Get type (workspace, model, patchset, ...) of JSON

[vaustrup]

Is there an elegant way to inspect a given JSON object and return its type, i.e. whether it is a measurement, a patchset, or something else? I have a list of files that need sorting into the different categories. I am currently using code along the following lines:

def category_and_version(f):
    CATEGORIES = ["workspace", "patchset", "model", "measurement"]
    VERSIONS = ["1.0.0"]
    with open(f, "r") as f_json:
        content = json.load(f_json)
        for category in CATEGORIES:            
            for version in VERSIONS:
                try:
                    pyhf.schema.validate(spec=content, schema_name=f"{category}.json", version=version)
                    return category, version
                except pyhf.exceptions.InvalidSpecification:
                    pass
    return None, None

but it would be great if there was an easier way to get this information.