Remove references to 'sys.version_info'

We support Python 3.6 as a minimum now, making these checks no-ops.

Change-Id: Ia183dc2f19bf08635fb830d603f2bed888765ef6

oslo_utils/fnmatch.py

@@ -12,74 +12,21 @@
 
 """Thread safe fnmatch re-implementation.
 
-Standard library fnmatch in Python versions <= 2.7.9 has thread safe
-issue, this module is created for such case. see:
-https://bugs.python.org/issue23191
-
 .. versionadded:: 3.3
 """
 
 import fnmatch as standard_fnmatch
-import os
-import posixpath
-import re
-import sys
 import warnings
 
 import debtcollector
 
 warnings.simplefilter("always")
 debtcollector.deprecate(
-    "Using the oslo.utils's 'fnmatch' module is deprecate, "
-    "please use the stdlib `fnmatch` module."
+    "Using the oslo.utils's 'fnmatch' module is deprecated, "
+    "please use the stdlib 'fnmatch' module."
 )
 
-
-if sys.version_info > (2, 7, 9):
-    fnmatch = standard_fnmatch.fnmatch
-    fnmatchcase = standard_fnmatch.fnmatchcase
-    filter = standard_fnmatch.filter
-    translate = standard_fnmatch.translate
-else:
-    _MATCH_CACHE = {}
-    _MATCH_CACHE_MAX = 100
-
-    translate = standard_fnmatch.translate
-
-    def _get_cached_pattern(pattern):
-        cached_pattern = _MATCH_CACHE.get(pattern)
-        if cached_pattern is None:
-            translated_pattern = translate(pattern)
-            cached_pattern = re.compile(translated_pattern)
-            if len(_MATCH_CACHE) >= _MATCH_CACHE_MAX:
-                _MATCH_CACHE.clear()
-            _MATCH_CACHE[pattern] = cached_pattern
-        return cached_pattern
-
-    def fnmatchcase(filename, pattern):
-        cached_pattern = _get_cached_pattern(pattern)
-        return cached_pattern.match(filename) is not None
-
-    def fnmatch(filename, pattern):
-        filename = os.path.normcase(filename)
-        pattern = os.path.normcase(pattern)
-        return fnmatchcase(filename, pattern)
-
-    def filter(filenames, pattern):
-        filtered_filenames = []
-
-        pattern = os.path.normcase(pattern)
-        cached_pattern = _get_cached_pattern(pattern)
-
-        if os.path is posixpath:
-            # normcase on posix is NOP. Optimize it away from the loop.
-            for filename in filenames:
-                if cached_pattern.match(filename):
-                    filtered_filenames.append(filename)
-        else:
-            for filename in filenames:
-                norm_name = os.path.normcase(filename)
-                if cached_pattern.match(norm_name):
-                    filtered_filenames.append(filename)
-
-        return filtered_filenames
+fnmatch = standard_fnmatch.fnmatch
+fnmatchcase = standard_fnmatch.fnmatchcase
+filter = standard_fnmatch.filter
+translate = standard_fnmatch.translate

oslo_utils/tests/test_fnmatch.py

@@ -1,48 +0,0 @@
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-
-import fnmatch as standard_fnmatch
-import ntpath
-import posixpath
-from unittest import mock
-
-from oslotest import base
-
-
-fnmatch = None
-
-
-class TestFnmatch(base.BaseTestCase):
-
-    def _test_fnmatch(self):
-        self.assertFalse(fnmatch.fnmatch("tesX", "Test"))
-        self.assertTrue(fnmatch.fnmatch("test", "test"))
-        self.assertFalse(fnmatch.fnmatchcase("test", "Test"))
-        self.assertTrue(fnmatch.fnmatchcase("test", "test"))
-        self.assertTrue(fnmatch.fnmatch("testX", "test*"))
-        self.assertEqual(["Test"], fnmatch.filter(["Test", "TestX"], "Test"))
-
-    def _test_fnmatch_posix_nt(self):
-        with mock.patch("os.path", new=posixpath):
-            self.assertFalse(fnmatch.fnmatch("test", "Test"))
-            self._test_fnmatch()
-        with mock.patch("os.path", new=ntpath):
-            self._test_fnmatch()
-            self.assertTrue(fnmatch.fnmatch("test", "Test"))
-            self.assertEqual(["Test"],
-                             fnmatch.filter(["Test", "TestX"], "test"))
-
-    def test_fnmatch(self):
-        global fnmatch
-
-        fnmatch = standard_fnmatch
-        self._test_fnmatch_posix_nt()