30-seconds-of-code/snippets/python/s/find-keys.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Find keys with value	snippet	python	dictionary	laptop-plants-2	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' ]