Update app.py

app.py

@@ -10,7 +10,7 @@ _assistant, _thread = None, None
 def show_json(str, obj):
     print(f"=> {str}\n{json.loads(obj.model_dump_json())}")
 
-def init_assistant(client):
+def create_assistant(client):
     assistant = client.beta.assistants.create(
         name="Math Tutor",
         instructions="You are a personal math tutor. Answer questions briefly, in a sentence or less.",
@@ -19,7 +19,7 @@ def init_assistant(client):
     show_json("assistant", assistant)
     return assistant
     
-def init_thread(client):
+def create_thread(client):
     thread = client.beta.threads.create()
     show_json("thread", thread)
     return thread
@@ -44,14 +44,11 @@ def extract_content_values(data):
 def chat(message, history, openai_api_key):
     global _client, _assistant, _thread     
        
-    if _client == None:
-        _client = init_client()
-
     if _assistant == None:
-        _assitant = init_assistant(_client)
+        _assistant = create_assistant(_client)
 
     if _thread == None:
-        _thread = init_thread(_client)
+        _thread = create_thread(_client)
         
     message = _client.beta.threads.messages.create(
         role="user",