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netaddr / netaddr

A network address manipulation library for Python

Home Page:https://netaddr.readthedocs.io/en/latest/

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Sort longest prefix

mmihir82 opened this issue · comments

commented

Hello, how to find longest prefix with the same network?
Can cidr_merge will work?

[IPNetwork('10.0.2.0/25'), IPNetwork('10.0.0.0/23'), IPNetwork('10.0.2.0/23'), IPNetwork('10.0.4.0/22')]

desired output would like to have
[IPNetwork('10.0.0.0/23'), IPNetwork('10.0.2.0/23'), IPNetwork('10.0.4.0/22')]

commented

I know this is a much older issue so may not be relevant to you anymore. However Python supports passing a key function to sorted. So you can simply do this:

by_longest = sorted(networks, reverse=True, key=lambda network: network.prefixlen)