Official and Primary References

Python language and standard library

• Python documentation
  https://docs.python.org/

• Python language reference
  https://docs.python.org/3/reference/

• Python standard library
  https://docs.python.org/3/library/

• Python typing
  https://docs.python.org/3/library/typing.html

• Dataclasses
  https://docs.python.org/3/library/dataclasses.html

• Asyncio
  https://docs.python.org/3/library/asyncio.html

• Contextlib
  https://docs.python.org/3/library/contextlib.html

• Import system
  https://docs.python.org/3/reference/import.html

• Logging
  https://docs.python.org/3/library/logging.html

• Profiling
  https://docs.python.org/3/library/profile.html

• Tracemalloc
  https://docs.python.org/3/library/tracemalloc.html

Packaging

• Python Packaging User Guide
  https://packaging.python.org/

• pyproject.toml specification
  https://packaging.python.org/en/latest/specifications/pyproject-toml/

• Packaging projects tutorial
  https://packaging.python.org/en/latest/tutorials/packaging-projects/

• Dependency groups
  https://packaging.python.org/en/latest/specifications/dependency-groups/

• src layout discussion
  https://packaging.python.org/en/latest/discussions/src-layout-vs-flat-layout/

Testing

• pytest documentation
  https://docs.pytest.org/

• unittest.mock
  https://docs.python.org/3/library/unittest.mock.html

Architecture guidance

Architecture decisions in this batch are synthesis and engineering guidance rather than one official Python standard.

Use primary documentation for concrete library behavior and verify the selected framework, database driver, migration tool, broker client, and observability library against their official documentation.