address reviews

Author: skirpichev

Doc/library/decimal.rst

@@ -1035,6 +1035,8 @@ function to temporarily change the active context.
    IEEE interchange formats.  The argument must be a multiple of 32 and less
    than :const:`IEEE_CONTEXT_MAX_BITS`.
 
+   .. versionadded:: 3.14
+
 New contexts can also be created using the :class:`Context` constructor
 described below. In addition, the module provides three pre-made contexts:
 

Lib/test/test_decimal.py

@@ -4417,15 +4417,15 @@ def assert_rest(self, context):
         assert_rest(self, c)
 
         # Invalid values
-        self.assertRaises(OverflowError, IEEEContext, 2**63)
+        self.assertRaises(OverflowError, IEEEContext, sys.maxsize + 1)
         self.assertRaises(ValueError, IEEEContext, -1)
+        self.assertRaises(ValueError, IEEEContext, 123)
         self.assertRaises(ValueError, IEEEContext, 1024)
 
     def test_constants(self):
         # IEEEContext
         IEEE_CONTEXT_MAX_BITS = self.decimal.IEEE_CONTEXT_MAX_BITS
-        if IEEE_CONTEXT_MAX_BITS != 256:
-            self.assertEqual(IEEE_CONTEXT_MAX_BITS, 512)
+        self.assertIn(IEEE_CONTEXT_MAX_BITS, {256, 512})
 
 @requires_cdecimal
 class CIEEEContexts(IEEEContexts, unittest.TestCase):