[docs] [issue20477] Add examples of using the new contentmanager api to the email docs

[R. David Murray]

New submission from R. David Murray:

Here are the examples I promised to write in issue 18891.

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assignee: docs at python
components: Documentation, email
files: contentmanager-examples.patch
keywords: patch
messages: 209922
nosy: barry, docs at python, r.david.murray
priority: normal
severity: normal
stage: commit review
status: open
title: Add examples of using the new contentmanager api to the email docs
type: behavior
versions: Python 3.4
Added file: http://bugs.python.org/file33850/contentmanager-examples.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20477>
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