title: find
tags: list,beginner

Returns the value of the first element in the provided list that satisfies the provided testing function.

Use list comprehension and next() to return the first element in lst for which fn returns True.

代码实现

def find(lst, fn):
  return next(x for x in lst if fn(x))

使用样例

find([1, 2, 3, 4], lambda n: n % 2 == 1) # 1