在Tkinter格式的作业之前引用了“问卷”

Question

我想提出一个不会偏离原始主题的单独问题（由于我对论坛规则缺乏关注而给出了支持）

出于某种奇怪的原因，我创建了一个名为Questionnaire的新窗口：

def Questionnaire():
      quiz_page = Tk()
      quiz_page.title('Questionnaire')
      quiz_page.geometry('600x350')
      greet = Label(quiz_page, text='Welcome to the questionnaire! You will '
                                    'answer a few questions to produce a result '
                                    'for both you and your teacher to see!')
      greet.grid(row=0,column=0)

然后我将该函数称为学生登录页面。

def student_menu():
      #student_login.destroy()
      student_page = Tk()
      student_page.title('Hello student')
      student_page.geometry('300x130')
      Welcome_msg = Label(student_page, text='Welcome').pack()
      Questionnaire = Button(student_page,text='Quiz',command=Questionnaire).pack()
      View = Button(student_page,text='View',command=view).pack()

但是当我登录应用程序时，我得到一个没有按钮的窗口，这个错误。

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Hassan Nur\AppData\Local\Programs\Python\Python37-32\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "C:\Users\Hassan Nur\Documents\Python - Programming Project\Project\Python Project\Python Project.py", line 78, in student_confirm
    student_menu()
  File "C:\Users\Hassan Nur\Documents\Python - Programming Project\Project\Python Project\Python Project.py", line 107, in student_menu
    Questionnaire = Button(student_page,text='Quiz',command=Questionnaire).pack()
UnboundLocalError: local variable 'Questionnaire' referenced before assignment

如果可能（甚至符合条件），您能帮忙吗？

Answer 1

特别感谢martineau和jasonharper！发现调查问卷已被定义为按钮，您可以看到......

def student_menu():
  #student_login.destroy()
  student_page = Tk()
  student_page.title('Hello student')
  student_page.geometry('300x130')
  Welcome_msg = Label(student_page, text='Welcome').pack()
  Question = Button(student_page,text='Quiz',command=Questionnaire).pack()
  View = Button(student_page,text='View',command=view).pack()

我只需要重命名其中一个按钮