fix: use correct method for list comparing (#4)

`assertAlmostEqual` is able to determine if lists are equal, but it cannot
determine if corresponding elements are almost equal. `assertCountEqual`
checks if lists have the same elements, regardless of the order.

test_module.py

@@ -8,8 +8,8 @@ class DemographicAnalyzerTestCase(unittest.TestCase):
     def test_race_count(self):
         actual = self.data['race_count'].tolist()
         expected = [27816, 3124, 1039, 311, 271]
-        self.assertAlmostEqual(actual, expected, msg="Expected race count values to be [27816, 3124, 1039, 311, 271]")
-    
+        self.assertCountEqual(actual, expected, msg="Expected race count values to be [27816, 3124, 1039, 311, 271]")
+
     def test_average_age_men(self):
         actual = self.data['average_age_men']
         expected = 39.4