessageBox.Yes | QMessageBox.No)            # 使用优惠券            if button == QMessageBox.Yes:                # 当前优惠券数量减一                self.coupons = self.coupons -1                self.main_ui.label_5.setText(str(self.coupons))                # 余额足够 一张优惠卷为20元                if self.balance >= (self.money - self.coupons * 20):                    QMessageBox.information(self, "恭喜您", "付款成功！", QMessageBox.Yes)                    self.balance = self.balance - self.money + self.coupons * 20                    self.main_ui.label_2.setText(str(self.balance))                else:                    QMessageBox.information(self, "对不起", "您的储值卡余额不足！", QMessageBox.Yes)            # 不使用优惠券            else:                if self.balance >= self.money:                    QMessageBox.information(self, "恭喜您", "付款成功！", QMessageBox.Yes)                    self.balance = self.balance - self.money                    self.main_ui.label_2.setText(str(self.balance))                else:                    QMessageBox.information(self, "对不起", "您的储值卡余额不足！", QMessageBox.Yes)        # 没有优惠券时        else:            if self.balance >= self.money:                QMessageBox.information(self, "恭喜您", "付款成功！", QMessageBox.Yes)                self.balance = self.balance - self.money                self.main_ui.label_2.setText(str(self.balance))            else:                QMessageBox.information(self, "对不起", "您的储值卡余额不足！", QMessageBox.Yes)    # 打印小票    def order_tip(self):        # 打开本地txt文件        with open("luckinbill.txt", "w") as f:            # 遍历行            for row_index in range(luckinmain.main_ui.tableWidget.rowCount()):                # 遍历列                for column_index in range(luckinmain.main_ui.tableWidget.columnCount()):                    # 将tableWidget数据写入文件                    f.write(luckinmain.main_ui.tableWidget.item(row_index, column_index).text() + "\n")            f.write("合计：" + str(self.money) + "元")        f.close()class Normal(QWidget):    def __init__(self):        QWidget.__init__(self)        self.normal_ui = Ui_Normal()        self.normal_ui.setupUi(self)        # 初始化各基本餐加入订单按钮点击次数        self.bt1 = 0        self.bt2 = 0        self.bt3 = 0        self.bt4 = 0        self.bt6 = 0        # 初始化返回按钮点击次数        self.bt5 = 0        # 按钮绑定方法        btn_Cappuccino = self.normal_ui.pushButton        btn_Cappuccino.clicked.connect(self.order_Cappuccino)        btn_Latte = self.normal_ui.pushButton_2        btn_Latte.clicked.connect(self.order_Latte)        btn_Mocha = self.normal_ui.pushButton_3        btn_Mocha.clicked.connect(self.order_Mocha)        btn_Americano = self.normal_ui.pushButton_4        btn_Americano.clicked.connect(self.order_Americano)        btn_ice = self.normal_ui.pushButton_5        btn_ice.clicked.connect(self.order_ice)        btn_return = self.normal_ui.pushButton_6        btn_return.clicked.connect(self.nor_show)    # 显示基本餐界面    def nor_order(self):        # 绘图,设置背景,并把图片铺满容器        self.normal_ui.label_3.setPixmap(QPixmap('./picture/卡布奇诺.png'))        self.normal_ui.label_3.setScaledContents(True)        self.normal_ui.label_6.setPixmap(QPixmap('./picture/拿铁.png'))        self.normal_ui.label_6.setScaledContents(True)        self.normal_ui.label_9.setPixmap(QPixmap('./picture/摩卡.png'))        self.normal_ui.label_9.setScaledContents(True)        self.normal_ui.label_12.setPixmap(QPixmap('./picture/标准美式.png'))        self.normal_ui.label_12.setScaledContents(True)        self.normal_ui.label_15.setPixmap(QPixmap('./picture/焦糖玛奇朵.png'))        self.normal_ui.label_15.setScaledContents(True)        # 基本餐价格        self.price_Cappuccino = 18.5        self.price_Latte = 11.0        self.price_Mocha = 13.0        self.price_Americano = 13.5        self.price_Macchiato = 10.0        # 显示价格        self.normal_ui.label.setText(str(self.price_Cappuccino)+"元/份")        self.normal_ui.label_4.setText(str(self.price_Latte)+"元/份")        self.normal_ui.label_7.setText(str(self.price_Mocha)+"元/份")        