[New-bugs-announce] [issue21828] added/corrected containment relationship for networks in lib ipaddress

[Nicolas Limage]

New submission from Nicolas Limage:

The current version of the ipaddress library implements containment relationship in a way that a network is never contained in another network :

>>> from ipaddress import IPv4Network,IPv4Address
>>> IPv4Network(u'192.168.22.0/24') in IPv4Network(u'192.168.0.0/16')
False

I think it would be better to define the containment relationship between networks as such :

- if network A contains all the ip addresses of network B, then B in A is True
- by extension of this rule, A in A is True

It is useful to quickly determine if a network is a subnet of another

----------
components: Library (Lib)
files: ipaddress-network-containment.diff
keywords: patch
messages: 221350
nosy: Nicolas.Limage
priority: normal
severity: normal
status: open
title: added/corrected containment relationship for networks in lib ipaddress
type: behavior
versions: Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4, Python 3.5
Added file: http://bugs.python.org/file35737/ipaddress-network-containment.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21828>
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