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[ Module Hierarchy | Class Hierarchy ]

# Module Hierarchy

- elementtree.ElementTree
- lxml
  - lxml.ElementInclude: Limited XInclude support for the ElementTree package.
  - lxml.builder: The `E` Element factory for generating XML documents.
  - lxml.cssselect: CSS Selectors based on XPath.
  - lxml.doctestcompare: lxml-based doctest output comparison.
  - lxml.etree: The `lxml.etree` module implements the extended ElementTree API for XML.
  - lxml.html: The `lxml.html` tool set for HTML handling.
    - lxml.html.ElementSoup: Legacy interface to the BeautifulSoup HTML parser.
    - lxml.html._dictmixin
    - lxml.html._setmixin
    - lxml.html.builder: A set of HTML generator tags for building HTML documents.
    - lxml.html.clean: A cleanup tool for HTML.
    - lxml.html.defs
    - lxml.html.diff
    - lxml.html.formfill
    - lxml.html.soupparser: External interface to the BeautifulSoup HTML parser.
    - lxml.html.usedoctest: Doctest module for HTML comparison.
  - lxml.objectify: The `lxml.objectify` module implements a Python object API for XML.
  - lxml.pyclasslookup
  - lxml.sax: SAX-based adapter to copy trees from/to the Python standard library.
  - lxml.tests: The lxml test suite for lxml, ElementTree and cElementTree.
    - lxml.tests.common_imports
    - lxml.tests.test_classlookup: Tests for different Element class lookup mechanisms.
    - lxml.tests.test_css
    - lxml.tests.test_dtd: Test cases related to DTD parsing and validation
    - lxml.tests.test_elementtree: Tests for the ElementTree API
    - lxml.tests.test_errors
    - lxml.tests.test_etree: Tests specific to the extended etree API
    - lxml.tests.test_htmlparser: HTML parser test cases for etree
    - lxml.tests.test_io: IO test cases that apply to both etree and ElementTree
    - lxml.tests.test_nsclasses: Test cases related to namespace implementation classes and the namespace registry mechanism
    - lxml.tests.test_objectify: Tests specific to the lxml.objectify API
    - lxml.tests.test_pyclasslookup: Tests specific to the Python based class lookup.
    - lxml.tests.test_relaxng: Test cases related to RelaxNG parsing and validation
    - lxml.tests.test_sax: Test cases related to SAX I/O
    - lxml.tests.test_schematron: Test cases related to Schematron parsing and validation
    - lxml.tests.test_threading: Tests for thread usage in lxml.etree.
    - lxml.tests.test_unicode
    - lxml.tests.test_xmlschema: Test cases related to XML Schema parsing and validation
    - lxml.tests.test_xpathevaluator: Test cases related to XPath evaluation and the XPath class
    - lxml.tests.test_xslt: Test cases related to XSLT processing
  - lxml.usedoctest: Doctest module for XML comparison.