[Python-checkins] [3.7] bpo-26544: Get rid of dependence from distutils in platform. (GH-8356) (GH-8970) (GH-9061)
Victor Stinner
webhook-mailer at python.org
Wed Sep 5 10:46:01 EDT 2018
https://github.com/python/cpython/commit/1a3eb125dc07a28a5af62446778ed7cca95ed3da
commit: 1a3eb125dc07a28a5af62446778ed7cca95ed3da
branch: 3.6
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: Victor Stinner <vstinner at redhat.com>
date: 2018-09-05T16:45:57+02:00
summary:
[3.7] bpo-26544: Get rid of dependence from distutils in platform. (GH-8356) (GH-8970) (GH-9061)
(cherry picked from commit 7d81e8f5995df6980a1a02923e224a481375f130)
(cherry picked from commit 20a8392cec2967f15ae81633c1775645b3ca40da)
Co-authored-by: Serhiy Storchaka <storchaka at gmail.com>
files:
M Lib/platform.py
M Lib/test/test_platform.py
diff --git a/Lib/platform.py b/Lib/platform.py
index c8e0476bfb21..4205abde0388 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -136,6 +136,35 @@
# Constant used by test_platform to test linux_distribution().
_UNIXCONFDIR = '/etc'
+# Helper for comparing two version number strings.
+# Based on the description of the PHP's version_compare():
+# http://php.net/manual/en/function.version-compare.php
+
+_ver_stages = {
+ # any string not found in this dict, will get 0 assigned
+ 'dev': 10,
+ 'alpha': 20, 'a': 20,
+ 'beta': 30, 'b': 30,
+ 'c': 40,
+ 'RC': 50, 'rc': 50,
+ # number, will get 100 assigned
+ 'pl': 200, 'p': 200,
+}
+
+_component_re = re.compile(r'([0-9]+|[._+-])')
+
+def _comparable_version(version):
+ result = []
+ for v in _component_re.split(version):
+ if v not in '._+-':
+ try:
+ v = int(v, 10)
+ t = 100
+ except ValueError:
+ t = _ver_stages.get(v, 0)
+ result.extend((t, v))
+ return result
+
### Platform specific APIs
_libc_search = re.compile(b'(__libc_init)'
@@ -159,7 +188,7 @@ def libc_ver(executable=sys.executable, lib='', version='', chunksize=16384):
The file is read and scanned in chunks of chunksize bytes.
"""
- from distutils.version import LooseVersion as V
+ V = _comparable_version
if hasattr(os.path, 'realpath'):
# Python 2.2 introduced os.path.realpath(); it is used
# here to work around problems with Cygwin not being
diff --git a/Lib/test/test_platform.py b/Lib/test/test_platform.py
index afc4de326907..c8ba7ec35947 100644
--- a/Lib/test/test_platform.py
+++ b/Lib/test/test_platform.py
@@ -285,6 +285,42 @@ def test_libc_ver(self):
self.assertEqual(platform.libc_ver(support.TESTFN),
('glibc', '1.23.4'))
+ @support.cpython_only
+ def test__comparable_version(self):
+ from platform import _comparable_version as V
+ self.assertEqual(V('1.2.3'), V('1.2.3'))
+ self.assertLess(V('1.2.3'), V('1.2.10'))
+ self.assertEqual(V('1.2.3.4'), V('1_2-3+4'))
+ self.assertLess(V('1.2spam'), V('1.2dev'))
+ self.assertLess(V('1.2dev'), V('1.2alpha'))
+ self.assertLess(V('1.2dev'), V('1.2a'))
+ self.assertLess(V('1.2alpha'), V('1.2beta'))
+ self.assertLess(V('1.2a'), V('1.2b'))
+ self.assertLess(V('1.2beta'), V('1.2c'))
+ self.assertLess(V('1.2b'), V('1.2c'))
+ self.assertLess(V('1.2c'), V('1.2RC'))
+ self.assertLess(V('1.2c'), V('1.2rc'))
+ self.assertLess(V('1.2RC'), V('1.2.0'))
+ self.assertLess(V('1.2rc'), V('1.2.0'))
+ self.assertLess(V('1.2.0'), V('1.2pl'))
+ self.assertLess(V('1.2.0'), V('1.2p'))
+
+ self.assertLess(V('1.5.1'), V('1.5.2b2'))
+ self.assertLess(V('3.10a'), V('161'))
+ self.assertEqual(V('8.02'), V('8.02'))
+ self.assertLess(V('3.4j'), V('1996.07.12'))
+ self.assertLess(V('3.1.1.6'), V('3.2.pl0'))
+ self.assertLess(V('2g6'), V('11g'))
+ self.assertLess(V('0.9'), V('2.2'))
+ self.assertLess(V('1.2'), V('1.2.1'))
+ self.assertLess(V('1.1'), V('1.2.2'))
+ self.assertLess(V('1.1'), V('1.2'))
+ self.assertLess(V('1.2.1'), V('1.2.2'))
+ self.assertLess(V('1.2'), V('1.2.2'))
+ self.assertLess(V('0.4'), V('0.4.0'))
+ self.assertLess(V('1.13++'), V('5.5.kw'))
+ self.assertLess(V('0.960923'), V('2.2beta29'))
+
def test_parse_release_file(self):
for input, output in (
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