Find keys with value

Python, Dictionary · Nov 2, 2020

Finds all keys in the provided dictionary that have the given value.

  • Use dictionary.items(), a generator and list() to return all keys that have a value equal to val.
def find_keys(dict, val):
  return list(key for key, value in dict.items() if value == val)
ages = {
  'Peter': 10,
  'Isabel': 11,
  'Anna': 10,
find_keys(ages, 10) # [ 'Peter', 'Anna' ]

More like this

  • Find key of value

    Python, Dictionary

    Finds the first key in the provided dictionary that has the given value.

  • Get nested value

    Python, Dictionary

    Retrieves the value of the nested key indicated by the given selector list from a dictionary or list.

  • Map dictionary values

    Python, Dictionary

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