Save JSON file with Python

save-file.py

import json

def writeToJSONFile(path, fileName, data):
    filePathNameWExt = './' + path + '/' + fileName + '.json'
    with open(filePathNameWExt, 'w') as fp:
        json.dump(data, fp)


# Example
data = {}
data['key'] = 'value'

writeToJSONFile('./','file-name',data)
# './' represents the current directory so the directory save-file.py is in
# 'test' is my file name

i keep get this error:
File "/usr/lib/python3.6/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

hhufddfjvfv

your path has './' and then you re add './' in
filePathNameWExt = './' + path + '/' + fileName + '.json'

so it should be
filePathNameWExt = path + fileName + '.json'

Thanks for the help . It worked for me :)

nice work, thanks :)

why not use:
import os
os.path.join('.', path, filename + '.json')
This solution is more error proof than yours.

nice :) thank u

Nice Job Thank a lot

Thnk's

Great job

what if i wanted to add more data as to what it previously had?

@i-vers

what if i wanted to add more data as to what it previously had?

use the a file permission instead of w, so it would be

with open("file.txt", "w") as f:
    f.write("Hello ")

with open("file.txt", "a") as f:
    f.write("World!")

file.txt

Hello World!

---

Well, in the case you are dealing with json, you cant do that, so you would have to first read the file
and then rewrite it from scratch using the already read data

in that case it would be

# Save the file
import json

with open("out.json", "w") as f:
    json.dump(f, [1, 2, 3])

# r+ is for both reading and writing
with open("out.json", "r+") as f:
    existing_data = json.load(f)     #  load   [1, 2, 3]  from the file
    existing_data.extend([4, 5, 6])  #  add    [4, 5, 6]   to the loaded data
    json.dump(f, existing_data)     #   write  [1, 2, 3, 4, 5, 6]  to the file

out.json

[1, 2, 3, 4, 5, 6]

How to create a JSON file and save it to a specific folder?
I have created a JSON file but it gets saved in my project folder but I want to save it in another folder.