Find last matching value

OSCC · Python, List · Nov 2, 2020

Finds the value of the last element in the given list that satisfies the provided testing function.

  • Use a list comprehension and next() to return the last element in lst for which fn returns True.
def find_last(lst, fn):
  return next(x for x in lst[::-1] if fn(x))
find_last([1, 2, 3, 4], lambda n: n % 2 == 1) # 3

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