message: Use list.clear for testing
  Summary: list.copy is not part of the standard - this was just one randomly chosen function on list, so pick a different one.
diff: @@ -969,9 +969,9 @@ range(4) != [0,1,2,3,4]
  {1: 2, 3: 4} == {3: 4, 1: 2} # Spec is a little ambiguous here
  repr == repr
  repr != str
  -[].copy != [1].copy
  -x = []; x.copy != x.copy
  -x = []; y = x.copy; y == y
  +[].clear != [1].clear
  +x = []; x.clear != x.clear
  +x = []; y = x.clear; y == y
  x = repr; y = repr; x == y
  "#,
  );
  