Py-exceptiongroup

Jul 20, 2023

Backport of PEP 654 (exception groups)

This is a backport of the BaseExceptionGroup and ExceptionGroup classes from Python 3.11.

It contains the following

  • The exceptiongroup.BaseExceptionGroup and exceptiongroup.ExceptionGroup classes
  • A utility function exceptiongroup.catch for catching exceptions possibly nested in an exception group
  • Patches to the TracebackException class that properly formats exception groups installed on import
  • An exception hook that handles formatting of exception groups through TracebackException installed on import

If this package is imported on Python 3.11 or later, the built-in implementations of the exception group classes are used instead, TracebackException is not monkey patched and the exception hook won’t be installed.



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