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PyCoder’s Weekly: Issue #739: JIT Delayed, Sandboxes, OpenRouter, and More (2026-06-16)
The Python Steering Council has halted JIT development pending a new PEP to address integration and approach questions. Simon Willison explored MicroPython and WASM for creating code sandboxes. Wallaby is a new VS Code tool offering real-time test results, runtime values, and debugging aid for Python developers. OpenRouter API allows access to multiple AI models with features like smart routing and cost controls. The scikit-learn 1.9 and Python 3.14.6/3.13.14 versions have been released. Marimo offers reproducible reactive notebooks that avoid hidden state and export to various formats. EuroPython 2026 will celebrate its 25th anniversary in Kraków, Poland. SQLPyHelper is a library providing a unified database API across multiple SQL variants with async support. Pyodide 3.14.0 now allows building and posting Pyodide wheels to PyPI. Several articles cover topics like perceptrons, Python type-checker overload, effective mocking in tests, and comparing AI code editors Cursor and Windsurf. Projects featured include a reliability layer for Celery, a Rust-based UUID replacement, trend detection in time series, Django health endpoints, and numerical circular buffers. Upcoming events include virtual office hours, talks on CPython on Android, and various PyData and PyLadies meetups.