Python: Retrieve the value of the nested key indicated by the given selector list from a dictionary or list

Python dictionary: Exercise-71 with Solution

Write a Python program to retrieve the value of the nested key indicated by the given selector list from a dictionary or list.

Sample Solution:

Python Code:

from functools import reduce 
from operator import getitem
def test(d, selectors):
  return reduce(getitem, selectors, d) 
users = {
  'Carla ': {
    'name': {
      'first': 'Carla ',
      'last': 'Russell' 
    },
    'postIds': [1, 2, 3, 4, 5]
  }
}
print(test(users, ['Carla ', 'name', 'last']))
print(test(users, ['Carla ', 'postIds', 1]))

Sample Output:

Russell
2

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