Create app.py

app.py

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+import streamlit as st
+from openai import OpenAI  # Changed import
+
+# Set up OpenAI API key
+client = OpenAI(api_key=st.secrets["OPENAI_API_KEY"]) # Changed to client
+
+# Initialize session state for messages
+if "messages" not in st.session_state:
+    st.session_state.messages = []
+
+# Display existing messages
+for message in st.session_state.messages:
+    with st.chat_message(message["role"]):
+        st.markdown(message["content"])
+
+# Chat input
+prompt = st.chat_input("Say something")
+
+if prompt:
+    # Add user message to session state
+    st.session_state.messages.append({"role": "user", "content": prompt})
+    with st.chat_message("user"):
+        st.markdown(prompt)
+
+    # Get OpenAI response
+    completion = client.chat.completions.create( # Changed to client
+        model="gpt-3.5-turbo",
+        messages=[
+            {"role": m["role"], "content": m["content"]}
+            for m in st.session_state.messages
+        ]
+    )
+    response = completion.choices[0].message.content
+
+    # Add assistant message to session state
+    st.session_state.messages.append({"role": "assistant", "content": response})
+    with st.chat_message("assistant"):
+        st.markdown(response)