self.normal_ui.label_10.setText(str(self.price_Americano)+"元/份")        self.normal_ui.label_13.setText(str(self.price_Macchiato)+"元/份")        # 显示界面        normal.show()    # 计算不同餐品点击次数    def order_Cappuccino(self):        self.bt1 += 1    def order_Latte(self):        self.bt2 += 1    def order_Mocha(self):        self.bt3 += 1    def order_Americano(self):        self.bt4 += 1    def order_ice(self):        self.bt5 += 1    def nor_show(self):        self.bt6 += 1        # 隐藏界面        normal.hide()        # 获取所选各基本餐的数量对应的价格        self.num_Cappuccino = self.price_Cappuccino * self.bt1        self.num_Latte = self.price_Latte * self.bt2        self.num_Mocha = self.price_Mocha * self.bt3        self.num_Americano = self.price_Americano * self.bt4        self.num_Macchiato = self.price_Macchiato * self.bt6        # 不是第一次进入该界面        if self.bt6 > 1:            for row_index in range(luckinmain.main_ui.tableWidget.rowCount()):                # 获取tableWidget的所有名称，并放入name列表                name.append(luckinmain.main_ui.tableWidget.item(row_index, 0).text())            if '卡布奇诺' in name:                # 重新设置该行的数量和价格                luckinmain.main_ui.tableWidget.setItem(name.index('卡布奇诺'), 1, QTableWidgetItem("×" + str(self.bt1)))                luckinmain.main_ui.tableWidget.setItem(name.index('卡布奇诺'), 2, QTableWidgetItem(str(self.num_Cappuccino)))            if '卡布奇诺' not in name:                # 已选择                if self.bt1 != 0:                    # 添加一行数据                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_2.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt1)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Cappuccino)))            if '拿铁' in name:                luckinmain.main_ui.tableWidget.setItem(name.index('拿铁'), 1, QTableWidgetItem("×" + str(self.bt2)))                luckinmain.main_ui.tableWidget.setItem(name.index('拿铁'), 2, QTableWidgetItem(str(self.num_Latte)))            if '拿铁' not in name:                if self.bt2 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_5.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt2)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Latte)))            if '摩卡' in name:                luckinmain.main_ui.tableWidget.setItem(name.index('摩卡'), 1, QTableWidgetItem("×" + str(self.bt3)))                luckinmain.main_ui.tableWidget.setItem(name.index('摩卡'), 2, QTableWidgetItem(str(self.num_Mocha)))            if '摩卡' not in name:                if self.bt3 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_8.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt3)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Mocha)))            if '标准美式'in name:                luckinmain.main_ui.tableWidget.setItem(name.index('标准美式'), 1, QTableWidgetItem("×" + str(self.bt4)))                luckinmain.main_ui.tableWidget.setItem(name.index('标准美式'), 2, QTableWidgetItem(str(self.num_Americano)))            if '标准美式' not in name:                if self.bt4 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_11.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt4)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Americano)))            if '焦糖玛奇朵' in name:                luckinmain.main_ui.tableWidget.setItem(name.index('焦糖玛奇朵'), 1, QTableWidgetItem("×" + str(self.bt6)))                luckinmain.main_ui.tableWidget.setItem(name.index('焦糖玛奇朵'), 2, QTableWidgetItem(str(self.num_Macchiato)))            if '焦糖玛奇朵' not in name:                if self.bt5 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_14.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt6)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Macchiato)))        # 第一次进入该界面        else:            if self.bt1 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_2.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt1)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Cappuccino)))            if self.bt2 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_5.