diff --git a/odoo/addons/base/tests/test_cloc.py b/odoo/addons/base/tests/test_cloc.py
index 4c87b3c735d..b6c115e9094 100644
--- a/odoo/addons/base/tests/test_cloc.py
+++ b/odoo/addons/base/tests/test_cloc.py
@@ -1,6 +1,4 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
-import sys
-
 from odoo.tools import cloc
 from odoo.tests import TransactionCase, tagged
 
@@ -241,7 +239,7 @@ class TestClocParser(TransactionCase):
         py_count = cl.parse_py(PY_TEST_NO_RETURN)
         self.assertEqual(py_count, (2, 2))
         py_count = cl.parse_py(PY_TEST)
-        if sys.version_info >= (3, 8, 0):
+        if self._python_version >= (3, 8, 0):
             # Multi line str lineno return the begining of the str
             # in python 3.8, it result in a different count for
             # multi str used in expressions
diff --git a/odoo/addons/base/tests/test_test_suite.py b/odoo/addons/base/tests/test_test_suite.py
index ae8f2e6b814..11af6076c94 100644
--- a/odoo/addons/base/tests/test_test_suite.py
+++ b/odoo/addons/base/tests/test_test_suite.py
@@ -4,7 +4,6 @@
 import difflib
 import logging
 import re
-import sys
 from contextlib import contextmanager
 from unittest import TestCase
 from unittest.mock import patch
@@ -312,7 +311,7 @@ Traceback (most recent call last):
     self.fail(msg % (login, count, expected, funcname, filename, linenum))
 AssertionError: Query count more than expected for user __system__: 1 > 0 in test_assertQueryCount at base/tests/test_test_suite.py:$line
 ''')
-        if sys.version_info < (3, 10, 0):
+        if self._python_version < (3, 10, 0):
             message = message.replace("with self.assertQueryCount(system=0):", "self.env.cr.execute('SELECT 1')")
 
         self.expected_logs = [
diff --git a/odoo/addons/test_lint/tests/test_pylint.py b/odoo/addons/test_lint/tests/test_pylint.py
index b41bf6578ae..b436b24e1f6 100644
--- a/odoo/addons/test_lint/tests/test_pylint.py
+++ b/odoo/addons/test_lint/tests/test_pylint.py
@@ -9,7 +9,6 @@ except ImportError:
 import subprocess
 import os
 from os.path import join
-import sys
 
 from odoo.tests.common import TransactionCase
 from odoo import tools
@@ -53,7 +52,7 @@ class TestPyLint(TransactionCase):
         if pylint is None:
             self._skip_test('please install pylint')
         required_pylint_version = tools.parse_version('1.6.4')
-        if sys.version_info >= (3, 6):
+        if self._python_version >= (3, 6):
             required_pylint_version = tools.parse_version('1.7.0')
         if tools.parse_version(getattr(pylint, '__version__', '0.0.1')) < required_pylint_version:
             self._skip_test('please upgrade pylint to >= %s' % required_pylint_version)
diff --git a/odoo/tests/common.py b/odoo/tests/common.py
index e16892c552e..ba52c2826a0 100644
--- a/odoo/tests/common.py
+++ b/odoo/tests/common.py
@@ -363,7 +363,9 @@ class BaseCase(unittest.TestCase, metaclass=MetaCase):
     """ Subclass of TestCase for Odoo-specific code. This class is abstract and
     expects self.registry, self.cr and self.uid to be initialized by subclasses.
     """
-    if sys.version_info < (3, 8):
+
+    _python_version = sys.version_info
+    if _python_version < (3, 8):
         # Partial backport of bpo-24412, merged in CPython 3.8
         _class_cleanups = []