Update app.py

app.py

@@ -1,12 +1,27 @@
 from smolagents import CodeAgent, DuckDuckGoSearchTool, load_tool, tool, HfApiModel
-
 from tools.final_answer import FinalAnswerTool
+import Gradio_UI       # ← we’ll patch its stream_to_gradio
 from Gradio_UI import GradioUI
 
 import datetime
 import pytz
 import yaml
 
+# --- Monkey-patch to guard against None token counts ─────────────
+# Wrap the original stream_to_gradio so that None → 0 for token counting
+_original_stream = Gradio_UI.stream_to_gradio
+def _patched_stream_to_gradio(agent, task, reset_agent_memory=False):
+    for msg in _original_stream(agent, task, reset_agent_memory):
+        # ensure these are ints
+        if agent.model.last_input_token_count is None:
+            agent.model.last_input_token_count = 0
+        if agent.model.last_output_token_count is None:
+            agent.model.last_output_token_count = 0
+        yield msg
+
+Gradio_UI.stream_to_gradio = _patched_stream_to_gradio
+# ────────────────────────────────────────────────────────────────────
+
 
 # --- Custom Tool Example (You can edit this) ---
 def my_custom_tool(arg1: str, arg2: int) -> str:
@@ -34,15 +49,18 @@ def get_current_time_in_timezone(timezone: str) -> str:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
 
-# --- Load Inference Model ---
+# --- Load and configure model ---
 final_answer = FinalAnswerTool()
-
 model = HfApiModel(
     model_id='Qwen/Qwen3-Coder-30B-A3B-Instruct',
     max_tokens=2096,
     temperature=0.5,
 )
 
+# initialize counters so they're never None
+model.last_input_token_count = 0
+model.last_output_token_count = 0
+
 
 # --- Load System Prompts ---
 with open("prompts.yaml", 'r') as stream:
@@ -51,25 +69,18 @@ with open("prompts.yaml", 'r') as stream:
 # --- Load External Tools ---
 image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 
-# You can load more tools here if needed:
-# search_tool = DuckDuckGoSearchTool()  # Optional
-
 # --- Create the Agent ---
 agent = CodeAgent(
     model=model,
     tools=[
         final_answer,
         image_generation_tool,
-        # search_tool,  # Uncomment if you want web search capability
-        # my_custom_tool,  # Uncomment and register below if converting this to a tool object
-        # get_current_time_in_timezone  # Also needs to be wrapped as a tool
+        # DuckDuckGoSearchTool(),                # optional
+        # tool(my_custom_tool),                  # if you decorate it
+        # tool(get_current_time_in_timezone),    # likewise
     ],
     max_steps=6,
     verbosity_level=1,
-    grammar=None,
-    planning_interval=None,
-    name=None,
-    description=None,
     prompt_templates=prompt_templates
 )