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Profiling web-edit with Python 3.15: flame graphs and source heatmaps.

Simon Willison's WeblogAnalysis or commentary·
AI brief

A new profiler in Python 3.15 was tested by running it against a web-edit app to produce flame graphs and source heatmaps.

Written by AI from Simon Willison's Weblog's published text.

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“Research: Profiling web-edit with Python 3.15: flame graphs and source heatmaps I put the new Python 3.15 profiler through its paces by having GPT-6 Astra Extra High in Codex run it against my new web-edit app : I need a Python 3.15 flame graph and heatmap…”
Simon Willison's Weblog, 12 Oct 2026, 16:58.

Interpretation or community commentary rather than straight reporting.

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