Create app.py

app.py

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+import streamlit as st
+import pandas as pd
+import duckdb
+import requests
+import re
+import io
+
+# 🔐 Set your Together API key securely
+TOGETHER_API_KEY = st.secrets["TOGETHER_API_KEY"] if "TOGETHER_API_KEY" in st.secrets else st.text_input("Enter Together API Key", type="password")
+
+# 🧠 Generate SQL using Together API
+def generate_sql_from_prompt(prompt, df):
+    schema = ", ".join([f"{col} ({str(dtype)})" for col, dtype in df.dtypes.items()])
+    full_prompt = f"""
+You are a SQL expert. Here is a table called 'df' with the following schema:
+{schema}
+
+User question: "{prompt}"
+
+Write a valid SQL query using the 'df' table. Return only the SQL code.
+"""
+    url = "https://api.together.xyz/v1/chat/completions"
+    headers = {
+        "Authorization": f"Bearer {TOGETHER_API_KEY}",
+        "Content-Type": "application/json"
+    }
+    payload = {
+        "model": "mistralai/Mixtral-8x7B-Instruct-v0.1",
+        "messages": [{"role": "user", "content": full_prompt}],
+        "temperature": 0.2,
+        "max_tokens": 200
+    }
+
+    response = requests.post(url, headers=headers, json=payload)
+    response.raise_for_status()
+    result = response.json()
+    return result['choices'][0]['message']['content'].strip("```sql").strip("```").strip()
+
+# 🧽 Clean SQL for DuckDB
+def clean_sql_for_duckdb(sql, df_columns):
+    sql = sql.replace("`", '"')
+    for col in df_columns:
+        if " " in col and f'"{col}"' not in sql:
+            pattern = r'\b' + re.escape(col) + r'\b'
+            sql = re.sub(pattern, f'"{col}"', sql)
+    return sql
+
+# === Streamlit UI ===
+st.set_page_config(page_title="🧠 Excel SQL Chatbot", layout="centered")
+st.title("📊 Excel SQL Chatbot with LLM")
+st.markdown("Upload your **Excel file**, ask a question in natural language, and get results from SQL queries generated by an LLM.")
+
+uploaded_file = st.file_uploader("📂 Upload Excel file", type=["xlsx"])
+
+if uploaded_file and TOGETHER_API_KEY:
+    df = pd.read_excel(uploaded_file)
+    st.success(f"✅ Loaded: {uploaded_file.name} with shape {df.shape}")
+    st.dataframe(df.head(), use_container_width=True)
+
+    user_prompt = st.text_input("💬 Ask a question about your data")
+
+    if st.button("🚀 Generate SQL & Run") and user_prompt:
+        try:
+            sql_query = generate_sql_from_prompt(user_prompt, df)
+            cleaned_sql = clean_sql_for_duckdb(sql_query, df.columns)
+
+            st.code(sql_query, language="sql")
+
+            con = duckdb.connect()
+            con.register("df", df)
+            result_df = con.execute(cleaned_sql).fetchdf()
+
+            st.success("✅ Query executed successfully")
+            st.dataframe(result_df, use_container_width=True)
+
+        except Exception as e:
+            st.error(f"❌ Error: {e}")
+else:
+    st.info("🔑 Please upload a file and provide the API key to continue.")