[issue12160] codecs doc: what is StreamCodec?

[Éric Araujo]

Changes by Éric Araujo <merwok at netwok.org>:


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assignee:  -> docs at python
components: +Documentation
nosy: +docs at python
stage:  -> patch review
versions: +Python 2.7, Python 3.1, Python 3.2

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<http://bugs.python.org/issue12160>
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