python - python 中未识别错误名称

Question

我正在创建一些代码，我可以将数据分类为不同的类别，例如将数据按字母顺序排序。我将测试的分数存储在 3 个不同的 txt 文件中，我需要读取它们然后将其打印到订单中。然而在我的代码中它说名称 class_ 未定义。有什么帮助吗？

loop = 1

while loop ==1:
    print("Welcome, you can sort the data from the scores by...")
    print("The following...")
    print()
    print("Option 1) sort score by alphabetically")
    print("Option 2) sort by average score- high to low")
    print("Option 3) sort by highest score- high to low")
    print("Option 5) Exit")

    choice = input("Select your option: ")
    choice = int(choice)



    if choice ==1:
        print("option 1 selected... Alphabetically")


        class_name = input('Which class?:')
        class_name = int(class_)

        if class_==1:
            open('class_1', 'r')
            lineList = inputFile.readlines()
            lineList.sort()
            print('The input in alphabetical order below :')
            for line in  lineList:
                print(line)

Answer 1

我想你想要

class_name = input('Which class?:')
class_name = int(class_)

成为

class_name = int(input('Which class?:'))

然后使用if class_name==1: