Simplify High-scores exercise. Replace Class with functions

.gitignore

@@ -8,4 +8,5 @@ bin/configlet
 bin/configlet.exe
 .idea/
 .cache
+.pytest_cache
 __pycache__

exercises/high-scores/.meta/HINTS.md

@@ -1,5 +1,5 @@
-In this exercise you're going to create a **class** and use lists to organize scores.  _Don't worry, it's not as complicated as you think!_ 
+In this exercise, you're going to use and manipulate lists. Python lists are very versatile, and you'll find yourself using them again and again in problems both simple and complex.
 
--   [**A First Look at Classes**](https://docs.python.org/3/tutorial/classes.html#a-first-look-at-classes) from the Python 3 documentation. 
--   [**How to Define a Class in Python**](https://realpython.com/python3-object-oriented-programming/#how-to-define-a-class-in-python) from the Real Python website.  
--   [**Data Structures in Python**](https://docs.python.org/3/tutorial/datastructures.html) from the Python 3 documentation.
+- [**Data Structures (Python 3 Documentation Tutorial)**](https://docs.python.org/3/tutorial/datastructures.html)
+- [**Lists and Tuples in Python (Real Python)**](https://realpython.com/python-lists-tuples/)
+- [**Python Lists (Google for Education)**](https://developers.google.com/edu/python/lists)

exercises/high-scores/README.md

@@ -4,11 +4,11 @@ Manage a game player's High Score list.
 
 Your task is to build a high-score component of the classic Frogger game, one of the highest selling and addictive games of all time, and a classic of the arcade era. Your task is to write methods that return the highest score from the list, the last added score and the three highest scores.
 
-In this exercise you're going to create a **class** and use lists to organize scores.  _Don't worry, it's not as complicated as you think!_ 
+In this exercise, you're going to use and manipulate lists. Python lists are very versatile, and you'll find yourself using them again and again in problems both simple and complex.
 
--   [**A First Look at Classes**](https://docs.python.org/3/tutorial/classes.html#a-first-look-at-classes) from the Python 3 documentation. 
--   [**How to Define a Class in Python**](https://realpython.com/python3-object-oriented-programming/#how-to-define-a-class-in-python) from the Real Python website.  
--   [**Data Structures in Python**](https://docs.python.org/3/tutorial/datastructures.html) from the Python 3 documentation.
+- [**Data Structures (Python 3 Documentation Tutorial)**](https://docs.python.org/3/tutorial/datastructures.html)
+- [**Lists and Tuples in Python (Real Python)**](https://realpython.com/python-lists-tuples/)
+- [**Python Lists (Google for Education)**](https://developers.google.com/edu/python/lists)
 
 
 

exercises/high-scores/example.py

@@ -1,12 +1,10 @@
-class HighScores(object):
-    def __init__(self, scores):
-        self.scores = scores
+def latest(scores):
+    return scores[-1]
 
-    def latest(self):
-        return self.scores[-1]
 
-    def personal_best(self):
-        return max(self.scores)
+def personal_best(scores):
+    return max(scores)
 
-    def personal_top_three(self):
-        return sorted(self.scores, reverse=True)[:3]
+
+def personal_top_three(scores):
+    return sorted(scores, reverse=True)[:3]

exercises/high-scores/high_scores.py

@@ -1,3 +1,10 @@
-class HighScores(object):
-    def __init__(self, scores):
-        pass
+def latest(scores):
+    pass
+
+
+def personal_best(scores):
+    pass
+
+
+def personal_top_three(scores):
+    pass

exercises/high-scores/high_scores_test.py

@@ -1,51 +1,47 @@
 import unittest
 
-from high_scores import HighScores
+from high_scores import latest, personal_best, personal_top_three
 
 
 # Tests adapted from `problem-specifications//canonical-data.json` @ v4.0.0
 
 
 class HighScoreTest(unittest.TestCase):
-    def test_list_of_scores(self):
-        scores = [30, 50, 20, 70]
-        expected = [30, 50, 20, 70]
-        self.assertEqual(HighScores(scores).scores, expected)
 
     def test_latest_score(self):
         scores = [100, 0, 90, 30]
         expected = 30
-        self.assertEqual(HighScores(scores).latest(), expected)
+        self.assertEqual(latest(scores), expected)
 
     def test_personal_best(self):
         scores = [40, 100, 70]
         expected = 100
-        self.assertEqual(HighScores(scores).personal_best(), expected)
+        self.assertEqual(personal_best(scores), expected)
 
     def test_personal_top_three_from_a_long_list(self):
         scores = [10, 30, 90, 30, 100, 20, 10, 0, 30, 40, 40, 70, 70]
         expected = [100, 90, 70]
-        self.assertEqual(HighScores(scores).personal_top_three(), expected)
+        self.assertEqual(personal_top_three(scores), expected)
 
     def test_personal_top_three_highest_to_lowest(self):
         scores = [20, 10, 30]
         expected = [30, 20, 10]
-        self.assertEqual(HighScores(scores).personal_top_three(), expected)
+        self.assertEqual(personal_top_three(scores), expected)
 
     def test_personal_top_three_when_there_is_a_tie(self):
         scores = [40, 20, 40, 30]
         expected = [40, 40, 30]
-        self.assertEqual(HighScores(scores).personal_top_three(), expected)
+        self.assertEqual(personal_top_three(scores), expected)
 
     def test_personal_top_three_when_there_are_less_than_3(self):
         scores = [30, 70]
         expected = [70, 30]
-        self.assertEqual(HighScores(scores).personal_top_three(), expected)
+        self.assertEqual(personal_top_three(scores), expected)
 
     def test_personal_top_three_when_there_is_only_one(self):
         scores = [40]
         expected = [40]
-        self.assertEqual(HighScores(scores).personal_top_three(), expected)
+        self.assertEqual(personal_top_three(scores), expected)
 
 
 if __name__ == "__main__":