Reading a chained traceback

A chained traceback prints the newest exception last, so the line read first is usually the symptom rather than the cause. This chapter reads the blocks in the order they happened, separates implicit chaining inside an except block from an explicit raise-from, and locates the call boundary — the last of your own frames before the stack descends into a library. It also covers keeping the chain alive as far as the log, and shrinking a 38-minute job into a reproduction that runs in a second.

Python for AI work — read the current version at https://daviddominguez.dev/learn/en/python-for-ai-work/reading-a-chained-traceback

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