[Tutor] Python GUI

[Alan Gauld]

"David Merrick" <merrickdav at gmail.com> wrote 

Others have answered the immediate issue.
But...

>    def testNumber(self):
>        guess = int(self.numberEnt.get())
>        tries = 1
> 
>        while guess != the_number:
>            if guess > the_number:
>                      number += "Lower..."
>            else:
>                  number += "Higher..."
>            guess = int(self.numberEnt.get())
>            tries += 1

This is all wrong for a GUI appluication. 
You should not use loops in an event handler.
Instead let the event loop in Tkinter do the looping. 
You respond to the user clicking the submit button 
and evaluate that single value. You then wait for 
the next button press to signal that there is a new 
value to check.

Any time you see a loop inside a GUI event 
handler you should stop and check that it belongs there.
Usually it doesn't!

> number += "You guessed it!  The number was" + the_number
> number += "And it only took you " + tries + " tries!\n"
> self.numberTxt.delete(0.0, END)
> self.numberTxt.insert(0.0, number)

It may just be mail but this appears to be outside 
the method definition and indeed outside the class.
Is that correct? Or just a mail glitch? Since they refer 
to self they should be inside a method so I'll assume 
its a mail thing.

> # main
> number = ""
> the_number = random.randint(1, 100)

If you are using classes its normal to put most of 
the variables inside the classes. There is no reason 
for the_number to be a global value, it would be 
better as part of  the Application.

HTH,

-- 
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/