python · jdevries3133 · Dec 17, 2018 · Dec 18, 2018 · Dec 18, 2018 · Jul 22, 2021
diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
@@ -175,7 +175,7 @@ def _is_subtype(expected, basetype):
 def _heuristic_diff(a: list[str], b: list[str]) -> Iterator[str]:
     """After testing the magnitude of the inputs, preferably return the output
     of difflib.ndiff, but fallback to difflib.unified_diff for prohibitively
-    expensive inputs.
+    expensive inputs. How cost is calculated:
 
     Cost is calculated according to this heuristic:
 

diff --git a/Misc/NEWS.d/next/Library/2021-07-21-22-57-51.bpo-19217.vm-cr-.rst b/Misc/NEWS.d/next/Library/2021-07-21-22-57-51.bpo-19217.vm-cr-.rst
@@ -1,2 +1,2 @@
-Optimize unittest.TestCase.assertEqual method for long sequences of varied
+Optimize :meth:`~unittest.TestCase.assertEqual` method for long sequences of varied
 items.