[issue42861] ipaddress - add ability to get next closet subnet of any prefix size
New submission from Faisal Mahmood :
The ipaddress module in Python is an excellent tool, but I noticed it is
missing a feature that I needed several months ago, which is the ability to
find the next closest subnet with a specific prefix length.
For example, imagine I had a IPv4Network("10.10.0.72/30"), how would I find the
next possible /25 address? It is not the most straightforward thing to do, so
think it would be a great enhancement to the ipaddress library.
I think this can be achieved by adding in a new method to the BaseNetwork
class, the method could be defined like "next_prefix(next_prefix=None)".
Calling this method would return an IPv4/v6 address that is the closest
possible match with the new prefix (defined as next_prefix).
Example calls:
v4 = IPv4Network("10.10.0.72/30")
next_network = v4.next_subnet(next_prefix=25)
# Output: next_network = IPv4Network("10.10.0.128/25")
v4 = IPv4Network("10.10.0.72/30")
next_network = v4.next_subnet(next_prefix=30)
# Output: next_network = IPv4Network("10.10.0.76/30")
v4 = IPv4Network("10.10.0.72/30")
next_network = v4.next_subnet() # if next_prefix is not defined it will use the
existing prefix of /30, so this call is exactly the same as the previous
# Output: next_network = IPv4Network("10.10.0.76/30")
v6 = IPv6Network("2001:db8::::::/112")
next_network = v6.next_subnet()
# Output: next_network = IPv6Network("2001:db8:::::aaab:0/112")
v6 = IPv6Network("2001:db8::::::/112")
next_network = v6.next_subnet(next_prefix=64)
# Output: next_network = IPv6Network("2001:db8::aaab::/64")
I am going to be working on this and plan to raise a PR soon. This is my first
time contributing to Python, so I appreciate your help / comments / suggestions
/ guidance as I go along.
--
components: Library (Lib)
messages: 384623
nosy: fasial.mahmood94
priority: normal
severity: normal
status: open
title: ipaddress - add ability to get next closet subnet of any prefix size
type: enhancement
versions: Python 3.10
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[issue42861] ipaddress - add ability to get next closet subnet of any prefix size
Faisal Mahmood added the comment: Not sure how to edit an issue, but I made a mistake, where I said: "...Calling this method would return an IPv4/v6 address that is the closest possible match..." I meant to say: "...Calling this method would return an IPv4/v6 -NETWORK- that is the closest possible match..." -- ___ Python tracker <https://bugs.python.org/issue42861> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42861] ipaddress - add ability to get next closet network of any prefix size
Faisal Mahmood added the comment: Updated the title and method naming, I previously mentioned the "next subnet" and called the method "next_subnet", but technically this is wrong. What this method should be doing is finding the next closest network of prefix size n. So I guess the method definition should be: `next_network(self, next_network=None)` -- title: ipaddress - add ability to get next closet subnet of any prefix size -> ipaddress - add ability to get next closet network of any prefix size ___ Python tracker <https://bugs.python.org/issue42861> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42861] ipaddress - add ability to get next closet network of any prefix size
Change by Faisal Mahmood : -- keywords: +patch pull_requests: +23006 stage: -> patch review pull_request: https://github.com/python/cpython/pull/24180 ___ Python tracker <https://bugs.python.org/issue42861> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42861] ipaddress - add ability to get next closet network of any prefix size
Faisal Mahmood added the comment: Bump :) -- ___ Python tracker <https://bugs.python.org/issue42861> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
