《python程序语言设计》2018版第7章第2题创建一个stock类，一个公司股票。创建stock，包含TypeError: ‘float‘ object is not callable解决

使用百分比法计算股票变化值

百分比法是计算股票变化值的常用方法。具体操作是：将当前股票价格与前一交易日的股票价格进行比较，计算出价格变动的百分比。
公式为：（当前价格 - 前一交易日价格） / 前一交易日价格 × 100%。
这种方法简单明了，可以快速得出股票变化的百分比。

    print(f"This stock previous closing price is {base_date.previousClosingPrice()}")

TypeError: ‘float’ object is not callable

浮动对象不可调用？？？？？

发现了。我没有更新代码，应该是getCurrentPr()

代码如下：

import exCode07



def main():
    symbolStock = "INTC"
    nameStock = "Inter Corporation"
    previousNum = 20.5
    currentPriceNum = 20.35

    # symbolStock = input("Enter stock symbol is: ")
    # nameStock = input("Enter stock name is: ")
    # previousNum = eval(input("Enter stock previous closing price: "))
    # currentPriceNum = eval(input("Enter stock current price: "))

    base_date = exCode07.Stock(symbolStock, nameStock, previousNum, currentPriceNum)
    print(f"This stock symbol is {base_date.getSymbol()}")
    print(f"This stock name is {base_date.getName()}")
    print(f"This stock previous closing price is {base_date.getPrevious()}")
    print(f"This stock current price is {base_date.getCurrentPr()}")
    print(f"This stock current price - previous closing price is {base_date.getChangePercent()}")


main()

原谅我的懒惰哈哈哈

然后是stock类的代码，还是存放在exCode07文件里。当然您也可以 把两段代码放一起。都行

class Stock:
    def __init__(self, symbol, name, previousClosingPrice, 1currentPrice):
        self.symbol = symbol
        self.name = name
        self.previousClosingPrice = previousClosingPrice
        self.currentPrice = currentPrice

    # 利用百分比计算法 计算股票变化值
    def getChangePercent(self):
        aTemp = (self.currentPrice - self.previousClosingPrice) / (self.previousClosingPrice * 100)
        return round(aTemp, 4)

    def setName(self, name):
        self.name = name

    def getName(self):
        return self.name

    def setSymbol(self, symbol):
        self.symbol = symbol

    def getSymbol(self):
        return self.symbol

    def getPrevious(self):
        return self.previousClosingPrice

    def getCurrentPr(self):
        return self.currentPrice