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

title, tags

title	tags
pluck	list,dictionary,beginner

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]