My Solution:

if name == 'main': nested = [] n = range(int(input())) for _ in n: name = input() score = float(input()) nested.append([name, score]) sorted_nest = sorted(nested, key=lambda x: x[1])

s, l = min(sorted_nest, key = lambda x: x[1])
sll = [
    student for student in sorted_nest if student[1] != l 
]


e, m = min(sll, key = lambda x: x[1])

second_lowest = [
    student for student in sll if student[1] == m
]
sl = sorted(second_lowest, key= lambda x : x[0])

for student in sl: 
    print(student[0])

My Solution:

if __name__ == '__main__':
    records = []
    grades = []
    for _ in range(int(input())):
        name = input()
        score = float(input())
        
        records.append([name, score])
        grades.append(score)
     
    unique_grades = sorted(list(set(grades)))
    second_lowest_grade = unique_grades[1]
    names = []
    for name, score in records:
        if score == second_lowest_grade:
            names.append(name)
    for name in sorted(names):
        print(name)

My solution:

if __name__ == '__main__':
    scores = []
    record = {}
    for _ in range(int(input())):
        name = input()
        score = float(input())
        record[name] = score
        scores.append(score)
    runner = sorted(set(scores))[1]
    names = [k for k,v in record.items() if v == runner]
    for n in sorted(names):
        print(n)

if name == 'main': grades = [] for _ in range(int(input())): name = input() score = float(input()) grades.append([name, score])

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

# find second lowest score - could be more that one lowest scores
lowest_score = grades[0][1]
second_lowest_score = lowest_score
for grade in grades:
    second_lowest_score = grade[1]
    if second_lowest_score > lowest_score:
        break

# print students with second lowest score
# find second lowest score
slg_students = []
for grade in grades:
    if second_lowest_score == grade[1]:
        slg_students.append(grade[0])

slg_students.sort()
for student in slg_students:
    print(student)

def sort_student(name_score): score=[] for student in name_score: score.append(student[1])

sorted_score= sorted(set(score))
second_lowest = sorted_score[1]

names_second_lowest=[]
for student in name_score:
    if  student[1]==second_lowest:
        names_second_lowest.append(student[0])
names_second_lowest= sorted(names_second_lowest)

for name in names_second_lowest:
    print(name)

if name == 'main': name_score = [] for _ in range(int(input())): name = input() score = float(input()) name_score.append([name,score])

sort_student(name_score)