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  1. Prepare
  2. Python
  3. Collections
  4. Collections.namedtuple()
  5. Discussions

Collections.namedtuple()

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  • AndreLie95
     + 0 comments
    from collections import defaultdict
n = int(input())
k = defaultdict(list)
header = list(map(str, input().split()))

listed = []
for x in range(n):
    listed.append(list(input().split()))

for i, j in enumerate(header):
    for x in range(n):
        if (listed[x][i]).isnumeric():
            k[j].append(int(listed[x][i]))
        else:
            k[j].append(listed[x][i])

print(f'{(sum(k.get('MARKS'))/n):.2f}')

    this works even they change colomn order

  • dineshnampalli21
     + 0 comments

    total_students, columns = int(input()), input().split() marks = sum(int(input().split()[columns.index('MARKS')]) for _ in range(total_students)) print(f"{marks / total_students:.2f}")

  • karan9695224105
     + 0 comments

    from collections import namedtuple import statistics

    n,student=int(input()),namedtuple("student",input().split())

    print(statistics.mean(int(student(*(input().split())).MARKS) for _ in range(n)))

  • rinehartm3
     + 0 comments

    2 lines w/o namedtuple

    iternum, header = int(input()), input().split() print(f'{sum(int(input().split()[header.index("MARKS")]) for _ in range(iternum)) / iternum:.2f}')

  • Strolate
     + 0 comments
    from collections import namedtuple
import statistics

if __name__ == '__main__':
    total_students,studnet = int(input()),namedtuple('studnet', list(map(str,input().split())))
    print(f'{statistics.mean([int(studnet(*(input().split())).MARKS) for _ in range(total_students)]):.2f}')