Use constants for the default system prompt and examples

app.py

@@ -45,6 +45,54 @@ MODEL_IDS = [
     "Qwen/Qwen3-VL-8B-Instruct",  # https://huggingface.co/Qwen/Qwen3-VL-8B-Instruct
     "Qwen/Qwen3-VL-32B-Instruct",  # https://huggingface.co/Qwen/Qwen3-VL-32B-Instruct
 ]
+DEFAULT_SYSTEM_PROMPT = 'You are a helpful assistant to detect objects in images. When asked to detect elements based on a description, you return a valid JSON object containing bounding boxes for all elements in the form `[{"bbox_2d": [xmin, ymin, xmax, ymax], "label": "placeholder"}, ...]`. For example, a valid response could be: `[{"bbox_2d": [10, 30, 20, 60], "label": "placeholder"}, {"bbox_2d": [40, 15, 52, 27], "label": "placeholder"}]`.'
+EXAMPLES = [
+    [
+        EXAMPLES_DIR / "niklas-ohlrogge-niamoh-de-fDYRfHoRC4k-unsplash.jpg",
+        "Qwen/Qwen3-VL-4B-Instruct",
+        DEFAULT_SYSTEM_PROMPT,
+        "detect sailboat, rowboat, person",
+        512,
+        "Yes",
+        1920,
+    ],
+    [
+        EXAMPLES_DIR / "elevate-nYgy58eb9aw-unsplash.jpg",
+        "Qwen/Qwen3-VL-4B-Instruct",
+        DEFAULT_SYSTEM_PROMPT,
+        "detect shirt, jeans, jacket, skirt, sunglasses, earring, drink",
+        1024,
+        "Yes",
+        1920,
+    ],
+    [
+        EXAMPLES_DIR / "markus-spiske-oPDQGXW7i40-unsplash.jpg",
+        "Qwen/Qwen3-VL-4B-Instruct",
+        DEFAULT_SYSTEM_PROMPT,
+        "detect basketball, player with white jersey, player with black jersey",
+        512,
+        "Yes",
+        1920,
+    ],
+    [
+        EXAMPLES_DIR / "william-hook-9e9PD9blAto-unsplash.jpg",
+        "Qwen/Qwen3-VL-4B-Instruct",
+        DEFAULT_SYSTEM_PROMPT,
+        "detect app to find great places, app to take beautiful photos, app to listen music",
+        512,
+        "Yes",
+        1920,
+    ],
+    [
+        EXAMPLES_DIR / "tasso-mitsarakis-dw7Y4W6Rhmk-unsplash.jpg",
+        "Qwen/Qwen3-VL-4B-Instruct",
+        DEFAULT_SYSTEM_PROMPT,
+        "detect person, bicycle, netherlands flag",
+        1920,
+        "Yes",
+        1920,
+    ],
+]
 
 # Global variables to track loaded model
 current_model = None
@@ -111,11 +159,10 @@ with gr.Blocks() as demo:
                 choices=MODEL_IDS,
                 label="✨ Select Model ID",
             )
-            default_system_prompt = 'You are a helpful assistant to detect objects in images. When asked to detect elements based on a description, you return a valid JSON object containing bounding boxes for all elements in the form `[{"bbox_2d": [xmin, ymin, xmax, ymax], "label": "placeholder"}, ...]`. For example, a valid response could be: `[{"bbox_2d": [10, 30, 20, 60], "label": "placeholder"}, {"bbox_2d": [40, 15, 52, 27], "label": "placeholder"}]`.'
             system_prompt = gr.Textbox(
                 label="System Prompt",
                 lines=3,
-                value=default_system_prompt,
+                value=DEFAULT_SYSTEM_PROMPT,
             )
             default_user_prompt = "detect object"
             user_prompt = gr.Textbox(
@@ -320,54 +367,7 @@ with gr.Blocks() as demo:
                 cache_examples=True,
                 cache_mode="eager",
                 run_on_click=True,
-                examples=[
-                    [
-                        EXAMPLES_DIR
-                        / "niklas-ohlrogge-niamoh-de-fDYRfHoRC4k-unsplash.jpg",
-                        "Qwen/Qwen3-VL-4B-Instruct",
-                        default_system_prompt,
-                        "detect sailboat, rowboat, person",
-                        512,
-                        "Yes",
-                        1920,
-                    ],
-                    [
-                        EXAMPLES_DIR / "elevate-nYgy58eb9aw-unsplash.jpg",
-                        "Qwen/Qwen3-VL-4B-Instruct",
-                        default_system_prompt,
-                        "detect shirt, jeans, jacket, skirt, sunglasses, earring, drink",
-                        1024,
-                        "Yes",
-                        1920,
-                    ],
-                    [
-                        EXAMPLES_DIR / "markus-spiske-oPDQGXW7i40-unsplash.jpg",
-                        "Qwen/Qwen3-VL-4B-Instruct",
-                        default_system_prompt,
-                        "detect basketball, player with white jersey, player with black jersey",
-                        512,
-                        "Yes",
-                        1920,
-                    ],
-                    [
-                        EXAMPLES_DIR / "william-hook-9e9PD9blAto-unsplash.jpg",
-                        "Qwen/Qwen3-VL-4B-Instruct",
-                        default_system_prompt,
-                        "detect app to find great places, app to take beautiful photos, app to listen music",
-                        512,
-                        "Yes",
-                        1920,
-                    ],
-                    [
-                        EXAMPLES_DIR / "tasso-mitsarakis-dw7Y4W6Rhmk-unsplash.jpg",
-                        "Qwen/Qwen3-VL-4B-Instruct",
-                        default_system_prompt,
-                        "detect person, bicycle, netherlands flag",
-                        1920,
-                        "Yes",
-                        1920,
-                    ],
-                ],
+                examples=EXAMPLES,
                 inputs=[
                     image_input,
                     input_model_id,