user outepu

subject.py

@@ -14,13 +14,13 @@ class Subject:
     def add_grade(self, category, grade):
         self.grades[category][0].append(grade)
 
-    def return_grades(self, category):
+    def return_grades(self, category):  # Return all grades in one category
         return self.grades[category][0]
 
-    def return_grade_categories(self):
+    def return_grade_categories(self):  # Return all categories
         return [i for i in self.grades]
 
-    def return_average_of_category(self, category):
+    def return_average_of_category(self, category):  # Return average of one categorie
         return sum(self.grades[category][0]) / len(self.grades[category][0])
 
     def return_average_of_subject(self):

user_IO.py

@@ -33,6 +33,10 @@ def user_input():
             return "input", "grade", subject, category, grade, grade_name
 
 
-def user_output(i):
-    # just filled with some standard output, has to be filled further
-    print(i)
+def user_output(subject, categories, average):
+    print("\n\n In the subject [] are the following categories:".format(subject))
+    for counter, category in enumerate(categories):
+        print("The average in [] is [] with these grades:".format(category, average[counter]))
+        for grade in category:
+            print(grade)
+        print("\n")