Matthew Hemke <mghe...@gmail.com> added the comment:

I'm not sure if I misunderstood you, or you misunderstood me, but adding an 
option to the askstring dialog that would take a function handle would also 
allow you to use it for things other than strings (ints,etc.)

Tkinter Entry does this: you set the validatecommand option to a function 
handle that returns true or false to determine whether the input was valid.

I will try and code an example over the weekend.

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue12723>
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