Update app.py

app.py

@@ -12,7 +12,7 @@ bi_model = AutoModel.from_pretrained(bi_encoder_model_name)
 
 # Set up OpenAI client
 api_key = os.getenv('OPENAI_API_KEY')
-openai.api_key = api_key
+client = OpenAI(api_key=api_key)
 
 # Define a system message to introduce Exos
 system_message = "You are Exos, a helpful assistant specializing in Exoplanet research. Provide detailed and accurate responses related to Exoplanet research."
@@ -36,7 +36,7 @@ def generate_response(user_input, relevant_context="", max_tokens=150, temperatu
     else:
         combined_input = f"Question: {user_input}\nAnswer:"
     
-    response = openai.ChatCompletion.create(
+    response = client.chat.completions.create(
         model="gpt-4",
         messages=[
             {"role": "system", "content": system_message},