单选按钮从 for loop tkinter 中的值中选择多个选项

Question

选择单选按钮时，如果两个选项具有相同的元素/值，则它们都被选中。

from tkinter import*

class CourseInfo:
    def __init__(self, subject):
        self.subjectName = subject
        self.selectedselected = "0" #default setting

class SubjectGUI:
    def __init__(self, parent):

        #setting up list for subject objects
        self.subjectInfo = [CourseInfo("English"), CourseInfo("English"), CourseInfo("Math"), CourseInfo("Math")]

        #set up for subject radio buttons
        self.subjectChoice = StringVar() #instance for StringVar created
        self.subjectChoice.set("*") #sets the initial selection

        self.rb_info = []

        for subject in self.subjectInfo: #for loop outputs show info
            self.show_rb = Radiobutton(parent, variable = self.subjectChoice, value = subject.subjectName, text = subject.subjectName, command = self.select_subject)
            self.rb_info.append(self.subjectChoice)
            self.show_rb.pack()

        self.selection_label = Label(text = "You have selected: ")
        self.selection_label.pack()

    def select_subject(self):

        for i in range(len(self.subjectInfo)):
            subject = self.rb_info[i].get()
            self.subjectInfo[i].selectedselected = subject


        self.selection_label.configure(text = "You have selected: " + subject)


# main routine
if __name__ == "__main__":
    root = Tk()
    subjectChoice = SubjectGUI(root)
    root.mainloop()

我做到了，所以我添加到列表中的元素是不同的（例如 CourseInfo("English1")、CourseInfo("English2")...），我的程序按照我想要的方式运行。只有当元素相同时它才不起作用。我尝试附加到如上所示的列表，但这并没有解决我的错误。

如何做到即使元素/值相同，也只选择一个单选按钮？

Answer 1

单选按钮的全部意义在于每个单选按钮都有不同的值。它们不适用于一组具有相同值的两个单选按钮。