Create app.py

app.py

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+import streamlit as st
+import google.generativeai as genai
+import os
+from dotenv import load_dotenv
+
+# Load API key from .env file
+load_dotenv()
+genai.configure(api_key=os.getenv("GEMINI_API_KEY"))
+
+# Initialize chat model
+model = genai.GenerativeModel("gemini-1.5-flash")
+
+# Streamlit UI
+st.title("🤖 AI Chatbot (Gemini 1.5 Flash)")
+
+# Add description
+st.markdown("""
+### About this Chatbot
+This is an AI-powered chatbot built using:
+* **Gemini 1.5 Flash** - Google's latest language model
+* **Streamlit** - For the interactive web interface
+* **Python** - For backend implementation
+
+The chatbot can help you with:
+- General questions and conversations
+- Writing and analysis tasks
+- Problem-solving and explanations
+""")
+
+st.write("Ask me anything!")
+
+# Store chat history
+if "messages" not in st.session_state:
+    st.session_state.messages = []
+
+# Display previous messages
+for msg in st.session_state.messages:
+    with st.chat_message(msg["role"]):
+        st.markdown(msg["content"])
+
+# Get user input
+user_input = st.chat_input("Type your message...")
+
+if user_input:
+    # Display user message
+    st.chat_message("user").markdown(user_input)
+
+    # Prepare chat history for context
+    chat_history = [
+        {"role": "user" if m["role"] == "user" else "model", "parts": [m["content"]]}
+        for m in st.session_state.messages
+    ]
+    
+    # Call Gemini API
+    response = model.generate_content(
+        contents=[{"role": "user", "parts": [user_input]}],
+        generation_config={"temperature": 0.7},
+        safety_settings=[]
+    )
+
+    bot_reply = response.text
+
+    # Display bot response
+    st.chat_message("assistant").markdown(bot_reply)
+
+    # Save conversation
+    st.session_state.messages.append({"role": "user", "content": user_input})
+    st.session_state.messages.append({"role": "assistant", "content": bot_reply})
+    
+    # Keep only last 3 message exchanges (6 messages total)
+    if len(st.session_state.messages) > 6:
+        st.session_state.messages = st.session_state.messages[-6:]