from tkinter import *
import csv

def save_list():
    file = open('/tmp/ages.csv', 'a')
    name = name_box.get()
    age = age_box.get()
    newrecord = name + ', ' + age + '\n'
    file.write(str(newrecord))
    file.close()

def read_list():
    name_list.delete(0, 'end')
    file = list(csv.reader(open('/tmp/ages.csv')))
    tmp = []
    for row in file:
        tmp.append(row)
    x = 0
    for i in tmp:
        data = tmp[x]
        name_list.insert('end', data)
        x += 1

window = Tk()
window.title("Lista Personas")
window.geometry("400x200")

label1 = Label(text="Nombre")
label1.place(x=20, y=20, width=100, height=25)

name_box = Entry()
name_box.place(x=120, y=20, width=100, height=25)
name_box["justify"] = "left"
name_box.focus()

label2 = Label(text="Edad")
label2.place(x=20, y=50, width=100, height=25)

age_box = Entry()
age_box.place(x=120, y=50, width=100, height=25)
age_box["justify"] = "left"

button1 = Button(text="Agregar a archivo", command=save_list)
button1.place(x=250, y=20, width=100, height=25)

button2 = Button(text="Leer archivo", command=read_list)
button2.place(x=250, y=50, width=100, height=25)

label3 = Label(text="Registros:")
label3.place(x=20, y=80, width=100, height=25)

name_list = Listbox()
name_list.place(x=120, y=80, width=230, height=100)

window.mainloop()