Menu

gitpiper

difference_by python Code Snippet in 2023

listfunctionintermediate

Last Updated: 1 March 2023

Returns the difference between two lists, after applying the provided function to each list element of both.

  • Create a set, using map() to apply fn to each element in b.
  • Use a list comprehension in combination with fn on a to only keep values not contained in the previously created set, _b.
def difference_by(a, b, fn): _b = set(map(fn, b)) return [item for item in a if fn(item) not in _b]
from math import floor difference_by([2.1, 1.2], [2.3, 3.4], floor) # [1.2] difference_by([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], lambda v : v['x']) # [ { x: 2 } ]

python snippet similar to difference_by For You in February 2023

Subscribe to our Newsletter

Subscribe to get resources directly to your inbox. You won't receive any spam! ✌️

© 2023 GitPiper. All rights reserved

Rackpiper Technology Inc

Company

About UsBlogContact

Subscribe to our Newsletter

Subscribe to get resources directly to your inbox. You won't receive any spam! ✌️