fix description and make more similar to original

app.py

@@ -5,13 +5,19 @@ import openai
 import pinecone
 import json
 import re
+import os
 
 PINECONE_API_KEY = st.secrets["PINECONE_API_KEY"]
+# Set OpenAI API key from Streamlit Secrets
 OPENAI_API_KEY = st.secrets["OPENAI_API_KEY"]
+# Set maximum token length
+MAX_TOKENS = 1024
+# Set OpenAI model
+MODEL = "text-davinci-003"
 
 class Metadata(TypedDict):
     title: str
-    description
+    description: str
     slides: str
 
 # Initialize Pinecone and OpenAI
@@ -59,9 +65,9 @@ def fetch_lesson(query: str):
 # OpenAI prompt generation function
 def query_openai(prompt) -> str:
     response = openai.Completion.create(
-        engine="text-davinci-003",
+        engine=MODEL,
         prompt=prompt,
-        max_tokens=1024,
+        max_tokens=MAX_TOKENS,
         n=1,
         stop=None,
         temperature=0.7,
@@ -95,8 +101,9 @@ def format_metadata(metadata) -> List[str]:
     return f"Title: {metadata['title']}\n\nDescription: {metadata['description']}"
 
 # Streamlit UI
+st.set_page_config(layout="centered")
 st.title("Personalized Learning Curriculum Generator")
-user_input = st.text_input("Enter what you want to learn:")
+user_input = st.text_area("Enter what you want to learn:", height=200)
 submit_button = st.button("Generate response")
 status = st.empty()