如何在PySimpleGUI中从日期中删除时间

import PySimpleGUI as sg
from datetime import datetime

layout = [
    [sg.Text('选择日期：')],
    [sg.CalendarButton('选择日期', target='date_input', key='date_btn'), sg.Input(key='date_input')],
    [sg.Button('删除时间', key='delete_btn')]
]

window = sg.Window('删除时间示例', layout)

while True:
    event, values = window.read()

    if event == sg.WINDOW_CLOSED:
        break

    if event == 'delete_btn':
        date_input = values['date_input']
        date = datetime.strptime(date_input, '%Y-%m-%d')
        date_without_time = date.date()

        window['date_input'].update(date_without_time)

window.close()