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Retrieves the value of the nested key indicated by the given selector list from a dictionary or list.
- Use
functools.reduce()to iterate over theselectorslist. - Apply
operator.getitem()for each key inselectors, 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]) # 2Recommended snippets
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