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map_values python Code Snippet in 2022

dictionaryintermediate

Last Updated: 26 November 2022

Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value.

  • Use dict.items() to iterate over the dictionary, assigning the values produced by fn to each key of a new dictionary.
def map_values(obj, fn): return dict((k, fn(v)) for k, v in obj.items())
users = { 'fred': { 'user': 'fred', 'age': 40 }, 'pebbles': { 'user': 'pebbles', 'age': 1 } } map_values(users, lambda u : u['age']) # {'fred': 40, 'pebbles': 1}

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