Extract all keys recursively - all keys json

extract.py

import json

data = """
{
    "data": {
        "items": [
            {
                "name": "SciELO Preprints",
                "type": "dataverse",
                "url": "https://data.scielo.org/dataverse/preprints",
                "identifier": "preprints",
                "description": "",
                "published_at": "2020-09-11T16:26:43Z"
            },
            {
                "name": "An Academic Publishers’ GO FAIR Implementation Network (APIN)",
                "type": "dataset",
                "url": "https://doi.org/10.48331/scielodata.9CT6WT",
                "global_id": "doi:10.48331/scielodata.9CT6WT",
                "description": "",
                "published_at": "2021-01-20T18:35:39Z",
                "publisher": "SciELO Data",
                "citationHtml": "",
                "identifier_of_dataverse": "scielodata",
                "name_of_dataverse": "SciELO Data",
                "citation": "",
                "storageIdentifier": "s3://10.48331/scielodata.9CT6WT",
                "subjects": [
                    "Computer and Information Science"
                ],
                "fileCount": 2,
                "versionId": 11,
                "versionState": "RELEASED",
                "majorVersion": 1,
                "minorVersion": 0,
                "createdAt": "2021-01-20T18:14:19Z",
                "updatedAt": "2021-01-20T18:35:39Z",
                "contacts": [
                    {
                        "name": "Blog SciELO em Perspectiva",
                        "affiliation": ""
                    }
                ],
                "publications": [
                    {
                        "url": "https://content.iospress.com/articles/information-services-and-use/isu200102"
                    }
                ],
                "authors": [
                    "Jan Velterop",
                    "Erik Schultes"
                ]
            }
        ]
    }
}
"""

json_data = json.loads(data)


def get_all_keys(data):
    # define a function to extract all keys recursively
    keys = set()

    if isinstance(data, dict):

        for key, value in data.items():
            keys.add(key)
            keys.update(get_all_keys(value))

    elif isinstance(data, list):

        for item in data:
            keys.update(get_all_keys(item))

    return keys


# call the function to get all keys
all_keys = get_all_keys(json_data)

# print the keys
print(all_keys)