When we are using list records field then it returns a large amount of meta-information (client programs also use list records field) which should be filtered before printing, string(the field's label) are the most interesting items for a human user and as it show the database value in list records for example you can see the below code.

models.execute_kw(
    db, uid, password, 'res.partner', 'fields_get',
    [], {'attributes': ['string', 'help', 'demo']})
{
    "ean13": {
        "type": "char",
        "help": "BarCode",
        "string": "EAN13"
    },
    "property_account_position": {
        "type": "many2one",
        "help": "Tfor test.",
        "string": "demo"
    },
    "signup_valid": {
        "type": "boolean",
        "help": "",
        "string": "Signup Token is Valid"
    },
    "date_localization": {
        "type": "date",
        "help": "",
        "string": "Geo Localization Date"
    },
    "ref_companies": {
        "type": "one2many",
        "help": "",
        "string": "Companies that refers to partner"
    },
    "sale_order_count": {
        "type": "integer",
        "help": "",
        "string": "# of Sales Order"
    },
    "purchase_order_count": {
        "type": "integer",
        "help": "",
        "string": "# of Purchase Order"
    },

Note- fields_get() can be used to inspect a model's fields and check which ones seem to be of interest.