bpo-35872 and bpo-35873: Clears __PYVENV_LAUNCHER__ variable (GH-11745)

After reading __PYVENV_LAUNCHER__ we now set sys._base_executable value for later use.
Make the same changes for macOS to avoid extra platform checks.

1 files changed, 2 insertions, 9 deletions

diff --git a/Lib/test/test_venv.py b/Lib/test/test_venv.py
index 6096b9d..347544a 100644
--- a/Lib/test/test_venv.py
+++ b/Lib/test/test_venv.py
@@ -52,10 +52,7 @@ class BaseTest(unittest.TestCase):
             self.bindir = 'bin'
             self.lib = ('lib', 'python%d.%d' % sys.version_info[:2])
             self.include = 'include'
-        if sys.platform == 'darwin' and '__PYVENV_LAUNCHER__' in os.environ:
-            executable = os.environ['__PYVENV_LAUNCHER__']
-        else:
-            executable = sys.executable
+        executable = getattr(sys, '_base_executable', sys.executable)
         self.exe = os.path.split(executable)[-1]
 
     def tearDown(self):
@@ -100,11 +97,7 @@ class BasicTest(BaseTest):
         else:
             self.assertFalse(os.path.exists(p))
         data = self.get_text_file_contents('pyvenv.cfg')
-        if sys.platform == 'darwin' and ('__PYVENV_LAUNCHER__'
-                                         in os.environ):
-            executable =  os.environ['__PYVENV_LAUNCHER__']
-        else:
-            executable = sys.executable
+        executable = getattr(sys, '_base_executable', sys.executable)
         path = os.path.dirname(executable)
         self.assertIn('home = %s' % path, data)
         fn = self.get_env_file(self.bindir, self.exe)