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt2)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Latte)))            if self.bt3 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_8.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt3)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Mocha)))            if self.bt4 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_11.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt4)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Americano)))            if self.bt5 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(normal.normal_ui.label_14.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt6)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_Macchiato)))class Package(QWidget):    def __init__(self):        QWidget.__init__(self)        self.package_ui = Ui_Setmeal()        self.package_ui.setupUi(self)        # 初始化各套餐加入订单按钮点击次数        self.bt1 = 0        self.bt2 = 0        # 初始化返回按钮点击次数        self.bt3 = 0        # 按钮绑定方法        btn_pack1 = self.package_ui.pushButton        btn_pack1.clicked.connect(self.order_pack1)        btn_pack2 = self.package_ui.pushButton_2        btn_pack2.clicked.connect(self.order_pack2)        btn_return = self.package_ui.pushButton_3        btn_return.clicked.connect(self.pac_show)    # 显示套餐界面    def pac_order(self):        self.package_ui.label_5.setPixmap(QPixmap('./picture/套餐2.png'))        self.package_ui.label_5.setScaledContents(True)        self.package_ui.label_6.setPixmap(QPixmap('./picture/套餐1.png'))        self.package_ui.label_6.setScaledContents(True)        # 套餐价格        self.price_pack1 = 89.0        self.price_pack2 = 67.0        self.package_ui.label.setText(str(self.price_pack1)+"元/份")        self.package_ui.label_2.setText(str(self.price_pack2)+"元/份")        package.show()    def order_pack1(self):        self.bt1 += 1    def order_pack2(self):        self.bt2 += 1    def pac_show(self):        self.bt3 += 1        package.hide()        self.num_pack1 = self.price_pack1 * self.bt1        self.num_pack2 = self.price_pack2 * self.bt2        if self.bt3 > 1:            for row_index in range(luckinmain.main_ui.tableWidget.rowCount()):                name.append(luckinmain.main_ui.tableWidget.item(row_index, 0).text())            if '咖啡香茶外送套餐' in name:                luckinmain.main_ui.tableWidget.setItem(name.index('咖啡香茶外送套餐'), 1, QTableWidgetItem("×" + str(self.bt1)))                luckinmain.main_ui.tableWidget.setItem(name.index('咖啡香茶外送套餐'), 2, QTableWidgetItem(str(self.num_pack1)))            if '咖啡香茶外送套餐' not in name:                if self.bt1 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(package.package_ui.label_3.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt1)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_pack1)))            if '咖啡冰淇淋套餐' in name:                luckinmain.main_ui.tableWidget.setItem(name.index('咖啡冰淇淋套餐'), 1, QTableWidgetItem("×" + str(self.bt2)))                luckinmain.main_ui.tableWidget.setItem(name.index('咖啡冰淇淋套餐'), 2, QTableWidgetItem(str(self.num_pack2)))            if '咖啡冰淇淋套餐' not in name:                if self.bt2 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(package.package_ui.label_4.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt2)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_pack2)))        else:            if self.bt1 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(package.package_ui.label_3.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt1)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_pack1)))            if self.bt2 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(package.package_ui.label_4.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt2)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_pack2)))class Activity(QWidget):    def __init__(self):        QWidget.