gh-73965: New environment variable PYTHON_HISTORY (#13208)

It can be used to set the location of a .python_history file

---------

Co-authored-by: Levi Sabah <0xl3vi@gmail.com>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
index 9f199d9..e26b48e 100644
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -7,6 +7,7 @@ executing have not been removed.
 import unittest
 import test.support
 from test import support
+from test.support.script_helper import assert_python_ok
 from test.support import os_helper
 from test.support import socket_helper
 from test.support import captured_stderr
@@ -338,6 +339,19 @@ class HelperFunctionsTests(unittest.TestCase):
             mock_addsitedir.assert_not_called()
             self.assertFalse(known_paths)
 
+    def test_gethistoryfile(self):
+        filename = 'file'
+        rc, out, err = assert_python_ok('-c',
+            f'import site; assert site.gethistoryfile() == "{filename}"',
+            PYTHON_HISTORY=filename)
+        self.assertEqual(rc, 0)
+
+        # Check that PYTHON_HISTORY is ignored in isolated mode.
+        rc, out, err = assert_python_ok('-I', '-c',
+            f'import site; assert site.gethistoryfile() != "{filename}"',
+            PYTHON_HISTORY=filename)
+        self.assertEqual(rc, 0)
+
     def test_trace(self):
         message = "bla-bla-bla"
         for verbose, out in (True, message + "\n"), (False, ""):