How to save a dictionary and a list in the same json file with python?

Question

I wish to save a dictionary and a list in one json file so that when I parse the file I could distinguish them. This is the function I use to save the dictionary in the json file:

def save_callback():
    #folder = filedialog.askdirectory()
    file = filedialog.asksaveasfilename()
    with open(file,'w') as file:
        file.write(json.dumps(test_dict))
    os.rename(file.name,file.name + ".txt")

What should I add to this function to save the list too?

Adrian Ang · Accepted Answer · 2022-08-09 10:20:45Z

1

Since JSON objects can be arbitrarily nested, the easiest solution is to store both the dict and the list inside another object:

data = json.dumps([test_dict, test_list])

Then you can load it like this:

test_dict, test_list = json.loads(data)

edited Aug 9, 2022 at 10:20

Adrian Ang

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answered Aug 9, 2022 at 10:06

Bharel

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2 Comments

user17543723 Over a year ago

The first part worked but the load returns an error: TypeError: the JSON object must be str, bytes or bytearray, not TextIOWrapper

Bharel Over a year ago

@evgeny You're not giving it the data, you give it a file. If you wish to give a file, use json.load(file). (Notice the lack of s denoting a string).

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