__init__(self)        self.activity_ui = Ui_Activity()        self.activity_ui.setupUi(self)        # 初始化各活动加入订单按钮点击次数        self.bt1 = 0        # 初始化返回按钮点击次数        self.bt3 = 0        # 绑定方法        btn_act1 = self.activity_ui.pushButton        btn_act1.clicked.connect(self.order_act1)        btn_act2 = self.activity_ui.pushButton_2        btn_act2.clicked.connect(self.order_act2)        btn_return = self.activity_ui.pushButton_3        btn_return.clicked.connect(self.act_show)    def act_order(self):        self.activity_ui.label_4.setPixmap(QPixmap('./picture/活动1.png'))        self.activity_ui.label_4.setScaledContents(True)        self.activity_ui.label_8.setPixmap(QPixmap('./picture/活动2.png'))        self.activity_ui.label_8.setScaledContents(True)        # 活动价格        self.price_act1 = 29.0        self.price_act2 = 69.0        self.activity_ui.label.setText(str(self.price_act1) + "元/份  原价:"+str(self.price_act1 + 7) + "元/份")        self.activity_ui.label_5.setText(str(self.price_act2) + "元/份  原价:"+str(self.price_act2 + 10) + "元/份")        activity.show()    def order_act1(self):        self.bt1 += 1    def order_act2(self):        QMessageBox.information(self, "对不起", "活动还没有开始，敬请期待！", QMessageBox.Yes)    def act_show(self):        self.bt3 += 1        activity.hide()        self.num_act1 = self.price_act1 * self.bt1        if self.bt3 > 1:            for row_index in range(luckinmain.main_ui.tableWidget.rowCount()):                name.append(luckinmain.main_ui.tableWidget.item(row_index, 0).text())            if '草莓芝士茶' in name:                luckinmain.main_ui.tableWidget.setItem(name.index('草莓芝士茶'), 1, QTableWidgetItem("×" + str(self.bt1)))                luckinmain.main_ui.tableWidget.setItem(name.index('草莓芝士茶'), 2, QTableWidgetItem(str(self.num_act1)))            if '草莓芝士茶' not in name:                if self.bt1 != 0:                    row_count = luckinmain.main_ui.tableWidget.rowCount()                    luckinmain.main_ui.tableWidget.insertRow(row_count)                    luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(activity.activity_ui.label_3.text()))                    luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt1)))                    luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_act1)))        else:            if self.bt1 != 0:                row_count = luckinmain.main_ui.tableWidget.rowCount()                luckinmain.main_ui.tableWidget.insertRow(row_count)                luckinmain.main_ui.tableWidget.setItem(row_count, 0, QTableWidgetItem(activity.activity_ui.label_3.text()))                luckinmain.main_ui.tableWidget.setItem(row_count, 1, QTableWidgetItem("×" + str(self.bt1)))                luckinmain.main_ui.tableWidget.setItem(row_count, 2, QTableWidgetItem(str(self.num_act1)))if __name__=="__main__":    app = QApplication(sys.argv)    luckinmain = Luckin_Main()    normal = Normal()    package = Package()    activity = Activity()    # 显示主界面    luckinmain.person()    # 绑定按钮    btn_normal = luckinmain.main_ui.pushButton_2    btn_normal.clicked.connect(normal.nor_order)    btn_package = luckinmain.main_ui.pushButton_3    btn_package.clicked.connect(package.pac_order)    btn_activity = luckinmain.main_ui.pushButton_4    btn_activity.clicked.connect(activity.act_order)    # 初始化name列表    name = []    sys.exit(app.exec_())

activity.py

from PyQt5 import QtCore, QtWidgetsfrom PyQt5.QtGui import QIconclass Ui_Activity(object):    def setupUi(self, Form):        # 设置活动页面ID        Form.setObjectName("Form")        # 设置活动页面大小        Form.resize(639, 335)        # 添加"加入订单"按钮        self.pushButton = QtWidgets.QPushButton(Form)        self.pushButton.setGeometry(QtCore.QRect(50, 240, 93, 31))        self.pushButton.setObjectName("pushButton")        self.pushButton_2 = QtWidgets.QPushButton(Form)        self.pushButton_2.setGeometry(QtCore.QRect(300, 240, 93, 31))        self.pushButton_2.setObjectName("pushButton_2")        self.label = QtWidgets.QLabel(Form)        self.label.setGeometry(QtCore.QRect(11, 220, 201, 20))        self.label.setObjectName("label")        