[issue14673] add sys.implementation

[Eric Snow]

New submission from Eric Snow <ericsnowcurrently at gmail.com>:

(see thread at http://mail.python.org/pipermail/python-ideas/2012-April/014878.html)

This is a patch to add sys.implementation to Python (with doc addition).  The main motivation is to have an explicit place to look for the name and version of the implementation for generating the import cache tag (a la PEP 3147).

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components: Interpreter Core
files: sys_implementation.diff
keywords: patch
messages: 159357
nosy: eric.snow
priority: normal
severity: normal
status: open
title: add sys.implementation
type: behavior
versions: Python 3.3
Added file: http://bugs.python.org/file25369/sys_implementation.diff

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