我是python的新手,我在尝试将以下列表转换为字典时已经挣扎了一段时间。
lst = ['AB_MK1230', 'MK12303', 86.17, 'AB_MK1230', 'MK12302', 89.99,
'AB_MK1230', 'MK12301', 93.82, 'AB_MK1230', 'MK12301', 94.81, 'AB_MK1230',
'MK12303', 87.5, 'AB_MK1230', 'MK12302', 94.67, 'AB_MK1230', 'MK12302', 90.32,
'AB_MK1230', 'MK12303', 89.26, 'AB_MK1230', 'MK12301', 91.75,'AB_MK1230',
'MK12302', 88.54, 'AB_MK1230', 'MK12303', 92.5,'AB_MK1230', 'MK12301', 93.49,
'AB_MK1230', 'MK12301', 86.47,'AB_MK1230', 'MK12302', 84.79,'AB_MK1230',
'MK12303', 86.57,'AB_MK1230', 'MK12301', 79.24,'AB_MK1230', 'MK12302', 80.34,
'AB_MK1230', 'MK12303', 76.88]
AB_MK1230是母扇区,MK12303,MK12301和MK12302是子扇区。我的输出是一个字典,其中包含每个子扇区的键和父扇区以及浮点值作为该键的值,如下所示。
dict = {MK12301: AB_MK1230, 93.82, 94.81, 91.75, 93.49, 86.47, 79.24
MK12302: AB_MK1230, 89.99, 94.67, 90.32, 88.54, 84.79, 80.34
MK12303: AB_MK1230, 86.17, 87.50, 89.26, 92.50, 86.57, 76.88 }
我已经阅读了https://docs.python.org/3/tutorial/datastructures.html?highlight=dictionaries的一些文档,但我仍然无法找到解决方案。
我怎样才能做到这一点?
答案 0 :(得分:2)
我们遍历列表,在(parent, child, value)
- 订单中一次解包三个项目。我们使用(parent, child)
作为字典中的键,然后将值添加到set
。
import itertools
import collections
lst = ['AB_MK1230', 'MK12303', 86.17, 'AB_MK1230', 'MK12302', 89.99,
'AB_MK1230', 'MK12301', 93.82, 'AB_MK1230', 'MK12301', 94.81, 'AB_MK1230',
'MK12303', 87.5, 'AB_MK1230', 'MK12302', 94.67, 'AB_MK1230', 'MK12302', 90.32,
'AB_MK1230', 'MK12303', 89.26, 'AB_MK1230', 'MK12301', 91.75,'AB_MK1230',
'MK12302', 88.54, 'AB_MK1230', 'MK12303', 92.5,'AB_MK1230', 'MK12301', 93.49,
'AB_MK1230', 'MK12301', 86.47,'AB_MK1230', 'MK12302', 84.79,'AB_MK1230',
'MK12303', 86.57,'AB_MK1230', 'MK12301', 79.24,'AB_MK1230', 'MK12302', 80.34,
'AB_MK1230', 'MK12303', 76.88]
d = collections.defaultdict(set)
for parent, child, value in itertools.zip_longest(*[iter(lst)]*3, fillvalue=None):
d[(parent, child)].add(value)
d现在是一个像
这样的字典defaultdict(set,
{('AB_MK1230', 'MK12301'): {79.24,
86.47,
91.75,
93.49,
93.82,
94.81},
('AB_MK1230', 'MK12302'): {80.34,
84.79,
88.54,
89.99,
90.32,
94.67},
('AB_MK1230', 'MK12303'): {76.88,
86.17,
86.57,
87.5,
89.26,
92.5}})
目前还不完全清楚您的最终数据结构应该如何。如果您只想parent
作为顶级键,则可以使用嵌套的defaultdict
...