[docs] [issue11425] Cleanup sample codes in tutorial.

[Georg Brandl]

Georg Brandl <georg at python.org> added the comment:

I made the c -> cls change in 88fe1ac48460. Some other fixes have already been made in py3k (like removing the duplicate index keyword), and for the others I completely agree with Raymond.

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nosy: +georg.brandl
resolution: rejected -> fixed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11425>
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