[問題] list如何取前30%和後70%
各位好 有幾個問題想要詢問
我有個list如下所示,list中有多個物件,要如何自動取出30%和70%呢?
list = [‘1’,’2’,’3’,’4’,’5’,’6’,’7’,’8’,’9’,’10’,]
用虛擬碼舉例
我希望第一次印出前30%
a = list * 30%
print a
1,2,3
第二次印出後70%
b = list * 70%
print b
4,5,6,7,8,9,10
4,5,6,7,8,9,10
4,5,6,7,8,9,10
我第一種想法是用set的方式來解,印出這十個東西的位置,可是做到一半忽然想到,假如是11個東西算30%又會出現四捨五入的問題就卡關了。
還請大家解答,謝謝。
p.s有網友這周末(4/22,23,24)有空嗎?想找個短期家教問問題,主要為討論Python 問題及解答,若有興趣請來信,謝謝
--
Sent from my Windows
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 59.120.251.134
※ 文章網址: https://www.ptt.cc/bbs/Python/M.1461227123.A.5C4.html
※ 編輯: busystudent (223.139.166.116), 04/21/2016 16:31:38
推
04/21 16:31, , 1F
04/21 16:31, 1F
→
04/21 16:34, , 2F
04/21 16:34, 2F
→
04/21 16:35, , 3F
04/21 16:35, 3F
推
04/21 16:37, , 4F
04/21 16:37, 4F
→
04/21 16:37, , 5F
04/21 16:37, 5F
→
04/21 16:39, , 6F
04/21 16:39, 6F
→
04/21 16:39, , 7F
04/21 16:39, 7F
→
04/21 16:39, , 8F
04/21 16:39, 8F
※ 編輯: busystudent (223.139.166.116), 04/21/2016 16:55:19
推
04/21 17:25, , 9F
04/21 17:25, 9F
→
04/21 17:28, , 10F
04/21 17:28, 10F
→
04/21 17:45, , 11F
04/21 17:45, 11F
→
04/21 17:45, , 12F
04/21 17:45, 12F
→
04/21 17:48, , 13F
04/21 17:48, 13F
推
04/22 17:38, , 14F
04/22 17:38, 14F