Tupla con nombre en Python

Python admite un tipo de contenedor como los diccionarios llamado » namedtuple() » presente en el módulo, » colecciones «. Al igual que los diccionarios, contienen claves que se codifican en un valor particular. Pero por el contrario, admite tanto el acceso desde clave-valor como la iteración, la funcionalidad de la que carecen los diccionarios.

Ejemplo: 

# Python code to demonstrate namedtuple()
  
from collections import namedtuple
  
# Declaring namedtuple()
Student = namedtuple('Student', ['name', 'age', 'DOB'])
  
# Adding values
S = Student('Nandini', '19', '2541997')
  
# Access using index
print("The Student age using index is : ", end="")
print(S[1])
  
# Access using name
print("The Student name using keyname is : ", end="")
print(S.name)

# Python code to demonstrate namedtuple() and
# Access by name, index and getattr()
  
# importing "collections" for namedtuple()
import collections
  
# Declaring namedtuple()
Student = collections.namedtuple('Student', ['name', 'age', 'DOB'])
  
# Adding values
S = Student('Nandini', '19', '2541997')
  
# Access using index
print("The Student age using index is : ", end="")
print(S[1])
  
# Access using name
print("The Student name using keyname is : ", end="")
print(S.name)
  
# Access using getattr()
print("The Student DOB using getattr() is : ", end="")
print(getattr(S, 'DOB'))

# Python code to demonstrate namedtuple() and
# _make(), _asdict() and "**" operator
  
# importing "collections" for namedtuple()
import collections
  
# Declaring namedtuple()
Student = collections.namedtuple('Student',
                                 ['name', 'age', 'DOB'])
  
# Adding values
S = Student('Nandini', '19', '2541997')
  
# initializing iterable
li = ['Manjeet', '19', '411997']
  
# initializing dict
di = {'name': "Nikhil", 'age': 19, 'DOB': '1391997'}
  
# using _make() to return namedtuple()
print("The namedtuple instance using iterable is  : ")
print(Student._make(li))
  
# using _asdict() to return an OrderedDict()
print("The OrderedDict instance using namedtuple is  : ")
print(S._asdict())
  
# using ** operator to return namedtuple from dictionary
print("The namedtuple instance from dict is  : ")
print(Student(**di))

# Python code to demonstrate namedtuple() and
# _fields and _replace()
  
# importing "collections" for namedtuple()
import collections
  
# Declaring namedtuple()
Student = collections.namedtuple('Student', ['name', 'age', 'DOB'])
  
# Adding values
S = Student('Nandini', '19', '2541997')
  
# using _fields to display all the keynames of namedtuple()
print("All the fields of students are : ")
print(S._fields)
  
# ._replace returns a new namedtuple, it does not modify the original
print("returns a new namedtuple : ")
print(S._replace(name='Manjeet'))
# original namedtuple
print(S)