I need a Python expert to build logic for an automated Excel sheet that generates Buy/Sell signals for F&O stocks using Yahoo Finance data. This project is for personal use and needs to be completed ASAP. Key requirements: - Signals based on: - 9/18 EMA crossover - RSI above/below 48 - Supertrend & PSAR position - Timeframes: 5m, 15m, 1H, 4H, 1D (via dropdown) Ideal Skills and Experience: - Proficiency in Python - Experience with Yahoo Finance API - Strong understanding of trading indicators and Excel automation - Experience in developing financial tools or trading algorithms Please include relevant experience in your application.