random hash function of user management

gradio_ui.py

@@ -29,7 +29,7 @@ from stable_diffusion_holder import StableDiffusionHolder
 import gradio as gr
 from dotenv import find_dotenv, load_dotenv
 import shutil
-import random
+import uuid
 from utils import get_time, add_frames_linear_interp
 from huggingface_hub import hf_hub_download
 
@@ -163,7 +163,7 @@ class BlendingFrontend():
             self.user_id = list_ui_vals[list_ui_keys.index('user_id')]
         else:
             # generate new user id
-            self.user_id = ''.join((random.choice('ABCDEFGHIJKLMNOPQRSTUVWXYZ') for i in range(8)))
+            self.user_id = uuid.uuid4().hex
             print(f"made new user_id: {self.user_id} at {get_time('second')}")
 
     def save_latents(self, fp_latents, list_latents):