[docs] [issue11426] CSV examples can't close their files

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

Patch looks good to me.
The quotes are somewhat inconsistent (sometimes '' and sometimes ""), if you want you can "fix" them while you are at it.

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<http://bugs.python.org/issue11426>
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