[docs] [issue27455] Fix tkinter examples to be PEP8 compliant

[Berker Peksag]

Berker Peksag added the comment:

Thanks for the patch. If you want to improve the examples in tkinter documentation, I'd suggest to update Class.__init__(self, ...) to super().__init__(...). There is no old-style classes in Python 3 anymore so those examples could be updated safely.

Also, please read https://docs.python.org/devguide/patch.html. Sending a patch from a Git checkout will only make the review process harder (and I will personally ignore them in the future).

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nosy: +berker.peksag, terry.reedy
stage:  -> patch review
type:  -> enhancement

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<http://bugs.python.org/issue27455>
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