Updated python code

Author: ImAkshayad

hackerrank/python/basic_data_types/finding_the_percentage.py

@@ -6,6 +6,8 @@
         scores = list(map(float, line))
         student_marks[name] = scores
     query_name = input()
+    # Get the marks list of the queried student name
     score_list = student_marks.get(query_name)
+    #Calculating average
     average = sum(score_list)/len(score_list)
     print('{:.2f}'.format(average))

hackerrank/python/basic_data_types/list_comprehensions.py

@@ -3,5 +3,6 @@
     y = int(input())
     z = int(input())
     n = int(input())
+    # Using list comprehension to find all permutations of x,y,z values whose sum is not equal to n
     permutation_list = [[a,b,c] for a in range(x+1) for b in range(y+1) for c in range(z+1) if (a+b+c) != n]
     print(permutation_list)

hackerrank/python/basic_data_types/runner_up_score.py

@@ -1,6 +1,8 @@
 if __name__ == '__main__':
     n = int(input())
     arr = map(int, input().split())
+    # Converting to set datatype to retain only unique values. Then, it's converted to list datatype to access through indices
     nums = list(set(arr))
     nums.sort()
+    # Get second last value of the list (Runner-up score)
     print(nums[-2])