来自用户输入的股票交易，并在Python中显示结果

嗨，我正在努力让我的程序工作。它需要接受多个股票交易，并按顺序显示所有股票交易。我该怎么做呢？到目前为止，我是这样写的：

def main():
    def stockInput():

         while True:
            lst = []
            stockName = input("Enter stock name: ")
            lst.append(stockName)
            stockNumber = int(input("Enter number of shares Joe bought: "))
            lst.append(stockNumber)
            stockPurchase = float(input("Enter the purchase price of the stock: "))
            lst.append(stockPurchase)
            stockSell = float(input("Enter the sell price of the stock: "))
            lst.append(stockSell)
            brokerComm = float(input("Enter the broker commission: "))
            lst.append(brokerComm)
            finishInput = input("If you want to quit, type quit, otherwise type enter to reenter information:")
            if finishInput == "quit":
                return lst

    def calcs():
        lst2 = []
        list1 = stockInput()
        print(list1)
        stockName = list1[0]
        print(stockName)
        stockNumber = list1[1]
        print(stockNumber)
        stockPurchase = list1[2]
        print(stockPurchase)
        stockSell = list1[3]
        print(stockSell)
        brokerComm = list1[4]
        print(brokerComm)

        amountPaid = stockNumber * stockPurchase

        paidCommission = amountPaid * brokerComm

        amountSold = stockNumber * stockSell

        soldCommission = amountSold * brokerComm

        profitLoss = (amountSold - soldCommission) - (amountPaid + paidCommission)
        print(amountPaid)
        print(paidCommission)
        print(amountSold)
        print(soldCommission)
        print("The total profit or loss is ", profitLoss)
        lst2.append(stockName)
        lst2.append(amountPaid)
        lst2.append(paidCommission)
        lst2.append(amountSold)
        lst2.append(soldCommission)
        lst2.append(profitLoss)
        return lst2

    def display():
        list2 = calcs()

        print("The name of the stock is : ", list2[0])
        print("The amount of money paid is : ", list2[1])
        print("The amount of money paid in commission is : ", list2[2])
        print("The amount of money sold the stock for is : ", list2[3])
        print("The amount of money paid in commission for the sold stock is : ", list2[4])
        print("The amount of money made or lost is: ", list2[5])


    display()

main()

---

在StockInput（）内的while循环开始时，将lst重新初始化为[]。那会把你输入的最后一批货一笔勾销。你有：

while True:
    lst = []
    <other stuff>

为True时：
lst=[]

你想要：

lst = []
while True:
    <other stuff>

lst=[]
尽管如此：

我建议通过让

stockInput（）

返回列表，而不仅仅是一个列表，稍微改变一些内容，以适应多个股票输入。您可以通过以下方式完成此操作：

def stockInput():
    lst = []
     while True:
        stock = []
        stockName = input("Enter stock name: ")
        stock.append(stockName)
        stockNumber = int(input("Enter number of shares Joe bought: "))
        stock.append(stockNumber)
        stockPurchase = float(input("Enter the purchase price of the stock: "))
        stock.append(stockPurchase)
        stockSell = float(input("Enter the sell price of the stock: "))
        stock.append(stockSell)
        brokerComm = float(input("Enter the broker commission: "))
        stock.append(brokerComm)
        lst.append(stock)
        finishInput = input("If you want to quit, type quit, otherwise type enter to reenter information:")
        if finishInput == "quit":
            return lst

这样，在calc中，您就可以遍历列表列表：

def calcs():
    lst2 = []
    allstocks = stockInput()
    for stock in all stocks:
        print(stock)
        stockName = stock[0]
        print(stockName)
        stockNumber = stock[1]
        print(stockNumber)
        stockPurchase = stock[2]
        print(stockPurchase)
        stockSell = stock[3]
        print(stockSell)
        brokerComm = stock[4]
        print(brokerComm)

        #HERE IS WHERE YOU DO ALL YOUR CALCULATIONS
        calculatedStock = [HERE IS WHERE YOU SET ALL YOUR NECESSARY DATA]
        lst2.append(calculatedStock)
    return lst2

---

然后，您可以在

display（）

中再次遍历每个项目，用一个简单的

为calcs（）中的项目打印每个库存：

哪个部分不起作用？当你尝试运行它时会发生什么？它只需要一个股票并输出它，但我需要它获取多个股票。我们不能在这里使用列表，而只使用主循环来获得相同的结果吗？是的，我们可以，这只是给它增加了一点组织性，如果需要对不同的股票条目进行相互比较的话，它会更容易扩展。当然，完整的解决方案/更常见的解决方案是创建一个名为

stock

的类，然后从那里开始工作，但这是一个很好的中间过程。您的意思是创建一个基于用户输入信息创建股票的stock类吗？是否可以避免使用类而只使用函数来实现相同的结果？上面的代码就是通过将所有股票值保存在一个列表中来实现的。另一种方法是将列表标记到字典中，并将键设置为类似于

stockx

的内容，在这里您可以更改x以获取某些股票。