运行python-cod的visual studio中，+：“int”和“str”消息的操作数类型不受支持

Question

我很困惑我的代码出了什么问题，我一直收到错误消息“不支持+的操作数类型：'int'和'str'”

#Lab 5-4 The Bottle Return Program

#the main function
def main():
    endProgram = 'no'
    while endProgram == 'no':
        totalBottles = getBottles()
        totalPayout = calcPayout(totalBottles)
        printInfo(totalBottles, totaPayout)
        endProgram = raw_input('Do you want to end the program?(Enter yes or no): ')   
def getBottles():
    totalBottles = 0
    todayBottles = 0
    counter = 1
    while counter <= 7:
        todayBottles = input('Enter the number of bottles for today: ')
        totalBottles = totalBottles + todayBottles
        counter = counter + 1
    return totalBottles

def calcPayout(totalBottles):
    totalPayout = 0 
    totalPayout = totalBottles * .10
    return totalPayout

def printInfo(totalBottles, totalPayout):
    print ('The total number of bottles collected is', totalBottles)
    print ('The total paid out is $', totalPayout)
main()

Answer 1

 totalBottles = 0
    todayBottles = 0
    counter = 1
    while counter <= 7:
        todayBottles = int(input('Enter the number of bottles for today: '))
        totalBottles = totalBottles + todayBottles
        counter = counter + 1
    return totalBot

因为input（）函数以字符串形式返回输入，所以todayBalts是一个字符串。totalbalts变量是一个整数。不能将字符串添加到整数中，因此会出现错误。您应该通过这样做将值从string更改为integer（注意while循环下的int函数）

Answer 2

这个错误的意思正是它所说的：您试图使用+向int添加一个字符串

找到发生这种情况的位置，并将字符串转换为整数（如果要执行数字加法），或将整数转换为字符串（如果要进行字符串连接）。在

完整的异常消息（您没有包括在内）将指定精确的行。在