creating a json array in python

Question

I need to create a json array like ["a", "b", "c", "d"]

I'm trying to create it as follows

import json

with open('djs.json', 'w') as outfile:
    for dj in DJ.objects.all():
        json.dump(str(dj), outfile, separators=(',', ': '))

This creates something like "a","b","c","d"

What would be the correct way to do this?

dj is a Django model object that contains all the information regarding a DJ. dj evaluates to the DJ name if that's what you are asking. — user3725362
– user3725362, Commented Jun 25, 2014 at 18:45

karthikr · Accepted Answer · 2014-06-25 18:53:54Z

3

How about this:

lst = [str(dj) for dj in DJ.objects.all()]    
with open('data.txt', 'w+') as outfile:
    json.dump(lst, outfile)

if your __unicode__ is a single field, You could even do

json_dump = json.dump(list(Dj.objects.values_list('field', flat=True)))

answered Jun 25, 2014 at 18:43

karthikr

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4 Comments

This is giving me a blank json file for some reason.

do you want to return a json to a respond to a request ?

No, I need to make a JSON file with a JSON array containing the name of all the DJs.

Ok. check the edit. You should have the json in a file called data.txt