create tkniter window with a planner in matlab

main.py
import tkinter as tk
from tkinter import ttk
from tkcalendar import Calendar, DateEntry
 
def select_date():
    date_entry = DateEntry(window)
    date_entry.pack()
 
def create_planner():
    planner = ttk.Treeview(window)
    planner.pack()
 
window = tk.Tk()
window.geometry("500x500")
 
date_button = tk.Button(window, text = "Select Date", command = select_date)
date_button.pack()
 
planner_button = tk.Button(window, text = "Create Planner", command = create_planner)
planner_button.pack()
 
window.mainloop()
518 chars
23 lines