I have a set of PDFs where the content I need sits in clearly defined lists; each list represents one invoice. I want a short, reliable Python script that: • Reads every PDF in a given folder. • Detects each invoice-style list inside the file (they are plain text, not tables or images). • Maps specific list items to pre-named columns in an existing Excel workbook. • Appends each new invoice as a fresh row without disturbing the current data. The finished deliverable should include: 1. The well-commented .py file built with common libraries such as pdfplumber (or similar), pandas, and openpyxl. 2. A brief README explaining any required installs and how to run the script on my machine. 3. A test run using two sample PDFs that proves every list item lands in the correct column. Keep the solution lightweight; no GUI is needed—just a command-line script that gets the job done quickly and accurately.