ipaddress ver. 1.0.14 IPv4Network off by 1

[khiraiongakuisa-geeknet]

BPO	30407
Nosy	@zhangyangyu, @khirai@ongaku.isa-geek.net

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2017-05-20.02:02:34.745>
created_at = <Date 2017-05-19.21:34:42.874>
labels = ['invalid']
title = 'ipaddress ver. 1.0.14 IPv4Network off by 1'
updated_at = <Date 2017-05-24.05:08:08.942>
user = 'https://github.com/khiraiongakuisa-geeknet'

bugs.python.org fields:

activity = <Date 2017-05-24.05:08:08.942>
actor = 'xiang.zhang'
assignee = 'none'
closed = True
closed_date = <Date 2017-05-20.02:02:34.745>
closer = 'xiang.zhang'
components = []
creation = <Date 2017-05-19.21:34:42.874>
creator = 'kghongaku'
dependencies = []
files = []
hgrepos = []
issue_num = 30407
keywords = []
message_count = 5.0
messages = ['293978', '293980', '293991', '294254', '294321']
nosy_count = 2.0
nosy_names = ['xiang.zhang', 'kghongaku']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue30407'
versions = ['Python 2.7']

[khiraiongakuisa-geeknet]

for x in ipaddress.IPv4Network(u"192.168.0.0/23").hosts():
    print x

contains 192.168.1.0 but does not contain 192.168.1.255

ipaddress version 1.0.14

[khiraiongakuisa-geeknet]

tested with 1.0.18 with same results.

[zhangyangyu]

See the doc: https://docs.python.org/3/library/ipaddress.html#ipaddress.IPv4Network.hosts. For hosts() method, network address and broadcast address are excluded from the result. So it's right IPv4Address('192.168.0.0') and IPv4Address('192.168.1.255') are not included.

[khiraiongakuisa-geeknet]

i thought it was inconsistent that
192.168.1.0 was included, but 192.168.0.0 was not.

[zhangyangyu]

"192.168.0.0" is the network address of "192.168.0.0/23" while "192.168.1.0" not. :-)