Retrieves the value of the nested key indicated by the given selector list from a dictionary or list.
functools.reduce()
to iterate over the selectors
list.operator.getitem()
for each key in selectors
, retrieving the value to be used as the iteratee for the next iteration.from functools import reduce
from operator import getitem
def get(d, selectors):
return reduce(getitem, selectors, d)
users = {
'freddy': {
'name': {
'first': 'fred',
'last': 'smith'
},
'postIds': [1, 2, 3]
}
}
get(users, ['freddy', 'name', 'last']) # 'smith'
get(users, ['freddy', 'postIds', 1]) # 2
Python, Dictionary
Combines two or more dictionaries, creating a list of values for each key.
Python, Dictionary
Finds all keys in the provided dictionary that have the given value.
Python, Dictionary
Finds the first key in the provided dictionary that has the given value.