A variety of pages show examples (or provide explanations) around single-phase init modules and static types, but should focus on the newer, recommended alternatives. For example:

• https://docs.python.org/3/extending/extending.html#intermezzo-errors-and-exceptions
  https://github.com/python/cpython/blob/main/Doc/extending/extending.rst?plain=1#L206-L265
• https://docs.python.org/3/extending/extending.html#the-module-s-method-table-and-initialization-function
  https://github.com/python/cpython/blob/main/Doc/extending/extending.rst?plain=1#L355-L379
• https://docs.python.org/3/extending/newtypes_tutorial.html
  https://github.com/python/cpython/blob/main/Doc/extending/newtypes_tutorial.rst
• https://docs.python.org/3/extending/newtypes.html
  https://github.com/python/cpython/blob/main/Doc/extending/newtypes.rst
• https://docs.python.org/3/extending/embedding.html#extending-embedded-python
  https://github.com/python/cpython/blob/main/Doc/extending/embedding.rst?plain=1#L225

For reference:

• https://docs.python.org/3/howto/isolating-extensions.html#isolating-extensions-howto
• https://docs.python.org/3/c-api/module.html
• https://docs.python.org/3/c-api/type.html#creating-heap-allocated-types

Linked PRs

• gh-134160: Use multi-phase init in documentation examples #134296
• [3.14] gh-134160: Use multi-phase init in documentation examples (GH-134296) #134753
• [3.13] gh-134160: Use multi-phase init in documentation examples (GH-134296) #134754
• GH-134160: Prefer multi-phase initialisation in docs #134764
• gh-134160: Block multiple module initialization #134773
• gh-134160: Improve multi-phase init note on isolation & subinterpreters #134775
• [3.14] gh-134160: Block multiple module initialization (GH-134773) #134827
• [3.13] gh-134160: Block multiple module initialization (GH-134773) #134828
• [3.14] gh-134160: Improve multi-phase init note on isolation & subinterpreters (GH-134775) #134932
• [3.13] gh-134160: Improve multi-phase init note on isolation & subinterpreters (GH-134775) #134983
• gh-134160: Split extension module init from PyModule docs; emphasize multi-phase init #135126
• gh-134160: Use PyModuleDef.m_free in the example module xxlimited #135174
• [3.14] gh-134160: Use PyModuleDef.m_free in the example module xxlimited (GH-135174) #135213
• [3.13] gh-134160: Use PyModuleDef.m_free in the example module xxlimited (GH-135174) #135214
• [3.14] gh-134160: Split extension module init from PyModule docs; emphasize multi-phase init (GH-135126) #135470
• gh-134160: Add more comments for the xxlimited module #140214
• [3.14] gh-134160: Add more comments for the xxlimited module (GH-140214) #140664
• gh-134160: Start "Extending and embedding" with a Diataxis-style tutorial #142314
• gh-134160: "First extension module" tutorial improvements #144183