Simplify High-scores exercise. Replace Class with functions (#1764)

* Simplify High-scores exercise. Replace Class with functions
Exercise text edited.
Tests made to expect functions. One test removed, cause was no longer valid.
Make new example.py using functions.
Add the functions as starting point in the exercise file. (This also make the tests not complain of missing imports and such.)
Added __init__.py to the package for the people that still run 2.7+
Added pytest cache to gitignore file

* Fix style problems

* Made requested changes in PR
Remove __init__.py
Remove content of HINTS.md
Generate the README.md
Remove the comments in stub file

* Add new hints to high-score

Added hints for some docs around list and tuples - thanks @BethanyG for that

Moved original hints for classes in matrix ( cause is the next exercise for now which use class)
slightly edited to not refer to high-score

Regenerate both README.md

* Remove changes to matrix from this PR

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

Co-Authored-By: simmol <simmol@users.noreply.github.com>

* Update exercises/matrix/README.md

Co-Authored-By: simmol <simmol@users.noreply.github.com>

* Regenerate README

.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. 
+- [**Data Structures (Python 3 Documentation Tutorial)**](https://docs.python.org/3/tutorial/datastructures.html)
--   [**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.  
+- [**Lists and Tuples in Python (Real Python)**](https://realpython.com/python-lists-tuples/)
--   [**Data Structures in Python**](https://docs.python.org/3/tutorial/datastructures.html) from the Python 3 documentation.
+- [**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. 
+- [**Data Structures (Python 3 Documentation Tutorial)**](https://docs.python.org/3/tutorial/datastructures.html)
--   [**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.  
+- [**Lists and Tuples in Python (Real Python)**](https://realpython.com/python-lists-tuples/)
--   [**Data Structures in Python**](https://docs.python.org/3/tutorial/datastructures.html) from the Python 3 documentation.
+- [**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 latest(scores):
-    def __init__(self, scores):
+    return scores[-1]
-        self.scores = scores
 
-    def latest(self):
-        return self.scores[-1]
 
-    def personal_best(self):
+def personal_best(scores):
-        return max(self.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 latest(scores):
-    def __init__(self, scores):
+    pass
-        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__":