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

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"}

@quamrana Perhaps, the way it should be no? Adding an alternative with a newline separator as well.
this is pretty json, somehow in my further operations, it is not supported.
@DirtyBit Certainly this is the code I would write. I don't know why the OP wants the format they specify.

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

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")

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