[問題] slice
請問在step為-1的情況下,取start:stop應該怎麼看才對?
aa=['a', 'b', 'c']
print (aa[::-1]) # ['c', 'b', 'a']
print (aa[1::-1]) # ['b', 'a']
print (aa[2::-1]) # ['c', 'b', 'a']
print (aa[:1:-1]) # ['c']
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 220.136.108.205 (臺灣)
※ 文章網址: https://www.ptt.cc/bbs/Python/M.1602769746.A.E8A.html
→
10/15 22:00,
3年前
, 1F
10/15 22:00, 1F
推
10/16 01:09,
3年前
, 2F
10/16 01:09, 2F
→
10/16 01:10,
3年前
, 3F
10/16 01:10, 3F
→
10/16 01:11,
3年前
, 4F
10/16 01:11, 4F
推
10/16 13:05,
3年前
, 5F
10/16 13:05, 5F
→
10/16 21:04,
3年前
, 6F
10/16 21:04, 6F
討論串 (同標題文章)