self.label_2 = QtWidgets.QLabel(Form)        self.label_2.setGeometry(QtCore.QRect(20, 200, 161, 16))        self.label_2.setObjectName("label_2")        self.label_3 = QtWidgets.QLabel(Form)        self.label_3.setGeometry(QtCore.QRect(50, 180, 91, 16))        self.label_3.setObjectName("label_3")        self.label_4 = QtWidgets.QLabel(Form)        self.label_4.setGeometry(QtCore.QRect(30, 30, 141, 141))        self.label_4.setObjectName("label_4")        self.label_5 = QtWidgets.QLabel(Form)        self.label_5.setGeometry(QtCore.QRect(261, 220, 201, 20))        self.label_5.setObjectName("label_5")        self.label_6 = QtWidgets.QLabel(Form)        self.label_6.setGeometry(QtCore.QRect(270, 200, 161, 16))        self.label_6.setObjectName("label_6")        self.label_7 = QtWidgets.QLabel(Form)        self.label_7.setGeometry(QtCore.QRect(310, 180, 61, 16))        self.label_7.setObjectName("label_7")        self.label_8 = QtWidgets.QLabel(Form)        self.label_8.setGeometry(QtCore.QRect(280, 30, 151, 141))        self.label_8.setObjectName("label_8")        # 设置返回按钮        self.pushButton_3 = QtWidgets.QPushButton(Form)        self.pushButton_3.setGeometry(QtCore.QRect(490, 250, 101, 31))        self.pushButton_3.setObjectName("pushButton_3")        self.retranslateUi(Form)        QtCore.QMetaObject.connectSlotsByName(Form)    def retranslateUi(self, Form):        _translate = QtCore.QCoreApplication.translate        # 设置活动页面标题        Form.setWindowTitle(_translate("Form", "热销活动"))        # 设置活动页面窗口图标        Form.setWindowIcon(QIcon('./picture/activity.png'))        # 设置加入"加入订单"按钮内容        self.pushButton.setText(_translate("Form", "加入订单"))        self.pushButton_2.setText(_translate("Form", "加入订单"))        # 设置标签内容        self.label.setText(_translate("Form", "钱1"))        self.label_2.setText(_translate("Form", "2018.10.1-2018.10.31"))        self.label_3.setText(_translate("Form", "草莓芝士茶"))        self.label_4.setText(_translate("Form", "TextLabel"))        self.label_5.setText(_translate("Form", "钱2"))        self.label_6.setText(_translate("Form", "2018.11.1-2018.11.11"))        self.label_7.setText(_translate("Form", "小雪荔枝冰"))        self.label_8.setText(_translate("Form", "TextLabel"))        self.pushButton_3.setText(_translate("Form", "返回"))

luckinmain.py

from PyQt5 import QtCore, QtWidgetsfrom PyQt5.QtGui import QIconclass Ui_MainWindow(object):    def setupUi(self, MainWindow):        MainWindow.setObjectName("MainWindow")        MainWindow.resize(893, 489)        self.centralwidget = QtWidgets.QWidget(MainWindow)        self.centralwidget.setObjectName("centralwidget")        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_2.setGeometry(QtCore.QRect(510, 20, 101, 41))        self.pushButton_2.setObjectName("pushButton_2")        self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_3.setGeometry(QtCore.QRect(510, 80, 101, 41))        self.pushButton_3.setObjectName("pushButton_3")        self.pushButton_4 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_4.setGeometry(QtCore.QRect(510, 140, 101, 41))        self.pushButton_4.setObjectName("pushButton_4")        self.label = QtWidgets.QLabel(self.centralwidget)        self.label.setGeometry(QtCore.QRect(530, 200, 111, 21))        self.label.setObjectName("label")        self.label_2 = QtWidgets.QLabel(self.centralwidget)        self.label_2.setGeometry(QtCore.QRect(530, 230, 72, 15))        self.label_2.setObjectName("label_2")        self.label_3 = QtWidgets.QLabel(self.centralwidget)        self.label_3.setGeometry(QtCore.QRect(580, 230, 21, 16))        self.label_3.setObjectName("label_3")        self.label_4 = QtWidgets.QLabel(self.centralwidget)        self.label_4.setGeometry(QtCore.QRect(530, 260, 81, 21))        self.label_4.setObjectName("label_4")        self.label_5 = QtWidgets.QLabel(self.centralwidget)        self.label_5.setGeometry(QtCore.QRect(530, 290, 72, 15))        self.label_5.setObjectName("label_5")        