Tkinter: how to fill values in OptionMenu dynamically

[Russell E. Owen]

In article <mailman.896.1082605756.20120.python-list at python.org>,
 Jeffrey Barish <jeffbarish at starband.net> wrote:

>Is there a way to fill the values in an OptionMenu dynamically?  I need
>something like the add_command method from Menu.  Is there a better way
>to implement a pull-down list?

I see other postings showing two common solutions. A third is to try 
RO.Wdg from my RO package 
<http://www.astro.washington.edu/rowen/ROPython.html>. It may be a bit 
more stuff than you want, but RO.Wdg.OptionMenu allows you to set new 
values whenever you want and it includes improved versions of most of 
the other widgets.

-- Russell