将python输出格式化为json

Question

我编写了一个Python脚本,以Json格式输出一个长数据结构(我称之为"celldict"的字典).这是其中的一小部分:

{
    "1224": {
        "OUT3FA_5": 12,
        "IN1": 37,
        "Total_IN1": 37
    },
    "1225": {
        "OUT3FA_5": 24,
        "IN1": 59,
        "Total_IN1": 22
    }
}

但我想做的是这样的事情:

{
    "success": true,
    "data": [
        {
            "Week":"1224",
            "OUT3FA_5": 65,
            "IN1": 85,
            "Total_IN1": 100
        },
        {
            "Week":"1225",
            "OUT3FA_5": 30,
            "IN1": 40,
            "Total_IN1": 120
        }
    ]
}

有没有办法用Python格式化json输出以获得我想要的东西？我做:

print json.dumps(celldict)

得到我的输出.任何帮助将非常感激.

Answer 1

只要把celldict 里面的另一个字典:

json.dumps({'success': True, 'data': celldict.values()})

您必须先将Week键添加到celldict词典中:

for d in celldict.itervalues():
    celldict['Week'] = '1238'

或使用即时创建每个词典的副本:

json.dumps({'success': True, 'data': [dict(d, Week='1238') for d in celldict.values()]})

后一种方法,带有一些缩进,产生:

>>> print json.dumps({'success': True, 'data': [dict(d, Week='1238') for d in celldict.values()]}, indent=4)
{
    "data": [
        {
            "OUT3FA_5": 24, 
            "Week": "1238", 
            "Total_IN1": 22, 
            "IN1": 59
        }, 
        {
            "OUT3FA_5": 12, 
            "Week": "1238", 
            "Total_IN1": 37, 
            "IN1": 37
        }
    ], 
    "success": true
}

在行之间读取,似乎输入示例中的1224和1225键实际上是您所指的周数.如果是这样,它们很容易合并:

json.dumps({'success': True, 'data': [dict(d, Week=k) for k, d in celldict.iteritems()]})

会产生:

{
    "data": [
        {
            "OUT3FA_5": 24, 
            "Week": "1225", 
            "Total_IN1": 22, 
            "IN1": 59
        }, 
        {
            "OUT3FA_5": 12, 
            "Week": "1224", 
            "Total_IN1": 37, 
            "IN1": 37
        }
    ], 
    "success": true
}