Python XML Parsing — ELI5

Imagine labeling every item in your house with sticky notes.

Your bookshelf gets a note saying “bookshelf.” Each shelf inside it says “shelf.” Each book on the shelf says “book” with the title written on the note.

That’s basically what XML does with data.

Everything gets wrapped in matching tags:

<bookshelf>
  <book>
    <title>Harry Potter</title>
    <author>J.K. Rowling</author>
  </book>
  <book>
    <title>The Hobbit</title>
    <author>J.R.R. Tolkien</author>
  </book>
</bookshelf>

Each piece of data has an opening tag (<title>) and a closing tag (</title>). Tags can be nested inside other tags, creating a tree structure.

Where you still see XML:

• RSS and Atom feeds (news and blog updates)
• Microsoft Office files (Word, Excel inside are XML)
• Banking and healthcare systems
• SOAP web services (older APIs)
• SVG images and Android layouts

Why XML feels old-fashioned:

XML was the king of data formats in the 2000s. Then JSON came along and was simpler, smaller, and easier to work with. Most new projects use JSON.

But XML isn’t going away. Too many important systems depend on it.

Python and XML:

Python comes with XML tools built in. You can parse an XML file, navigate the tag tree, find specific elements, and extract the data you need — all without installing anything extra.

One Thing to Remember

XML wraps data in nested labeled tags like Russian dolls — Python’s built-in libraries parse this tree structure so you can extract exactly the information you need.