对多个子词典值对词典词典进行排序

Question

我有一本字典，看起来像这样：

myDict = {
    'SER12346': {'serial_num': 'SER12346', 'site_location': 'North America'},
    'ABC12345': {'serial_num': 'ABC12345', 'site_location': 'South America'},
    'SER12345': {'serial_num': 'SER12345', 'site_location': 'North America'},
    'SER12347': {'serial_num': 'SER12347', 'site_location': 'South America'},
    'ABC12346': {'serial_num': 'ABC12346', 'site_location': 'Europe'}
}

我的目标是按照每个子字典的site_location和对字典进行排序serial_num。

使用我在这个问题中找到的代码-对字典python的字典进行排序-我能够对它进行排序，但这并不是我所期望的。

这是我的代码：

import pprint
items = ((k, k2, v) for k in myDict for k2, v in myDict[k].items())
ordered = sorted(items, key=lambda x:x[-1], reverse=False)
pprint.pprint(ordered)

这是我得到的结果：

[('ABC12346', 'site_location', 'Europe'),
 ('SER12345', 'site_location', 'North America'),
 ('SER12346', 'site_location', 'North America'),
 ('SER12347', 'site_location', 'South America'),
 ('ABC12345', 'site_location', 'South America'),
 ('ABC12346', 'serial_num': 'ABC12346'),
 ('SER12345', 'serial_num': 'SER12345'),
 ('SER12346', 'serial_num': 'SER12346'),
 ('SER12347', 'serial_num': 'SER12347'),
 ('ABC12345', 'serial_num': 'ABC12345')]

我期待更多这样的事情：

{
    'ABC12346': {'serial_num': 'ABC12346', 'site_location': 'Europe'}
    'SER12345': {'serial_num': 'SER12345', 'site_location': 'North America'},
    'SER12346': {'serial_num': 'SER12346', 'site_location': 'North America'},
    'SER12347': {'serial_num': 'SER12347', 'site_location': 'South America'},
    'ABC12345': {'serial_num': 'ABC12345', 'site_location': 'South America'},
}

实际结果是分离序列号和站点位置。我想将它们放在排序对象中。我怎样才能做到这一点？

Answer 1

这就是你想要的吗？

dicts = [{k: v} for (k,v) in myDict.items()]
dicts.sort(key=lambda d: (d.values()[0]['site_location'], d.values()[0]['serial_num'],))

输出结果：

import pprint
pprint.pprint(dicts)

是：

[{'ABC12346': {'serial_num': 'ABC12346', 'site_location': 'Europe'}},
 {'SER12345': {'serial_num': 'SER12345', 'site_location': 'North America'}},
 {'SER12346': {'serial_num': 'SER12346', 'site_location': 'North America'}},
 {'ABC12345': {'serial_num': 'ABC12345', 'site_location': 'South America'}},
 {'SER12347': {'serial_num': 'SER12347', 'site_location': 'South America'}}]

编辑：我正在为您的输出格式的答案，但这可能更有意义：

dicts = myDict.items()
dicts.sort(key=lambda (k,d): (d['site_location'], d['serial_num'],))

输出：

[('ABC12346', {'serial_num': 'ABC12346', 'site_location': 'Europe'}),
 ('SER12345', {'serial_num': 'SER12345', 'site_location': 'North America'}),
 ('SER12346', {'serial_num': 'SER12346', 'site_location': 'North America'}),
 ('ABC12345', {'serial_num': 'ABC12345', 'site_location': 'South America'}),
 ('SER12347', {'serial_num': 'SER12347', 'site_location': 'South America'})]