我想提出一个独立的问题,它不会偏离原来的思路(考虑到由于我对论坛规则缺乏关注而导致的反对票)
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)
然后我将该函数调用到学生登录页面
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,我会看到一个没有按钮的窗口,并且出现这个错误
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(甚至有资格),你能帮忙吗
特别感谢martineau和jasonharper! 发现调查问卷已经被定义为一个按钮,你可以看到
我只需重新命名其中一个按钮
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