TkInter网格函数错误消息

Question

我正在尝试运行以下代码：

from tkinter import *

root = Tk()

topFrame = Frame(root)
topFrame.pack(side=TOP)
leftFrame = Frame(root)
leftFrame.pack(side=LEFT)
botFrame = Frame(root)
botFrame.pack(side=BOTTOM)

button1 = Button(leftFrame, text="Button 1", fg="Black")
button2 = Button(leftFrame, text="Button 2", fg="Black")
button3 = Button(leftFrame, text="Button 3", fg="Black")

button1.grid(row=0, column=0)
button2.grid(row=1, column=0)
button3.grid(row=2, column=0)

ScaleWidget = Scale(root, from_=0, to=100)
ScaleWidget.grid(row=0, column=1)

ScaleWidget = Scale(root, from_=0, to=100, orient=HORIZONTAL)
ScaleWidget.grid(row=0, column=1)

root.mainloop()

但是，我得到以下错误消息：

^{pr2}$

我不知道该怎么办，非常感谢您的帮助，谢谢！在

Answer 1

对于共享同一父项的windows，不应混合使用网格管理器和包管理器：

Warning: Never mix grid and pack in the same master window. Tkinter will happily spend the rest of your lifetime trying to negotiate a solution that both managers are happy with. Instead of waiting, kill the application, and take another look at your code. A common mistake is to use the wrong parent for some of the widgets.

来源：http://effbot.org/tkinterbook/grid.htm