Update an example

Author: mdmintz

examples/desktop_apps/recorder.py

@@ -7,7 +7,7 @@
 if sys.version_info[0] < 3:
     raise Exception("This script is for Python 3 only!")
 import tkinter as tk
-from tkinter import messagebox
+from tkinter import messagebox  # noqa: E402
 
 
 def do_recording(file_name, url):