tkinter coordinates, conversion

[Ron Provost]

Is there any way in tkinter to convert between coordinate systems?  Specifically, I'm refering to the canvas.  I'm getting x and y's back in mouse events and I would like to convert them back to inches 'i', centemeters 'c', millimeters 'm' or points 'p'.  Which I wish to use to provided information back to the user.

Thanks,
Ron
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