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python/snippets/pluck.md

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+---
+title: Pluck values from list of dictionaries
+type: snippet
+tags: [list,dictionary]
+cover: succulent-9
+dateModified: 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`.
+
+```py
+def pluck(lst, key):
+  return [x.get(key) for x in lst]
+```
+
+```py
+simpsons = [
+  { 'name': 'lisa', 'age': 8 },
+  { 'name': 'homer', 'age': 36 },
+  { 'name': 'marge', 'age': 34 },
+  { 'name': 'bart', 'age': 10 }
+]
+pluck(simpsons, 'age') # [8, 36, 34, 10]
+```