How do I format a nested python dictionary and write it to a json file?-CodePudding

I am looking to run a calculation in my Django view and then write it to a json file. However I am struggling to get the formatting right.

I need the output json file to look something like this:

{
    "dates":
    {
        "year":
        {
            "total": 1586266,
            "upDown": 9.8,
            "data": {
                "labels": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
                "income": [2000, 4000, 6000, 8000, 10000, 12000, 14000, 16000, 18000, 20000, 22000, 24000],
                "expenses": [6000, 12000, 18000, 24000, 30000, 36000, 42000, 48000, 54000, 60000, 66000, 72000]
            }
        }
    }
}

Here is what I have in my view:

def generateGraph():
    income = [{'income':['2000','2000','2000','2000','2000','2000','2000','2000','2000','2000','2000','2000']}]
    expenses = [{'expenses':['1000','1000','1000','1000','1000','1000','1000','1000','1000','1000','1000','1000']}]
    labels = [{'labels':['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']}]
    total = 1586266
    upDown = 9.8
    data = [labels, income, expenses]
    year = [total,upDown,data]
    dates = [year]

    with open(
    "static/graph.json") as f:json.dump(dates, f)

    return HttpResponse(open("static/graph.json", 'r'), content_type = 'application/json; charset=utf8')

However, the output I currently get in my json file is:

[[1586266, 9.8, [[{"labels": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]}], [{"income": ["2000", "2000", "2000", "2000", "2000", "2000", "2000", "2000", "2000", "2000", "2000", "2000"]}], [{"expenses": ["1000", "1000", "1000", "1000", "1000", "1000", "1000", "1000", "1000", "1000", "1000", "1000"]}]]]]

Thanks!

CodePudding user response：

You have labels, income, and expenses each as a list with a single dict in it. You just need the dict.

You have data, year and dates as lists when they need to be dicts.

You just have to get everything in the right form:

def generateGraph():
    income = {'income':['2000','2000','2000','2000','2000','2000','2000','2000','2000','2000','2000','2000']}
    expenses = {'expenses':['1000','1000','1000','1000','1000','1000','1000','1000','1000','1000','1000','1000']}
    labels = {'labels':['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']}
    total = 1586266
    upDown = 9.8
    data = labels | income | expenses
    year = {'total':total, 'upDown':upDown, 'data':data}
    dates = {'year': year}

    with open("static/graph.json") as f:
        json.dump({'dates: dates}, f)

CodePudding user response：

Just change lists to dictionary:

income = [{'income':['2000','2000','2000','2000','2000','2000','2000','2000','2000','2000','2000','2000']}]
expenses = [{'expenses':['1000','1000','1000','1000','1000','1000','1000','1000','1000','1000','1000','1000']}]
labels = [{'labels':['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']}]
total = 1586266
upDown = 9.8
data = {
    "labels": labels, 
    "income": income, 
    "expenses":expenses
}
year = {
    "total": total,
    "upDown": upDown,
    "data": data
}
dates = {
    "year":year
}

CodePudding user response：

You don't need to save json to a file.

You just need to use JsonResponse

def generateGraph():
    data = {
        "dates": {
            "year": {
                "total": 1586266,
                "upDown": 9.8,
                "data": {
                    "labels": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
                    "income": [2000, 4000, 6000, 8000, 10000, 12000, 14000, 16000, 18000, 20000, 22000, 24000],
                    "expenses": [6000, 12000, 18000, 24000, 30000, 36000, 42000, 48000, 54000, 60000, 66000, 72000]
                }
            }
        }
    }

return JsonResponse(data)