Question

我有一个看起来像这样的嵌套列表：

raw =  
[[(8, 0.44880571384598744), (17, 0.0403732344197908), 
(13, 0.03796821181062157), (1, 0.03777621092166489), 
(3, 0.02907007584458954), (5, 0.027577126778171947)], 
[(6, 0.24885153810452418), (13, 0.11945937235381485), 
(1, 0.07967490411502279), (7, 0.059837943219436064), 
(11, 0.054917316390175455), (3, 0.05439173103552319), 
(12, 0.042902668032641526), (2, 0.04067120278932331)]]

我想基于每个子列表的索引[0]处的int对嵌套列表进行排序。

但是当我尝试这样做时：

sortraw = []
for line in raw:
    k = sorted(line[0])
    sortraw.append(k)

根据每个子列表的float值对列表进行排序，并且嵌套列表消失。

我想要的结果将如下所示：

[[(1, 0.03777621092166489), (3, 0.02907007584458954), 
(5, 0.027577126778171947), (8, 0.44880571384598744),
(13, 0.03796821181062157), (17, 0.0403732344197908)], 
[(1, 0.07967490411502279), (2, 0.04067120278932331), 
(3, 0.05439173103552319), (6, 0.24885153810452418),
(7, 0.059837943219436064), (11, 0.054917316390175455),  
(12, 0.042902668032641526), (13, 0.11945937235381485)]]

我该怎么做？

Answer 1

raw = [[(8, 0.44880571384598744), (17, 0.0403732344197908), 
... (13, 0.03796821181062157), (1, 0.03777621092166489), 
... (3, 0.02907007584458954), (5, 0.027577126778171947)], 
... [(6, 0.24885153810452418), (13, 0.11945937235381485), 
... (1, 0.07967490411502279), (7, 0.059837943219436064), 
... (11, 0.054917316390175455), (3, 0.05439173103552319), 
... (12, 0.042902668032641526), (2, 0.04067120278932331)]]
>>> [sorted(sublist) for sublist in raw]
[[(1, 0.03777621092166489), (3, 0.02907007584458954), (5, 0.027577126778171947), (8, 0.44880571384598744), (13, 0.03796821181062157), (17, 0.0403732344197908)], [(1, 0.07967490411502279), (2, 0.04067120278932331), (3, 0.05439173103552319), (6, 0.24885153810452418), (7, 0.059837943219436064), (11, 0.054917316390175455), (12, 0.042902668032641526), (13, 0.11945937235381485)]]

或者就地进行：

for sublist in raw: sublist.sort()

Answer 2

如果您不想对整个raw列表进行排序，则可以使用：

list(map(sorted, raw)

Answer 3

您可以改用lambda函数：

print(list(map(lambda x:sorted(x), raw)))

输出：

[[(1, 0.03777621092166489), (3, 0.02907007584458954), (5, 0.027577126778171947), (8, 0.44880571384598744), (13, 0.03796821181062157), (17, 0.0403732344197908)], [(1, 0.07967490411502279), (2, 0.04067120278932331), (3, 0.05439173103552319), (6, 0.24885153810452418), (7, 0.059837943219436064), (11, 0.054917316390175455), (12, 0.042902668032641526), (13, 0.11945937235381485)]]

如何根据数值对嵌套列表进行排序？

3 个答案: