30秒学会 Python 片段 – Every nth element in list

Returns every nth element in a list.

• Use slice notation to create a new list that contains every nth element of the given list.

代码实现

def every_nth(lst, nth):
  return lst[nth - 1::nth]

使用样例

every_nth([1, 2, 3, 4, 5, 6], 2) # [ 2, 4, 6 ]

翻译自：https://www.30secondsofcode.org/python/s/every-nth