PyTidyLib is a Python package that wraps the HTML Tidy library. This allows you, from Python code, to “fix” invalid (X)HTML markup. Some of the library’s many capabilities include:

* Clean up unclosed tags and unescaped characters such as ampersands * Output HTML 4 or XHTML, strict or transitional, and add missing doctypes * Convert named entities to numeric entities, which can then be used in XML documents without an HTML doctype. * Clean up HTML from programs such as Word (to an extent) * Indent the output, including proper (i.e. no) indenting for pre elements, which some (X)HTML indenting code overlooks.

This is the Python 3 version of the module.