[docs] [issue22155] Out of date code example for tkinter's createfilehandler

[Martin Panter]

Martin Panter added the comment:

For the record, I have used this code in 2.7 in the past (though I mainly use Python 3). The Python 2 version of the changes look fine to me.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22155>
_______________________________________