Tkinter.Text widget - how to get text cursor position?

[Alex9968]

Is it possible to get position (in numbers) of the insertion cursor? As 
I understood, Text widget uses mark named INSERT to store it, which is 
available globally by just referencing INSERT, but how could I get 
actual coordinate numbers of the mark?
I need this because I want not just to insert string at, but to examine 
text before and after the insertion cursor. I can probably use .get() to 
extract the halves of text before and after cursor, but it'd be better 
just to know the position.

Thanks