self.label_6 = QtWidgets.QLabel(self.centralwidget)        self.label_6.setGeometry(QtCore.QRect(580, 290, 21, 16))        self.label_6.setObjectName("label_6")        self.label_7 = QtWidgets.QLabel(self.centralwidget)        self.label_7.setGeometry(QtCore.QRect(640, 20, 61, 21))        self.label_7.setObjectName("label_7")        self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)        self.tableWidget.setGeometry(QtCore.QRect(640, 40, 241, 231))        self.tableWidget.setObjectName("tableWidget")        self.tableWidget.setColumnCount(3)        self.tableWidget.setRowCount(0)        item = QtWidgets.QTableWidgetItem()        self.tableWidget.setHorizontalHeaderItem(0, item)        item = QtWidgets.QTableWidgetItem()        self.tableWidget.setHorizontalHeaderItem(1, item)        item = QtWidgets.QTableWidgetItem()        self.tableWidget.setHorizontalHeaderItem(2, item)        self.tableWidget.horizontalHeader().setDefaultSectionSize(70)        self.pushButton_5 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_5.setGeometry(QtCore.QRect(640, 290, 71, 31))        self.pushButton_5.setObjectName("pushButton_5")        self.pushButton_6 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_6.setGeometry(QtCore.QRect(640, 350, 71, 31))        self.pushButton_6.setObjectName("pushButton_6")        self.pushButton_7 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_7.setGeometry(QtCore.QRect(750, 350, 71, 31))        self.pushButton_7.setObjectName("pushButton_7")        self.pushButton_8 = QtWidgets.QPushButton(self.centralwidget)        self.pushButton_8.setGeometry(QtCore.QRect(750, 290, 71, 31))        self.pushButton_8.setObjectName("pushButton_8")        self.label_8 = QtWidgets.QLabel(self.centralwidget)        self.label_8.setGeometry(QtCore.QRect(10, 10, 481, 431))        self.label_8.setObjectName("label_8")        MainWindow.setCentralWidget(self.centralwidget)        self.menubar = QtWidgets.QMenuBar(MainWindow)        self.menubar.setGeometry(QtCore.QRect(0, 0, 893, 26))        self.menubar.setObjectName("menubar")        MainWindow.setMenuBar(self.menubar)        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", "luckin coffee"))        MainWindow.setWindowIcon(QIcon("./Picture/Luckin Coffee.png"))        self.pushButton_2.setText(_translate("MainWindow", "基本餐"))        self.pushButton_3.setText(_translate("MainWindow", "套餐"))        self.pushButton_4.setText(_translate("MainWindow", "活动"))        self.label.setText(_translate("MainWindow", "储值卡余额"))        self.label_2.setText(_translate("MainWindow", "钱"))        self.label_3.setText(_translate("MainWindow", "元"))        self.label_4.setText(_translate("MainWindow", "您的优惠券"))        self.label_5.setText(_translate("MainWindow", "券"))        self.label_6.setText(_translate("MainWindow", "张"))        self.label_7.setText(_translate("MainWindow", "您的订单"))        item = self.tableWidget.horizontalHeaderItem(0)        item.setText(_translate("MainWindow", "名称"))        item = self.tableWidget.horizontalHeaderItem(1)        item.setText(_translate("MainWindow", "数量"))        item = self.tableWidget.horizontalHeaderItem(2)        item.setText(_translate("MainWindow", "价格/元"))        self.pushButton_5.setText(_translate("MainWindow", "删除"))        self.pushButton_6.setText(_translate("MainWindow", "结算"))        self.pushButton_7.setText(_translate("MainWindow", "打印小票"))        self.pushButton_8.setText(_translate("MainWindow", "减少一份"))        self.label_8.setText(_translate("MainWindow", "图"))

normal.py

