revert "issue 258 fix"

movies/__init__.py

@@ -125,7 +125,6 @@ def test9():
             "Rupert Grint",
             "Daniel Radcliffe",
             "Emma Watson",
-            "Emma Watson",
         ],
         ordered=True,
     )
@@ -222,17 +221,14 @@ def check_single_col(actual, expected, ordered=False):
     # Get data from column
     try:
         result = [str(list(row.values())[0]) for row in actual]
+        result = result if ordered else set(result)
     except IndexError:
         return None
 
     # Check column data against expected values
     expected = [str(value) for value in expected]
-
-    # If unordered, sort both before checking
     if not ordered:
-        result.sort()
-        expected.sort()
-
+        expected = set(expected)
     if result != expected:
         raise check50.Mismatch("\n".join(expected), "\n".join(list(result)))