What am I doing wrong in this simple tkinter example?

[Yves S. Garret]

On Saturday, March 16, 2013 11:08:24 AM UTC-4, Chris Angelico wrote:
> On Sun, Mar 17, 2013 at 1:53 AM, Yves S. Garret
> 
> <your... at gmail.com> wrote:
> 
> > Hi all, I'm well into "Python Programming for the Absolute Beginner" in order to
> 
> > become more acquainted with the language.  However, when I got to page 304 and
> 
> > did my first example:
> 
> >
> 
> > http://bin.cakephp.org/view/1107093008
> 
> >
> 
> > And this is the error that I'm getting:
> 
> >
> 
> > http://bin.cakephp.org/view/399711843
> 
> >
> 
> > This is the code that came with the book:
> 
> >
> 
> > http://bin.cakephp.org/view/514822432
> 
> >
> 
> >
> 
> > What I don't understand is, why am I getting that error?  I've done diff -w
> 
> > and the code looks for the most part the same.  What am I doing wrong when I
> 
> > put the application together?
> 
> 
> 
>     self.secret_txt.delete(0.0, END)
> 
>     self.secret_txt.delete(0.0, message)
> 
> 
> 
> Is the second one supposed to be adding text? I'm not familiar with
> 
> tkinter but that's the line with the error, and it looks a little odd.
> 
> 
> 
> ChrisA

Yes, the second line is supposed to add the text.