[issue3638] tkinter.mainloop() is meaningless and crash: remove it

[Guilherme Polo]

Guilherme Polo <ggpolo at gmail.com> added the comment:

> I get an empty string with the text below, but I was expecting some

s/text/test

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3638>
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