Question

编码时我遇到了这个错误，我不知道这意味着什么。

line 59, in <module>
    filename=class_name + ".csv"
TypeError: unsupported operand type(s) for +: 'int' and 'str'

我不确定我搞砸了哪里，但可能与类号的验证有关。

while True:
    try:
        class_name=int(input("Are you in class 1, 2 or 3? "))
        if class_name in [1, 2, 3]:
            print(name,", welcome to this maths test!")
            break 
        else:
            print ("Class has to be 1, 2 or 3")
    except ValueError:
        print ("Class has to be 1, 2 or 3")



filename=class_name + ".csv"

with open(filename, 'a') as f:
        f.write(str(name) + " : " + str(score) + '\n')

if results("Do you wish to view previous results for your class? (yes or no) "):
        with open(filename, 'r') as f:
            print(f.read())

Answer 1

class_name是int。你在这里分配：

class_name=int(input("Are you in class 1, 2 or 3? "))

但是，您无法连接整数和字符串，因此必须先将int转换为str：

filename= str(class_name) + ".csv"

为什么我得到一个不受支持的操作数类型错误？

1 个答案: