'python - json , how to make a json flat

so i have a nested json that contains two groups , each group has a field that contains more sub groups i would like to pop all the sub groups out to flatten the json and remove the sub groups field

What is the correct way to do it

JSON :

[
    {
        "groupId": "a_group",
        "version": "2.0.1",
        "type": "jar",
        "sub_group": [
            {
                "groupId": "a_1",
                "version": "2.0.0",
                "type": "jar",
                "sub_group": []
            },
            {
                "groupId": "a_2",
                "version": "2.0.1",
                "type": "jar",
                "sub_group": [
                                {
                                "groupId": "a_1",
                                "version": "2.0.0",
                                "type": "jar",
                                "sub_group": []
                                },
                ],
            }
        ],
    },
    {
        "groupId": "c_group",
        "version": "1.9.1",
        "type": "jar",
        "sub_group": [
                    {
                "groupId": "a_1",
                "version": "2.0.0",
                "type": "jar",
                "sub_group": []
            },
        ],
    },
}

This is the expected result: I need to pop all the sub groups and make them appear as a flat json like this

[{
        "groupId": "a_group",
        "version": "2.0.1",
        "type": "jar",
        "sub_group": []
    },
    {
        "groupId": "a_1",
        "version": "2.0.0",
        "type": "txt",
        "sub_group": []
    },
    {
        "groupId": "a_2",
        "version": "2.0.1",
        "type": "jar",
        "sub_group": []
    },
    {
        "groupId": "c_group",
        "version": "1.9.1",
        "type": "jar",
        "sub_group": []
    },
]

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'python - json , how to make a json flat

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