Adjust making-the-grade to return list type

Author: pranasziaukas

exercises/concept/making-the-grade/.docs/hints.md

@@ -44,8 +44,8 @@ Also being familiar with the following can help with completing the tasks:
 
 ## 6. A "Perfect" Score
 
-- There may be or may not be a student with a score of 100, and you can't return "No perfect score." without checking **all** scores.
-- The [`control flow`][control flow] statements `continue` and `break`break may be useful here to move past unwanted values.
+- There may be or may not be a student with a score of 100, and you can't return `[]` without checking **all** scores.
+- The [`control flow`][control flow] statements `continue` and `break` may be useful here to move past unwanted values.
 
 [list]: https://docs.python.org/3/library/stdtypes.html#list
 [str]: https://docs.python.org/3/library/stdtypes.html#str

exercises/concept/making-the-grade/.docs/instructions.md

@@ -93,14 +93,14 @@ Create the function `perfect_score()` with parameter `student_info`.
 `student_info` is a `list` of lists containing the name and score of each student: `[["Charles", 90], ["Tony", 80]]`.
 The function should `return` _the first_ `[<name>, <score>]` pair of the student who scored 100 on the exam.
 
- If no 100 scores are found in `student_info`, the string "No perfect score." should be returned.
+ If no 100 scores are found in `student_info`, an empty list `[]` should be returned.
 
 ```python
 >>> perfect_score(student_info=[["Charles", 90], ["Tony", 80], ["Alex", 100]])
 ["Alex", 100]
 
 >>> perfect_score(student_info=[["Charles", 90], ["Tony", 80]])
-"No perfect score."
+[]
 ```
 
 [round]: https://docs.python.org/3/library/functions.html#round

exercises/concept/making-the-grade/.meta/exemplar.py

@@ -69,10 +69,10 @@ def student_ranking(student_scores, student_names):
 def perfect_score(student_info):
     """
     :param student_info: list of [<student name>, <score>] lists
-    :return: First [<student name>, 100] found OR "No perfect score."
+    :return: first `[<student name>, 100]` or `[]` if no student score of 100 is found.
     """
 
-    result = "No perfect score."
+    result = []
 
     for item in student_info:
         if item[1] == 100:

exercises/concept/making-the-grade/loops.py

@@ -48,6 +48,6 @@ def student_ranking(student_scores, student_names):
 def perfect_score(student_info):
     """
     :param student_info: list of [<student name>, <score>] lists
-    :return: First [<student name>, 100] found OR "No perfect score."
+    :return: first `[<student name>, 100]` or `[]` if no student score of 100 is found.
     """
     pass

exercises/concept/making-the-grade/loops_test.py

@@ -87,11 +87,11 @@ def test_student_ranking(self):
     def test_perfect_score(self):
         data = [
             ([['Joci', 100], ['Vlad', 100], ['Raiana', 100], ['Alessandro', 100]], ['Joci', 100]),
-            ([['Jill', 30], ['Paul', 73], ], 'No perfect score.'),
-            ([], 'No perfect score.'),
+            ([['Jill', 30], ['Paul', 73], ], []),
+            ([], []),
             (
                 [['Rui', 60], ['Joci', 58], ['Sara', 91], ['Kora', 93], ['Alex', 42],
-                 ['Jan', 81], ['Lilliana', 40], ['John', 60], ['Bern', 28], ['Vlad', 55]], 'No perfect score.'),
+                 ['Jan', 81], ['Lilliana', 40], ['John', 60], ['Bern', 28], ['Vlad', 55]], []),
             (
                 [['Yoshi', 52], ['Jan', 86], ['Raiana', 100], ['Betty', 60],
                  ['Joci', 100], ['Kora', 81], ['Bern', 41], ['Rose', 94]], ['Raiana', 100])]