from PyQt5 import QtCore, QtWidgetsfrom PyQt5.QtGui import QIcon,QPixmapclass Ui_Normal(object):    def setupUi(self, Form):        # 设置基本餐页面ID        Form.setObjectName("Form")        # 设置基本餐页面大小        Form.resize(728, 459)        self.pushButton = QtWidgets.QPushButton(Form)        # setGeometry()        # 把窗口放到屏幕上并且设置窗口大小。        # 参数分别代表屏幕坐标的x、y和窗口大小的宽、高。        self.pushButton.setGeometry(QtCore.QRect(40, 190, 93, 41))        self.pushButton.setObjectName("pushButton")        self.pushButton_2 = QtWidgets.QPushButton(Form)        self.pushButton_2.setGeometry(QtCore.QRect(260, 190, 93, 41))        self.pushButton_2.setObjectName("pushButton_2")        self.pushButton_3 = QtWidgets.QPushButton(Form)        self.pushButton_3.setGeometry(QtCore.QRect(480, 190, 93, 41))        self.pushButton_3.setObjectName("pushButton_3")        self.pushButton_4 = QtWidgets.QPushButton(Form)        self.pushButton_4.setGeometry(QtCore.QRect(40, 400, 93, 41))        self.pushButton_4.setObjectName("pushButton_4")        self.pushButton_5 = QtWidgets.QPushButton(Form)        self.pushButton_5.setGeometry(QtCore.QRect(260, 400, 93, 41))        self.pushButton_5.setObjectName("pushButton_5")        self.pushButton_6 = QtWidgets.QPushButton(Form)        self.pushButton_6.setGeometry(QtCore.QRect(620, 400, 93, 41))        self.pushButton_6.setObjectName("pushButton_6")        self.label = QtWidgets.QLabel(Form)        self.label.setGeometry(QtCore.QRect(62, 170, 72, 15))        self.label.setObjectName("label")        self.label_2 = QtWidgets.QLabel(Form)        self.label_2.setGeometry(QtCore.QRect(65, 140, 121, 21))        self.label_2.setObjectName("label_2")        self.label_3 = QtWidgets.QLabel(Form)        self.label_3.setGeometry(QtCore.QRect(30, 10, 121, 111))        self.label_3.setObjectName("label_3")        self.label_4 = QtWidgets.QLabel(Form)        self.label_4.setGeometry(QtCore.QRect(280, 170, 72, 15))        self.label_4.setObjectName("label_4")        self.label_5 = QtWidgets.QLabel(Form)        self.label_5.setGeometry(QtCore.QRect(295, 140, 72, 15))        self.label_5.setObjectName("label_5")        self.label_6 = QtWidgets.QLabel(Form)        self.label_6.setGeometry(QtCore.QRect(240, 10, 131, 111))        self.label_6.setObjectName("label_6")        self.label_7 = QtWidgets.QLabel(Form)        self.label_7.setGeometry(QtCore.QRect(500, 170, 72, 15))        self.label_7.setObjectName("label_7")        self.label_8 = QtWidgets.QLabel(Form)        self.label_8.setGeometry(QtCore.QRect(514, 140, 91, 16))        self.label_8.setObjectName("label_8")        self.label_9 = QtWidgets.QLabel(Form)        self.label_9.setGeometry(QtCore.QRect(460, 10, 131, 111))        self.label_9.setObjectName("label_9")        self.label_10 = QtWidgets.QLabel(Form)        self.label_10.setGeometry(QtCore.QRect(60, 380, 72, 15))        self.label_10.setObjectName("label_10")        self.label_11 = QtWidgets.QLabel(Form)        self.label_11.setGeometry(QtCore.QRect(63, 360, 51, 16))        self.label_11.setObjectName("label_11")        self.label_12 = QtWidgets.QLabel(Form)        self.label_12.setGeometry(QtCore.QRect(30, 250, 121, 101))        self.label_12.setObjectName("label_12")        self.label_13 = QtWidgets.QLabel(Form)        self.label_13.setGeometry(QtCore.QRect(280, 380, 72, 15))        self.label_13.setObjectName("label_13")        self.label_14 = QtWidgets.QLabel(Form)        self.label_14.setGeometry(QtCore.QRect(280, 360, 131, 16))        self.label_14.setObjectName("label_14")        self.label_15 = QtWidgets.QLabel(Form)        self.label_15.setGeometry(QtCore.QRect(240, 250, 131, 101))        self.label_15.setObjectName("label_15")        self.retranslateUi(Form)        QtCore.QMetaObject.connectSlotsByName(Form)            def retranslateUi(self, Form):        _translate = QtCore.QCoreApplication.translate        Form.setWindowTitle(_translate("Form", "火热售卖"))        Form.setWindowIcon(QIcon("./Picture/normal.png"))        self.pushButton.setText(_translate("Form", "加入订单"))        self.pushButton_2.setText(_translate("Form", "加入订单"))        self.pushButton_3.setText(_translate("Form", "加入订单"))        self.pushButton_4.setText(_translate("Form", "加入订单"))        self.pushButton_5.setText(_translate("Form", "加入订单"))        self.pushButton_6.setText(_translate("Form", "返回"))        self.label.setText(_translate("Form", "钱1"))        