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

title, tags, expertise, firstSeen, lastUpdated

title	tags	expertise	firstSeen	lastUpdated
Pluck values from list of dictionaries	list,dictionary	beginner	2020-10-22T03:49:25+03:00	2020-10-22T10:09:44+03:00

Converts a list of dictionaries into a list of values corresponding to the specified key.

• Use a list comprehension and dict.get() to get the value of key for each dictionary in lst.

def pluck(lst, key):
  return [x.get(key) for x in lst]

simpsons = [
  { 'name': 'lisa', 'age': 8 },
  { 'name': 'homer', 'age': 36 },
  { 'name': 'marge', 'age': 34 },
  { 'name': 'bart', 'age': 10 }
]
pluck(simpsons, 'age') # [8, 36, 34, 10]