Simon Willison’s Weblog

27th July 2025 - Link Blog

TIL: Exception.add_note (via) Neat tip from Danny Roy Greenfeld: Python 3.11 added a .add_note(message: str) method to the BaseException class, which means you can add one or more extra notes to any Python exception and they'll be displayed in the stacktrace!

Here's PEP 678 – Enriching Exceptions with Notes by Zac Hatfield-Dodds proposing the new feature back in 2021.

Posted 27th July 2025 at 11:07 pm

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This is a link post by Simon Willison, posted on 27th July 2025.

debugging 35 python 1,271

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