30-seconds-of-code/snippets/find_keys.md

title, tags, expertise, author, firstSeen, lastUpdated

title	tags	expertise	author	firstSeen	lastUpdated
Find keys with value	dictionary	intermediate	maciv	2020-04-16T19:17:13+03:00	2020-11-02T19:27:53+02:00

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' ]