Question

假设输入是这样的：

"[{'ability': 18, 'spin': -14, 'strike': 0, 'purity': 5, 'power': 257}, {'ability': -6, 'spin': 147, 'strike': -17, 'purity': 6, 'power': 288}, {'ability': 9, 'spin': 272, 'strike': 10, 'purity': 8, 'power': 256}, {'ability': 0, 'spin': 138, 'strike': -6, 'purity': 19, 'power': 205}]"

我必须根据键“ ability”上的值对输入进行排序。

def sort_kvs(lsts):
      l = len(lsts)
      sort = []
      smallest = lsts[0]["ability"]
      for i in range (l):
        if lsts[i]["ability"] < lsts[0]["ability"]:
          smallest = lsts[i]["ability"]
          small = lsts[i]
          sort.append(small)
      return sort

我想要这样的输出：[{'ability': -6, 'spin': 147, 'strike': -17, 'purity': 6, 'power': 288}, {'ability': 0, 'spin': 138, 'strike': -6, 'purity': 19, 'power': 205}, {'ability': 9, 'spin': 272, 'strike': 10, 'purity': 8, 'power': 256}, {'ability': 18, 'spin': -14, 'strike': 0, 'purity': 5, 'power': 257}]

Answer 1

将sorted与自定义key一起使用：

>>> l = [{'ability': 18, 'spin': -14, 'strike': 0, 'purity': 5, 'power': 257}, {'ability': -6, 'spin': 147, 'strike': -17, 'purity': 6, 'power': 288}, {'ability': 9, 'spin': 272, 'strike': 10, 'purity': 8, 'power': 256}, {'ability': 0, 'spin': 138, 'strike': -6, 'purity': 19, 'power': 205}]
>>> list(sorted(l, key=lambda x: x["ability"]))
[{'ability': -6, 'spin': 147, 'strike': -17, 'purity': 6, 'power': 288}, {'ability': 0, 'spin': 138, 'strike': -6, 'purity': 19, 'power': 205}, {'ability': 9, 'spin': 272, 'strike': 10, 'purity': 8, 'power': 256}, {'ability': 18, 'spin': -14, 'strike': 0, 'purity': 5, 'power': 257}]

如果sorted是list，则无需用python2包裹SELECT Fiscal_Year, Month_Name, COUNT(DISTINCT CTL_NO) FROM SOME_TABLE t group by Fiscal_Year, Month_Name ORDER BY Fiscal_year , CASE TRIM(TO_CHAR(to_date(Month_Name,'Month'), 'MM')) WHEN '10' THEN -2 WHEN '11' THEN -1 WHEN '12' THEN 0 ELSE TO_NUMBER(TO_CHAR(to_date(Month_Name,'Month'), 'MM')) END

Answer 2

sorted(data, key=lambda x: x['ability'])

输出：

{'ability': -6, 'spin': 147, 'strike': -17, 'purity': 6, 'power': 288}
{'ability': 0, 'spin': 138, 'strike': -6, 'purity': 19, 'power': 205}
{'ability': 9, 'spin': 272, 'strike': 10, 'purity': 8, 'power': 256}
{'ability': 18, 'spin': -14, 'strike': 0, 'purity': 5, 'power': 257}

如何按特定键对键值存储列表进行排序？

2 个答案: