bpo-35877: Add test for while loop named expression without parentheses (GH-11726)

Author: emilyemorehouse

Lib/test/test_named_expressions.py

@@ -195,7 +195,7 @@ def test_named_expression_assignment_14(self):
  Where all variables are positive integers, and a is at least as large
  as the n'th root of x, this algorithm returns the floor of the n'th
  root of x (and roughly doubling the number of accurate bits per
- iteration)::
+ iteration):
  """
  a = 9
  n = 2
@@ -206,6 +206,12 @@ def test_named_expression_assignment_14(self):
 
  self.assertEqual(a, 1)
 
+ def test_named_expression_assignment_15(self):
+ while a := False:
+ pass # This will not run
+
+ self.assertEqual(a, False)
+
 
 class NamedExpressionScopeTest(unittest.TestCase):