array/loop practice

let arr = [
    {
        PERSON: {
            name: "Barry Johnson",
            age: 17,
            fav_color: "Green",
            list_of_hobbies: {
                hobby_1: "Music Production",
                hobby_2: "Video Production",
                hobby_3: "Shitposting" //dont judge Barry
            },
        },
    }
];

// will not work???
function console_print(arr){
    for(let i = 0; i < arr.length; i++){
       for(hobby in arr[i].list_of_hobbies){
            console.log(arr[i].list_of_hobbies[hobby]);
       }
    }
}

//will work???
function print_obj(arr){
    for(let i = 0; i < arr.length; i++){
        if(i % 2 == 0){
            console.log(arr[i]);
        }
    }
}

print_obj(arr);
console_print(arr);

//theres no html doc or anything its just linked to a blank html doc so I can use the console