Make default scene selection random

app.py

@@ -1,5 +1,6 @@
 import json
 import math
+import random
 import os
 
 import gdown
@@ -17,6 +18,7 @@ with open("config.json") as f:
 MODEL_DIR = "models"
 
 SCENES_LIST = ["Mic", "Chair", "Lego", "Drums", "Ship", "Hotdog"]
+random_index = random.randint(0, len(SCENES_LIST) - 1)
 
 
 def select_model(obj_select):
@@ -92,7 +94,7 @@ st.markdown(
 )
 
 
-obj_select = st.selectbox("Select a Scene", SCENES_LIST, index=0)
+obj_select = st.selectbox("Select a Scene", SCENES_LIST, index=random_index)
 DIET_NERF_MODEL_NAME, DIET_NERF_FILE_ID, NERF_MODEL_NAME, NERF_FILE_ID = select_model(obj_select)