[issue23103] ipaddress should be Flyweight

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Here is a patch which makes IPv4Address and IPv6Address more lightweight (for other classes the size is not so important). It makes _version the class attribute and adds __slots__.

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keywords: +patch
resolution: wont fix -> 
stage:  -> patch review
status: closed -> open
versions: +Python 3.5 -Python 3.4
Added file: http://bugs.python.org/file37539/ipaddress_lightweight.patch

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<http://bugs.python.org/issue23103>
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