[docs] [issue10461] Use with statement throughout the docs

[Roundup Robot]

Roundup Robot <devnull at devnull> added the comment:

New changeset c3d28c84a372 by Éric Araujo in branch 'default':
Use with statement where it improves the documentation (closes #10461)
http://hg.python.org/cpython/rev/c3d28c84a372

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nosy: +python-dev
resolution: accepted -> fixed
status: open -> closed

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<http://bugs.python.org/issue10461>
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