XPath: a query language for HTML and XML. It can find nodes in the tree structure of XML and HTML
To install XPath:
PIP method: PIP install lxml
Win + R: CMD open command console:
You can see that XML has been installed
A kind of standard and standard of web page. The main language for writing web documents. Hypertext link
Uniform resource locator (unique resource locator) can accurately indicate the location of the file and the way the browser handles it.