fix: correct message role history

.gitignore

@@ -1,3 +1,9 @@
 .env
 
-.venv
+.venv
+
+__pycache__
+
+.vscode
+
+.idea

app.py

@@ -61,11 +61,10 @@ def get_model_response(messages):
     )
 
 def respond(message, history, system_message):
-    conversation = [{"role": "system", "content": system_message}]
-    for human, assistant in history:
-        conversation.append({"role": "user", "content": human})
-        conversation.append({"role": "assistant", "content": assistant})
-    conversation.append({"role": "user", "content": message})
+    if not hasattr(respond, 'conversation'):
+        respond.conversation = [{"role": "system", "content": system_message}]
+
+    respond.conversation.append({"role": "user", "content": message})
 
     available_functions = {
         "evaluate_math_expression": evaluate_math_expression,
@@ -73,9 +72,9 @@ def respond(message, history, system_message):
 
     function_calls = []
     while True:
-        response = get_model_response(conversation)
+        response = get_model_response(respond.conversation)
         response_message = response.choices[0].message
-        conversation.append(response_message)
+        respond.conversation.append(response_message)
 
         if not response_message.tool_calls and response_message.content is not None:
             break
@@ -88,7 +87,7 @@ def respond(message, history, system_message):
                 }
                 function_calls.append(function_call)
                 function_response = call_function(tool_call, available_functions)
-                conversation.append(function_response)
+                respond.conversation.append(function_response)
                 function_calls.append({
                     "name": function_response["name"],
                     "result": json.loads(function_response["content"])