Closing an image opened by Pillow in Window Photo Viewer

[snippsat]

You can do it like this,i use use webbrowser module.
If not given a url but a path it open my default image viewer(IrfanView) on Windows.
So it will show image for 3-sec and close IrfanView ect..
I do this with subprocess module.

import webbrowser
import subprocess
import os, time

for file in os.scandir('.'):
    if file.name.endswith(('.jpg', '.png')):
        webbrowser.open(file.name)
        time.sleep(3)
        subprocess.run(['taskkill', '/f', '/im', 'i_view32.exe'])

Output:
E:\1py_div\image_loop
λ python img.py
SUCCESS: The process "i_view32.exe" with PID 15912 has been terminated.
SUCCESS: The process "i_view32.exe" with PID 20024 has been terminated.
SUCCESS: The process "i_view32.exe" with PID 7376 has been terminated.
SUCCESS: The process "i_view32.exe" with PID 11028 has been terminated.
SUCCESS: The process "i_view32.exe" with PID 13252 has been terminated.

You see it close process,you most find process name for Windows Photo Viewer.