self.label_2.setText(_translate("Form", "卡布奇诺"))        self.label_3.setText(_translate("Form", "TextLabel"))        self.label_3.setScaledContents(True)        self.label_4.setText(_translate("Form", "钱2"))        self.label_5.setText(_translate("Form", "拿铁"))        self.label_6.setText(_translate("Form", "TextLabel"))        self.label_6.setScaledContents(True)        self.label_7.setText(_translate("Form", "钱3"))        self.label_8.setText(_translate("Form", "摩卡"))        self.label_9.setText(_translate("Form", "TextLabel"))        self.label_9.setScaledContents(True)        self.label_10.setText(_translate("Form", "钱4"))        self.label_11.setText(_translate("Form", "标准美式"))        self.label_12.setText(_translate("Form", "TextLabel"))        self.label_12.setScaledContents(True)        self.label_13.setText(_translate("Form", "钱5"))        self.label_14.setText(_translate("Form", "焦糖玛奇朵"))        self.label_15.setText(_translate("Form", "TextLabel"))        self.label_15.setScaledContents(True)

setmeal.py

from PyQt5 import QtCore, QtWidgetsfrom PyQt5.QtGui import QIcon,QPixmapclass Ui_Setmeal(object):    def setupUi(self, Form):        Form.setObjectName("Form")        Form.resize(728, 393)        self.pushButton = QtWidgets.QPushButton(Form)        self.pushButton.setGeometry(QtCore.QRect(90, 280, 91, 31))        self.pushButton.setObjectName("pushButton")        self.pushButton_2 = QtWidgets.QPushButton(Form)        self.pushButton_2.setGeometry(QtCore.QRect(340, 280, 93, 31))        self.pushButton_2.setObjectName("pushButton_2")        self.label = QtWidgets.QLabel(Form)        self.label.setGeometry(QtCore.QRect(110, 250, 72, 15))        self.label.setObjectName("label")        self.label_2 = QtWidgets.QLabel(Form)        self.label_2.setGeometry(QtCore.QRect(360, 250, 72, 15))        self.label_2.setObjectName("label_2")        self.label_3 = QtWidgets.QLabel(Form)        self.label_3.setGeometry(QtCore.QRect(90, 220, 131, 21))        self.label_3.setObjectName("label_3")        self.label_4 = QtWidgets.QLabel(Form)        self.label_4.setGeometry(QtCore.QRect(345, 220, 111, 21))        self.label_4.setObjectName("label_4")        self.label_5 = QtWidgets.QLabel(Form)        self.label_5.setGeometry(QtCore.QRect(60, 20, 161, 171))        self.label_5.setObjectName("label_5")        self.label_6 = QtWidgets.QLabel(Form)        self.label_6.setGeometry(QtCore.QRect(300, 20, 171, 171))        self.label_6.setObjectName("label_6")        self.pushButton_3 = QtWidgets.QPushButton(Form)        self.pushButton_3.setGeometry(QtCore.QRect(560, 280, 93, 31))        self.pushButton_3.setObjectName("pushButton_3")        self.retranslateUi(Form)        QtCore.QMetaObject.connectSlotsByName(Form)    def retranslateUi(self, Form):        _translate = QtCore.QCoreApplication.translate        # 套餐价格        self.price_set1 = 89.0        self.price_set2 = 67.0        Form.setWindowTitle(_translate("Form", "豪华套餐"))        Form.setWindowIcon(QIcon("./Picture/setmeal.png"))        self.pushButton.setText(_translate("Form", "加入订单"))        self.pushButton_2.setText(_translate("Form", "加入订单"))        self.pushButton_3.setText(_translate("Form", "返回"))        self.label.setText(_translate("Form", "钱1"))        self.label.setText(str(self.price_set1) + "元/份")        self.label_2.setText(_translate("Form", "钱2"))        self.label_2.setText(str(self.price_set2) + "元/份")        self.label_3.setText(_translate("Form", "咖啡香茶外送套餐"))        self.label_4.setText(_translate("Form", "咖啡冰淇淋套餐"))        self.label_5.setText(_translate("Form", "TextLabel"))        self.label_5.setPixmap(QPixmap('./picture/套餐2.png'))        self.label_5.setScaledContents(True)        self.label_6.setText(_translate("Form", "TextLabel"))        self.label_6.setPixmap(QPixmap('./picture/套餐1.png'))        self.label_6.setScaledContents(True)

我贴的代码是完整的代码，完整复制可以运行只不过不会显示图片。

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