Write json into file Python 3

Question

I am trying to write JSON data into the file which is writing in one line as below:

{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}

My code is as follow:

with open(file_name, 'w') as file:
            for data in results:
                saveData = {}
                for k,v in data.items():
                    if v:
                        saveData[k] = v
                    else:
                        saveData[k] = ''
                print (json.dumps(saveData))
                file.write(json.dumps(saveData, ensure_ascii=False))
        file.close()

What I need it as below format:

{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}
{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}

I tried several ways from the various answer from StackOverflow, however, I am unable to get it? Is there any way to do it?

What is the difference between your first and last example outputs? — quamrana
– quamrana, Commented Apr 9, 2019 at 11:06
So you're asking how to add a file.write('\n') to your loop? — Aran-Fey
– Aran-Fey, Commented Apr 9, 2019 at 11:07
Just a side note: you don't need to close the file if you are using with — Jack Moody
– Jack Moody, Commented Apr 9, 2019 at 11:11

DirtyBit · Accepted Answer · 2019-04-09 11:20:46Z

4

Using json_dump:

j_data = {"AbandonmentDate": "", "Abstract": "", "Name": "ABC"},{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}

import json
with open('j_data_file.json', 'w') as outfile:
    json.dump(j_data, outfile,indent=4)

OUTPUT:

[
    {
        "AbandonmentDate": "",
        "Abstract": "",
        "Name": "ABC"
    },
    {
        "AbandonmentDate": "",
        "Abstract": "",
        "Name": "ABC"
    }
]

EDIT:

If you really want to have the elements printed on new lines, iterate over the data:

j_data = {"AbandonmentDate": "", "Abstract": "", "Name": "ABC"},{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}

import json
with open('j_data_file.json', 'w') as outfile:
    for elem in j_data:
        json.dump(elem, outfile)
        outfile.write('\n')

OUTPUT:

{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}
{"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}

edited Apr 9, 2019 at 11:20

answered Apr 9, 2019 at 11:12

DirtyBit

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10 Comments

quamrana Over a year ago

This is nothing like the output that the OP seems to want.

DirtyBit Over a year ago

@quamrana Perhaps, the way it should be no? Adding an alternative with a newline separator as well.

Sandeep Singh Over a year ago

this is pretty json, somehow in my further operations, it is not supported.

quamrana Over a year ago

@DirtyBit Certainly this is the code I would write. I don't know why the OP wants the format they specify.

DirtyBit Over a year ago

@quamrana Indeed, added the way OP wanted it as well! :)

|

andreihondrari · Accepted Answer · 2019-04-09 11:11:05Z

3

Assuming your json is like:

yourjson = [
    {"AbandonmentDate": "", "Abstract": "", "Name": "ABC"},
    {"AbandonmentDate": "", "Abstract": "", "Name": "ABC"}
]

then you need only to do this:

with open("outfile.txt", "w") as pf:
    for obj in yourjson:
        pf.write(json.dumps(obj) + "\n")

answered Apr 9, 2019 at 11:11

andreihondrari

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