main.py

from tkinter import *

# car = ["Agya", "Calya", "Pajero"]

# {
# merk: "Agya",
# plat: "...",
# harga: "Rp 10.000"
# }

car = [
    { "id": 1, "merk": "Agya", "plat": "", "harga": "" }, # 0
    { "id": 2, "merk": "Calya", "plat": "", "harga": "" } # 1
]

def info(car):
    # panggil sqlite
    stmt = "INSERT INTO mobil (merk, plat, harga) VALUES (?, ?, ?)"

    # sqlite.execute(stmt, car["merk"], car["plat"], car["harga"])

for index in range(len(car)):
    c = car[index] # { "id": 1, "merk": "Agya", "plat": "", "harga": "" }
    radio_button = RadioButton(c["merk"], command=lambda: info(c))
    radio_button.grid(row=0, column=1)
    # ...

    # message = c["merk"] + " harganya " + c["harga"] + " dengan plat nomer " + c["plat"] 
    # DialogBox(message)