Collections.namedtuple() HackerRank Solution In Python

Problem

collections.namedtuple()

Basically, namedtuples are easy to create, lightweight object types.

They turn tuples into convenient containers for simple tasks.
With namedtuples, you don’t have to use integer indices for accessing members of a tuple.

Example

Code 01
>>> from collections import namedtuple>>> Point = namedtuple('Point','x,y')>>> pt1 = Point(1,2)>>> pt2 = Point(3,4)>>> dot_product = ( pt1.x * pt2.x ) +( pt1.y * pt2.y )>>> print dot_product11
Code 02
>>> from collections import namedtuple>>> Car = namedtuple('Car','Price Mileage Colour Class')>>> xyz = Car(Price = 100000, Mileage = 30, Colour = 'Cyan', Class = 'Y')>>> print xyzCar(Price=100000, Mileage=30, Colour='Cyan', Class='Y')>>> print xyz.ClassY

Task

Dr. John Wesley has a spreadsheet containing a list of student’s IDsmarksclass and name.

Your task is to help Dr. Wesley calculate the average marks of the students.

Note:

  1. Columns can be in any order. IDs, marks, class and name can be written in any order in the spreadsheet.
  2. Column names are IDMARKSCLASS and NAME. (The spelling and case type of these names won’t change.)

Input Format

The first line contains an integer N, the total number of students.
The second line contains the names of the columns in any order.
The next N lines contains the marksIDsname and class, under their respective column names.

Constraints

0 < N ≤ 100

Output Format

Print the average marks of the list corrected to 2 decimal places.

Sample Input

Testcae 01
5ID         MARKS      NAME       CLASS     1          97         Raymond    7         2          50         Steven     4         3          91         Adrian     9         4          72         Stewart    5         5          80         Peter      6   
TESTCASE 02
5MARKS      CLASS      NAME       ID        92         2          Calum      1         82         5          Scott      2         94         2          Jason      3         55         8          Glenn      4         82         2          Fergus     5

Sample Output

TESTCASE 01
78.00
TESTCASE 02
81.00

Explanation

TESTCASE 01

Average = (97 + 50 + 91 + 72 + 80)/5

Can you solve this challenge in 4 lines of code or less?
NOTE: There is no penalty for solutions that are correct but have more than 4 lines

Solution – Collections.namedtuple() In Python

n = int(input())cols = input().split()details = [input().split() for _ in range(n)]mark = cols.index("MARKS")sum = 0for i in details:    sum += int(i[mark])    print(round(sum/n, 2))

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