change examples to be random 15 images

app.py

@@ -1,6 +1,6 @@
 import gradio as gr
 from ultralytics import YOLO
-
+import random
 import os
 from pathlib import Path
 
@@ -49,7 +49,7 @@ with gr.Blocks() as demo:
         with gr.Column(2):
             inp = gr.Image(label='Input image', sources='upload')
         with gr.Column(1):
-            ex_list = [[ex_dir/i, i.split('_')[0]] for i in os.listdir(ex_dir)]
+            ex_list = random.sample([[ex_dir/i, i.split('_')[0]] for i in os.listdir(ex_dir)], 15)
             ex = gr.Examples(ex_list, inputs=[inp, loc],
                              cache_examples=False, examples_per_page=5,
                              label='Example UAV images')