将此python字典转换为JSON格式吗？

Question

我有一个要转换成json的python字典。Python字典：{"20090209.02s1.1_sequence.txt": [645045714, 3559.6422951221466, 206045184], "20090209.02s1.2_sequence.txt": [645045714, 3543.8322949409485, 234618880]}所需的输出：{       "file_name":"20090209.02s1.1_sequence.txt",       "file_information": [645045714, 3559.6422951221466, 206045184],    {       "file_name":"20090209.02s1.2_sequence.txt",       "file_information": [645045714, 3543.8322949409485, 234618880],    }}尝试过，json.dumps但是我没有得到想要的输出。

Answer 1

您需要首先创建具有正确格式的结构：

import json

dict_ = {"20090209.02s1.1_sequence.txt": [645045714, 3559.6422951221466, 206045184], "20090209.02s1.2_sequence.txt": [645045714, 3543.8322949409485, 234618880]}

values = [{"file_name": k, "file_information": v} for k, v in dict_.items()]

json.dumps(values, indent=4)

请注意，所需的JSON输出对我而言无效。这是此代码的输出：

[

    {

        "file_name": "20090209.02s1.1_sequence.txt", 

        "file_information": [

            645045714, 

            3559.6422951221466, 

            206045184

        ]

    }, 

    {

        "file_name": "20090209.02s1.2_sequence.txt", 

        "file_information": [

            645045714, 

            3543.8322949409485, 

            234618880

        ]

    }

]

Answer 2

将键值对拆分为单独的字典：

json.dumps([{'file_name': key, 'file_information': value} for key, value in yourdict.iteritems()])

请注意，输出的顺序将是任意的（字典没有固定的顺序）。您可能需要对输出进行排序以生成可预测的列表：

from operator import itemgetter

data = [{'file_name': key, 'file_information': value} for key, value in yourdict.iteritems()]

data.sort(key=itemgetter('file_name'))

json.dumps(data)

这将产生：

>>> data = [{'file_name': key, 'file_information': value} for key, value in yourdict.iteritems()]

>>> data.sort(key=itemgetter('file_name'))

>>> json.dumps(data)

'[{"file_name": "20090209.02s1.1_sequence.txt", "file_information": [645045714, 3559.6422951221466, 206045184]}, {"file_name": "20090209.02s1.2_sequence.txt", "file_information": [645045714, 3543.8322949409485, 234618880]}]'

>>> print json.dumps(data, indent=4)

[

    {

        "file_name": "20090209.02s1.1_sequence.txt",

        "file_information": [

            645045714,

            3559.6422951221466,

            206045184

        ]

    },

    {

        "file_name": "20090209.02s1.2_sequence.txt",

        "file_information": [

            645045714,

            3543.8322949409485,

            234618880

        ]

    }

]