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Exception Groups and except*

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Exception Groups and except*
PyCon UK 2022

Python 3.11 introduces new features that make it possible to raise and handle multiple unrelated exceptions. This talk briefly covers what they do and how they work, and answers a frequently asked question: why we needed to add new language syntax to handle exception groups.

Python 3.11 introduces new features that make it possible to raise and handle multiple unrelated exceptions at the same time (see PEP 654). This talk, given by one of the authors of PEP 654, will describe how they work and some of the design decisions we made while developing these features. In particular, why we needed to add the new syntax except\* to handle exception groups.

Speakers: Irit Katriel