i'm getting error in test cases 2 and 3 please help

n = int(input()) students = [] for i in range(n): name = input() grade = float(input()) students.append([name, grade])

sort the list based on grades

students.sort(key=lambda x: x[1])

sort the list of students based on their names

students.sort(key=lambda x: x[0])

find the second lowest grade

[1] at end is used to access the second element of the nested list

second_lowest_grade = sorted([s[1] for s in students])[1]

print names of students with the second lowest grade

for student in students: if student[1] == second_lowest_grade: print(student[0])