lxml is a Python library for working with XML and HTML. It provides a number of ways to parse and interact with these formats, including the use of xpath expressions to search for specific elements in a document. lxml also includes a number of other useful features for working with XML and HTML, such as support for parsing and generating these formats, as well as support for working with different encodings and character sets.

lxml is a powerful and efficient library for parsing and manipulating XML and HTML documents in Python. It is built on top of the C libraries libxml2 and libxslt, which means it can handle very large documents quickly and efficiently. Additionally, lxml provides a simple and consistent API that makes it easy to work with XML and HTML documents in Python.

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