csv compare python

$ csv-diff one.csv two.csv --key=id --json
{
    "added": [
        {
            "id": "3",
            "name": "Bailey",
            "age": "1"
        }
    ],
    "removed": [
        {
            "id": "2",
            "name": "Pancakes",
            "age": "2"
        }
    ],
    "changed": [
        {
            "key": "1",
            "changes": {
                "age": [
                    "4",
                    "5"
                ]
            }
        }
    ],
    "columns_added": [],
    "columns_removed": []
}