Question

我正在尝试按两个值对python中的字符串列表进行排序。我想出的是：

import operator
l = ['A1 B2', 'A2 B2', 'A1 B3', 'A2 B1', 'A1 B1']
sorted(l, key=operator.itemgetter(1, 4))
['A1 B1', 'A1 B2', 'A1 B3', 'A2 B1', 'A2 B2']

但是，键的位置是相对硬编码的，并且如果字符串更改为['AA1 BB2', 'AA2 BB2', 'AA1 BB3', 'AA2 BB1', 'AA1 BB1']，它将无法正常工作。此外，数字也可以包含多于一个数字['A1 B202', 'A2 B101', 'A1 B200', 'A2 B100', 'A1 B201']。

如何更优雅地按两位数字对字符串列表进行排序？

Answer 1

第三方模块有效吗？您可以将natsort与可拆分并自然排序的键一起使用：

>>> import natsort
>>> natsort.natsorted(l, key=str.split)
['AA1 BB1', 'AA1 BB2', 'AA1 BB3', 'AA2 BB1', 'AA2 BB2']

您可以将natsort与pip一起安装。

多于一位数字应该工作
每个字符串有两个以上的单词时，也应该起作用。
当数字不在字符串末尾时也应该起作用

对于在此给出的示例，

排序是自然进行的，而不是字典上的，其他回答恰好返回与自然排序相同的答案。

Answer 2

最好没有lambda：

>>> l=['A1 B202', 'A2 B101', 'A1 B200', 'A2 B100', 'A1 B201']
>>> sorted(l,key=str.split)
['A1 B200', 'A1 B201', 'A1 B202', 'A2 B100', 'A2 B101']
>>>

Answer 3

0 info it worked if it ends with ok
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23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

很抱歉用手机写的《错误提示》

指定用于对字符串列表进行排序的键

3 个答案: