How to fix error when saving file to json?

Question

Python

There is a list of dictionaries [{}, {}, {}, {}...] (in the .json file)
It is necessary to find dictionaries with the same keys and remove duplicates. I do it like this:

with open('file.json') as f:
    data = json.load(f)
clean_data = [{x['title']: x for x in data}.values()]

When trying to save clean_data back to a .json file:

with open("clean_file.json", "w") as file:
    json.dump(file, clean_data)

I am getting an error:

TypeError: Object of type TextIOWrapper is not JSON serializable

How to identify/correct the cause?

Answer 1

Read the documentation for the json.dump function and check the order of the parameters.

Answer 2

The order in which parameters are passed is messed up.

with open("clean_file.json", "w") as file:
    json.dump(clean_data, file)