From: Stefano Rivera <stefanor@debian.org>
Date: Sat, 7 Oct 2017 09:38:58 +0200
Subject: Stdlib: Use /etc/lsb-release to identify the platform

Author: Matthias Klose <doko@debian.org>
Bug-Ubuntu: https://bugs.launchpad.net/bugs/196526
Bug-cpython: http://bugs.python.org/issue1322
Bug-cpython: http://bugs.python.org/issue9514
Origin: cpython Debian packaging
Last-Update: 2011-12-19
---
 lib-python/3/platform.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/lib-python/3/platform.py b/lib-python/3/platform.py
index 7af46ff..b573626 100755
--- a/lib-python/3/platform.py
+++ b/lib-python/3/platform.py
@@ -328,6 +328,10 @@ def _parse_release_file(firstline):
             id = l[1]
     return '', version, id
 
+_distributor_id_file_re = re.compile("(?:DISTRIB_ID\s*=)\s*(.*)", re.I)
+_release_file_re = re.compile("(?:DISTRIB_RELEASE\s*=)\s*(.*)", re.I)
+_codename_file_re = re.compile("(?:DISTRIB_CODENAME\s*=)\s*(.*)", re.I)
+
 def linux_distribution(distname='', version='', id='',
 
                        supported_dists=_supported_dists,
@@ -360,6 +364,25 @@ def _linux_distribution(distname, version, id, supported_dists,
         args given as parameters.
 
     """
+    # check for the Debian/Ubuntu /etc/lsb-release file first, needed so
+    # that the distribution doesn't get identified as Debian.
+    try:
+        etclsbrel = open("/etc/lsb-release", "rU")
+        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
+
     try:
         etc = os.listdir(_UNIXCONFDIR)
     except OSError:
