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

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

Just two notes: The operations like “7205759403792794 * 10**30 / 2**56” in floatimport could use some parens; the patch removed a duplicate “statement: for” entry.

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nosy: +eric.araujo

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