From 156b7f7052102ee1633a18e9a136ad8c38f66db0 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Tue, 29 Dec 2020 12:55:55 +0200
Subject: [PATCH] bpo-42749: Use dynamic version to test for unsupported bignum
 in Tk (GH-23966)

Tk can internally support bignum even if Tkinter is built without
support of bignum.
---
 Lib/test/test_tcl.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
index 5bc4f9bda17..ee7344c48ed 100644
--- a/Lib/test/test_tcl.py
+++ b/Lib/test/test_tcl.py
@@ -449,7 +449,7 @@ class TclTest(unittest.TestCase):
             else:
                 self.assertEqual(result, str(i))
                 self.assertIsInstance(result, str)
-        if tcl_version < (8, 5):  # bignum was added in Tcl 8.5
+        if get_tk_patchlevel() < (8, 5):  # bignum was added in Tcl 8.5
             self.assertRaises(TclError, tcl.call, 'expr', str(2**1000))
 
     def test_passing_values(self):