: A minimal implementation of the Document Object Model. It is useful if you are already familiar with the DOM API from JavaScript, but it can be memory-intensive as it loads the entire document into RAM.
The xml.etree.ElementTree module is the go-to choice for most Python developers because it is part of the standard library and offers a simple, hierarchical API.
: Significantly faster than the built-in ElementTree for large files. How to parse xml using python
For most projects, is the best starting point due to its zero-dependency nature. However, if you find yourself needing advanced selection logic or processing multi-gigabyte files, switching to lxml is the logical next step.
: An event-driven parser that doesn't load the whole file. It triggers "events" (like startElement or endElement ) as it reads the file. This is the only viable option for parsing XML files that are larger than your available system memory. Summary of Library Selection ElementTree Availability Third-party ( pip install lxml ) Ease of Use Performance XPath Support : A minimal implementation of the Document Object Model
: It represents an XML document as a tree, where each node is an Element .
: Unlike the basic path support in ElementTree , lxml supports full XPath 1.0, allowing you to select nodes with sophisticated logic (e.g., //book[price > 30]/title ). : Significantly faster than the built-in ElementTree for
import xml.etree.ElementTree as ET # Parsing from a string root = ET.fromstring(' Python Guide ') # Accessing the root tag and attributes print(f"Root: {root.tag}") # Finding specific elements for book in root.findall('book'): title = book.find('title').text print(f"Book ID {book.get('id')}: {title}") Use code with caution. Copied to clipboard 2. High-Performance Parsing: lxml