Getting the parent of a parent widget in Python Tkinter

问题

I am trying to get the parent of a widget then get the parent of that widget. But Everytime I try to I get a error.

Error:

AttributeError: 'str' object has no attribute '_nametowidget'

Why is it giving me that error. Can someone explain to me why I am getting this error and help me to fix it?

Code:

parent = event.widget.winfo_parent()
parentName = event.widget._nametowidget(parent)

frameParent = parentName.winfo_parent()
frameParentName = frameParent._nametowidget(frameParent)

回答1:

http://effbot.org/tkinterbook/widget.htm

Mentions as below, winfo_parent() is a method to get parent's name.

The error you get means that event.widget doesn't has the method named _nametowidget. So you could not call that as a function.

You may try codes below to get the parent.

parent = event.widget.winfo_parent()
from Tkinter import Widget
Widget._nametowidget(parent)

回答2:

grandparent = event.widget.master.master

See the answer here.

回答3:

Your second call to _nametowidget() is different than your first. Your fourth line is bad, since you're basing the call to _nametowidget() on a string (frameParent) instead of on a widget (parentName). This is partly because your naming convention of "widget" and "widgetName" is reversed...

frameParentName = frameParent._nametowidget(frameParent)

                   ^^^^^^^^^^^ -- this is the name string. you need a widget

I would slightly rewrite your code as follows:

parentName = event.widget.winfo_parent()
parent     = event.widget._nametowidget(parentName) #event.widget is your widget

frameParentName = parent.winfo_parent()
frameParent     = parent._nametowidget(frameParentName) #parent is your widget

来源：https://stackoverflow.com/questions/27161734/getting-the-parent-of-a-parent-widget-in-python-tkinter