水果系统(面向过程,面向对象)

fruit = []

def menu():
    print(
        '''
        ********************水果超市********************  （面向对象，面向过程）
                1. 查询全部水果
                2. 查询指定名称的水果
                3. 增加水果（增加到数据库）
                4. 修改水果数量或者价格
                5. 删除水果
                6. 按照价格排序
                7. 退出系统
        ***********************************************
        '''
        )

def showFruit():
    '''功能1 查询全部水果'''
    print('-' * 30)
    print("水果的信息如下:")
    print('-' * 30)
    print('序号 水果名  价格  数量')
    fru_id = 1
    for fru_temp in fruit:
        print("%s   %s   %s    %s "%(fru_id,fru_temp['name'],fru_temp['price'],fru_temp['num']))
        fru_id += 1

def searchFruitName():
    '''功能2 查询指定名称的水果'''
    showFruit()
    fru_name = input("请输入想要查询的水果名称")
    fru_id = 1
    for fru in fruit:
        if fru_name in fru['name']:
            print("该水果信息如下:")
            print("%d   %s  %s    %s " % (fru_id, fru['name'], fru['price'], fru['num']))
            return
        fru_id += 1
    print("没有查询到该水果名称")


def addFruit():
    '''功能3 增加水果（增加到数据库）'''
    newFruitName = input('请输入新水果的名称')
    newFruitPrice = input('请输入新水果的价格')
    newFruitNum =  input('请输入新水果的数量')

    newFruit = {}
    newFruit['name'] = newFruitName
    newFruit['price'] = newFruitPrice
    newFruit['num'] = newFruitNum

    fruit.append(newFruit)


def changeFruit():
    '''功能4 修改水果数量或者价格'''
    showFruit()

    fru_id = int(input("请输入需要修改的水果的序号: "))

    changeFruitName = input('请输入修改后的水果的名称')
    changeFruitPrice = input('请输入修改后的水果的价格')
    changeFruitNum = input('请输入修改后的水果的数量')

    fruit[fru_id - 1]['name'] = changeFruitName
    fruit[fru_id - 1]['price'] = changeFruitPrice
    fruit[fru_id - 1]['num'] = changeFruitNum

def delFruit():
    '''功能5 删除水果'''
    showFruit()
    delFruitId = int(input('请输入要删除的序号:'))
    del fruit[delFruitId - 1]

def sortFruit():
    '''功能6 按照价格排序'''
    showFruit()
    sortStandard = input("请选择(0升序；1降序):")
    if sortStandard == "0":
        sortStandard = True
    elif sortStandard == "1":
        sortStandard = False
    else:
        print("您的输入有误，请重新输入！")
    fruit.sort(key = lambda x:x['price'],reverse = sortStandard)
    showFruit()

def exitSystem():
    '''功能7 退出系统'''
    print("您已经退出水果超市系统")
    exit()

def main():
    notExit = True
    while notExit:
        menu()
        try:
            option = int(input("请选择功能:"))
        except Exception as e:
            print("请重新输入")
        if option in [i for i in range(1,8)]:
            if option == 1:
                showFruit()
            elif option == 2:
                searchFruitName()
            elif option == 3:
                addFruit()
            elif option == 4:
                changeFruit()
            elif option == 5:
                delFruit()
            elif option == 6:
                sortFruit()
            elif option == 7:
                notExit = False
                exitSystem()


if __name__ == '__main__':
    main()

---

class FruitMarket():
    def __init__(self):
        self.fruit = []

    def showFruit(self):
        '''功能1 查询全部水果'''
        print('-' * 30)
        print("水果的信息如下:")
        print('-' * 30)
        print('序号 水果名  价格  数量')
        fru_id = 1
        for fru_temp in self.fruit:
            print("%s   %s   %s    %s " % (fru_id, fru_temp['name'], fru_temp['price'], fru_temp['num']))
            fru_id += 1

    def searchFruitName(self):
        '''功能2 查询指定名称的水果'''
        self.showFruit()
        fru_name = input("请输入想要查询的水果名称")
        fru_id = 1
        for fru in self.fruit:
            if fru_name in fru['name']:
                print("该水果信息如下:")
                print("%d   %s  %s    %s " % (fru_id, fru['name'], fru['price'], fru['num']))
                return
            fru_id += 1
        print("没有查询到该水果名称")

    def addFruit(self):
        '''功能3 增加水果（增加到数据库）'''
        newFruitName = input('请输入新水果的名称')
        newFruitPrice = input('请输入新水果的价格')
        newFruitNum = input('请输入新水果的数量')

        newFruit = {}
        newFruit['name'] = newFruitName
        newFruit['price'] = newFruitPrice
        newFruit['num'] = newFruitNum

        self.fruit.append(newFruit)

    def changeFruit(self):
        '''功能4 修改水果数量或者价格'''
        self.showFruit()

        fru_id = int(input("请输入需要修改的水果的序号: "))

        changeFruitName = input('请输入修改后的水果的名称')
        changeFruitPrice = input('请输入修改后的水果的价格')
        changeFruitNum = input('请输入修改后的水果的数量')

        self.fruit[fru_id - 1]['name'] = changeFruitName
        self.fruit[fru_id - 1]['price'] = changeFruitPrice
        self.fruit[fru_id - 1]['num'] = changeFruitNum

    def delFruit(self):
        '''功能5 删除水果'''
        self.showFruit()
        delFruitId = int(input('请输入要删除的序号:'))
        del self.fruit[delFruitId - 1]

    def sortFruit(self):
        '''功能6 按照价格排序'''
        self.showFruit()
        sortStandard = input("请选择(0升序；1降序):")
        if sortStandard == "0":
            sortStandard = True
        elif sortStandard == "1":
            sortStandard = False
        else:
            print("您的输入有误，请重新输入！")
        self.fruit.sort(key=lambda x: x['price'], reverse=sortStandard)
        self.showFruit()

    def exitSystem(self):
        '''功能7 退出系统'''
        print("您已经退出水果超市系统")
        exit()
def menu( ):
    print(
        '''
        ********************水果超市********************  （面向对象，面向过程）
                1. 查询全部水果
                2. 查询指定名称的水果
                3. 增加水果（增加到数据库）
                4. 修改水果数量或者价格
                5. 删除水果
                6. 按照价格排序
                7. 退出系统
        ***********************************************
        '''
    )

fruitmarket = FruitMarket()

def main():
    notExit = True
    while notExit:
        menu()
        try:
            option = int(input("请选择功能:"))
        except Exception as e:
            print("请重新输入")
        if option == 1:
            fruitmarket.showFruit()
        elif option == 2:
            fruitmarket.searchFruitName()
        elif option == 3:
            fruitmarket.addFruit()
        elif option == 4:
            fruitmarket.changeFruit()
        elif option == 5:
            fruitmarket.delFruit()
        elif option == 6:
            fruitmarket.sortFruit()
        elif option == 7:
            notExit = False
            fruitmarket.exitSystem()



if __name__ == '__main__':
    main()

---

 

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2020-05-24