Goose: 자율적 작업을 수행하는 무료 오픈소스 AI 코딩 에이전트 가이드

I'm in a new, empty directory. First, create a new Python script called analyze_stocks.py. In that script, write code to:
1. Use the yfinance library to download the last 3 months of daily stock data for Apple (AAPL) and Microsoft (MSFT).
2. Calculate the 20-day simple moving average for the closing price of each stock.
3. Create a single plot showing the closing prices and the moving averages for both stocks, with a legend.
4. Save the plot as stock_analysis.png.
Then, run the script. If there are any errors (like missing libraries), figure out how to fix them and run it again until it succeeds. Finally, let me know if the image was created successfully.