import time
import clr
clr.AddReference('System.Windows.Forms')
from System.Windows.Forms import Application, Button, Form

form = Form()
form.Text = 'Hello World'

def onClick(sender, eventArgs):
    form.Text = 'Thanks for clicking at ' + time.asctime()

button = Button(Text="Please click")
button.Click += onClick

form.Controls.Add(button)

Application.Run(form)