Question

首先，我想让我知道这个问题的方式：Python - tkinter 'AttributeError: 'NoneType' object has no attribute 'xview''

然而，在阅读完本文后，我仍然对这个问题感到困惑。我有一个使用Tkinter的程序。在其中，有两个文本框，用户可以键入文本。我希望那些盒子可以滚动。但是，我这样做有问题。这是我的代码：

from Tkinter import *

def main():
    window = Tk()
    window.title("TexComp")
    window.geometry("500x500")
    window.resizable(height=FALSE,width=FALSE)

    windowBackground = '#E3DCA8'

    window.configure(bg=windowBackground)

    instruction = Label(text="Type or paste your text into one box,\nthen paste the text you want to compare it too\ninto the other one.", bg=windowBackground).place(x=115, y=10)

    text1 = Text(width=25).pack(side=LEFT)
    text2 = Text(width=25).pack(side=RIGHT)

    scroll1y=Scrollbar(window, command=text1.yview).pack(side=LEFT, fill=Y, pady=65)
    scroll2y=Scrollbar(window, command=text2.yview).pack(side=RIGHT, fill=Y, pady=65)

    mainloop()

if __name__ == '__main__':
    main()

当我尝试运行此操作时，我收到错误消息＆＃34;＆＃39; NoneType＆＃39;对象没有属性＆＃39; yview＆＃39;＆＃34;在scroll1y和scroll2y滚动条上。我不确定为什么会这样，并且无法找到明确的答案。谢谢你的时间。

Answer 1

每个Tkinter小部件的grid，pack和place方法就地工作（它们始终返回None）。意思是，你需要按照自己的方式调用它们：

from Tkinter import *

def main():
    window = Tk()
    window.title("TexComp")
    window.geometry("500x500")
    window.resizable(height=FALSE,width=FALSE)

    windowBackground = '#E3DCA8'

    window.configure(bg=windowBackground)

    instruction = Label(text="Type or paste your text into one box,\nthen paste the text you want to compare it too\ninto the other one.", bg=windowBackground)
    instruction.place(x=115, y=10)

    text1 = Text(width=25)
    text1.pack(side=LEFT)
    text2 = Text(width=25)
    text2.pack(side=RIGHT)

    scroll1y=Scrollbar(window, command=text1.yview)
    scroll1y.pack(side=LEFT, fill=Y, pady=65)
    scroll2y=Scrollbar(window, command=text2.yview)
    scroll2y.pack(side=RIGHT, fill=Y, pady=65)

    mainloop()

if __name__ == '__main__':
    main()

NoneType对象没有属性yview

1 个答案: