If i create a widget in Tkinter i can specify a widget name that takes part in tcl/tk "widget path" concept. For example:
from Tkinter import *
button = Button( Frame( Tk(), name = "myframe" ), name = "mybutton" )
str( button ) == ".myframe.mybutton"
Is it possible to get a widget by it's name, "mybutton" in my example?
Yes, but you have to hold a reference to the root Tk instance: just use the Tk.nametowidget() method:
>>> from Tkinter import *
>>> win = Tk()
>>> button = Button( Frame( win, name = "myframe" ), name = "mybutton" )
>>> win.nametowidget("myframe.mybutton")
<Tkinter.Button instance at 0x2550c68>
Every Tkinter widget has an attribute children which is a dictionary of widget name→widget instance. Given that, one can find any subwidget by:
widget.children['subwidget_name'].children['subsubwidget_name'] # ...
widget.children['foo'] you could use widget.nametowidget('foo') to not rely on the attribute dict. nametowidget is internally query-ing that attribute.