fixes after review

Author: despadam

tutorial/quiz/object_oriented_programming_advanced.py

@@ -148,19 +148,6 @@ def __init__(self, title=""):
         )
 
         q5 = Question(
-            question="Which decorator is used to define a method that belongs to the class rather than an instance?",
-            options={
-                "@staticmethod": "Incorrect. A static method does not belong to the class or instance.",
-                "@classmethod": "Correct! A class method belongs to the class and takes `cls` as its first parameter.",
-                "@property": "Incorrect. The `@property` decorator is used to define getter methods.",
-                "@abstractmethod": "Incorrect. The `@abstractmethod` decorator is used in abstract classes.",
-            },
-            correct_answer="@classmethod",
-            hint="This method takes `cls` as its first parameter.",
-            shuffle=True,
-        )
-
-        q6 = Question(
             question="What is the purpose of the `@classmethod` decorator?",
             options={
                 "To define a method that belongs to the class rather than an instance": "Correct! A class method belongs to the class and takes `cls` as its first parameter.",
@@ -173,7 +160,7 @@ def __init__(self, title=""):
             shuffle=True,
         )
 
-        q7 = Question(
+        q6 = Question(
             question="What is the difference between `@staticmethod` and `@classmethod`?",
             options={
                 "`@staticmethod` does not access the class or instance, while `@classmethod` takes `cls` as its first parameter": "Correct! This is the key difference between the two decorators.",
@@ -186,7 +173,7 @@ def __init__(self, title=""):
             shuffle=True,
         )
 
-        super().__init__(questions=[q1, q2, q3, q4, q5, q6, q7])
+        super().__init__(questions=[q1, q2, q3, q4, q5, q6])
 
 
 class OopAdvancedEncapsulation(Quiz):

tutorial/tests/test_13_object_oriented_programming_advanced.py

@@ -61,8 +61,16 @@ def validate_child_eye_color(solution_result):
         attrs = list(vars(solution_result))
     except TypeError:
         raise SubAssertionError from None
-    assert len(attrs) == 1, "The class should have 1 attribute."
-    assert "eye_color" in attrs, "The class attribute should be 'eye_color'."
+    assert len(attrs) == 3, "The class should have 3 attributes."
+    assert "eye_color" in attrs, (
+        "The class should have an attribute called 'eye_color'."
+    )
+    assert "eye_color_mother" in attrs, (
+        "The class should have an attribute called 'eye_color_mother'."
+    )
+    assert "eye_color_father" in attrs, (
+        "The class should have an attribute called 'eye_color_father'."
+    )
 
 
 @pytest.mark.parametrize(