PyCoder’s Weekly: Issue #711: pairwise(), Mocks, Claude, and More (Dec. 2, 2025)

This issue of PyCoder's Weekly highlights several Python topics. Rodrigo Girão Serrão explains the general use and limitations of `itertools.pairwise`. Ned Batchelder discusses why overly aggressive mocks can cause future testing issues. Temporal offers a sponsored solution for orchestrating multi-agent AI systems with Python. A Real Python course covers getting started with Claude Code for Python projects. PyCon Austria 2026 registration is now open. The Python Software Foundation released a transparency report from its Code of Conduct Working Group. Microsoft announced a SQL Server Python Driver. Articles cover PyPI security against threats like "Shai-Hulud," understanding POST content types with Django examples, and implementing HTTP Bearer Authentication in Django. Pydantic's expanding features, including its settings loader, are explored. The issue clarifies why Django's `DATETIME_FORMAT` might not behave as expected and how to force a 24-hour clock. It also details disabling network requests during `pytest` and proper Python code indentation, including using formatters like Black and Ruff. Guido van Rossum discusses the enduring appeal of Python and its future. Positron's AI is presented as a data science-focused coding assistant. Advent of Code is recommended as a skill-improvement tool, and a guide on converting bytes to strings in Python is provided. Several projects and code resources are listed, alongside upcoming Python events and meetups worldwide.