bpo-42749: Use dynamic version to test for unsupported bignum in Tk (GH-23966)

serhiy-storchaka · web-flow · commit 156b7f705210 · 2020-12-29T12:55:55.000+02:00
Tk can internally support bignum even if Tkinter is built without
support of bignum.
diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
@@ -449,7 +449,7 @@ def test_expr_bignum(self):
             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):
