Python Sitemap Scraping Script

I need a Python script to scrape product data from sitemaps. The data will be used for price comparison.

The script should do the following:
- Use product sitemaps to scrape all URLs.
- Extract product structured data, including:
- Product Name
- Price
- EAN
- GTIN
- Stock status

The data needs to be able to be exported to excel.

Requirements:
- Experience with Python and web scraping
- Familiarity with handling sitemaps and structured data
- Ability to deliver clean, well-documented code