Missing code in linux_distribution python 2.7.11

[RasmusRynningRasmussen]

BPO	26222
Nosy	@terryjreedy, @kdwyer, @vadmium

^{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 2016-01-30.09:53:28.125>
created_at = <Date 2016-01-27.17:45:27.991>
labels = ['invalid', 'type-bug', 'library']
title = 'Missing code in linux_distribution python 2.7.11'
updated_at = <Date 2016-01-30.09:53:28.124>
user = 'https://bugs.python.org/RasmusRynningRasmussen'

bugs.python.org fields:

activity = <Date 2016-01-30.09:53:28.124>
actor = 'berker.peksag'
assignee = 'none'
closed = True
closed_date = <Date 2016-01-30.09:53:28.125>
closer = 'berker.peksag'
components = ['Library (Lib)']
creation = <Date 2016-01-27.17:45:27.991>
creator = 'Rasmus Rynning Rasmussen'
dependencies = []
files = []
hgrepos = []
issue_num = 26222
keywords = []
message_count = 4.0
messages = ['259037', '259128', '259159', '259232']
nosy_count = 4.0
nosy_names = ['terry.reedy', 'kdwyer', 'martin.panter', 'Rasmus Rynning Rasmussen']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue26222'
versions = ['Python 2.7']

[RasmusRynningRasmussen]

During the transition from python 2.7.10 to 2.7.11 some code seems to have been lost. platform.linux_distribution() is not able to recognise Debian based distributions in python 2.7.11.

The following code was present in platform.py, python 2.7.10, but seems to be missing in 2.7.11

# check for the LSB /etc/lsb-release file first, needed so
# that the distribution doesn't get identified as Debian.
try:
with open("/etc/lsb-release", "rU") as etclsbrel:
for line in etclsbrel:
m = _distributor_id_file_re.search(line)
if m:
_u_distname = m.group(1).strip()
m = _release_file_re.search(line)
if m:
_u_version = m.group(1).strip()
m = _codename_file_re.search(line)
if m:
_u_id = m.group(1).strip()
if _u_distname and _u_version:
return (_u_distname, _u_version, _u_id)
except (EnvironmentError, UnboundLocalError):
pass

[kdwyer]

The quoted code doesn't exist in 2.7.10 (https://hg.python.org/cpython/file/v2.7.10/Lib/platform.py)

It looks like it's from a patch applied by Debian themselves: see http://sources.debian.net/src/python2.7/2.7.11-3/debian/patches/platform-lsbrelease.diff/?hl=33#L33

[vadmium]

I think Kevin is right. Debian often carries its own downstream patches. In this case, the patch was proposed in bpo-9514, which is closed as “won’t fix”. In Python 3, linux_distribution() is apparently deprecated (bpo-1322).

[terryjreedy]

From the last two comments, it looks like this should be closed as 'not a bug'.