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This library adheres to Semantic Versioning 2.0.

1.2.1

  • Updated the copying of __notes__ to match CPython behavior (PR by CF Bolz-Tereick)
  • Corrected the type annotation of the exception handler callback to accept a BaseExceptionGroup instead of BaseException
  • Fixed type errors on Python < 3.10 and the type annotation of suppress() (PR by John Litborn)

1.2.0

  • Added special monkeypatching if Apport has overridden sys.excepthook so it will format exception groups correctly (PR by John Litborn)
  • Added a backport of contextlib.suppress() from Python 3.12.1 which also handles suppressing exceptions inside exception groups
  • Fixed bare raise in a handler reraising the original naked exception rather than an exception group which is what is raised when you do a raise in an except* handler

1.1.3

  • catch() now raises a TypeError if passed an async exception handler instead of just giving a RuntimeWarning about the coroutine never being awaited. (#66, PR by John Litborn)
  • Fixed plain raise statement in an exception handler callback to work like a raise in an except* block
  • Fixed new exception group not being chained to the original exception when raising an exception group from exceptions raised in handler callbacks
  • Fixed type annotations of the derive(), subgroup() and split() methods to match the ones in typeshed

1.1.2

  • Changed handling of exceptions in exception group handler callbacks to not wrap a single exception in an exception group, as per CPython issue 103590

1.1.1

  • Worked around CPython issue #98778, urllib.error.HTTPError(..., fp=None) raises KeyError on unknown attribute access, on affected Python versions. (PR by Zac Hatfield-Dodds)

1.1.0

  • Backported upstream fix for gh-99553 (custom subclasses of BaseExceptionGroup that also inherit from Exception should not be able to wrap base exceptions)
  • Moved all initialization code to __new__() (thus matching Python 3.11 behavior)

1.0.4

  • Fixed regression introduced in v1.0.3 where the code computing the suggestions would assume that both the obj attribute of AttributeError is always available, even though this is only true from Python 3.10 onwards (#43; PR by Carl Friedrich Bolz-Tereick)

1.0.3

  • Fixed monkey patching breaking suggestions (on a NameError or AttributeError) on Python 3.10 (#41; PR by Carl Friedrich Bolz-Tereick)

1.0.2

  • Updated type annotations to match the ones in typeshed

1.0.1

  • Fixed formatted traceback missing exceptions beyond 2 nesting levels of __context__ or __cause__

1.0.0

  • Fixed AttributeError: 'PatchedTracebackException' object has no attribute '__cause__' on Python 3.10 (only) when a traceback is printed from an exception where an exception group is set as the cause (#33)
  • Fixed a loop in exception groups being rendered incorrectly (#35)
  • Fixed the patched formatting functions (format_exception()etc.) not passing the compact=True flag on Python 3.10 like the original functions do

1.0.0rc9

  • Added custom versions of several traceback functions that work with exception groups even if monkey patching was disabled or blocked

1.0.0rc8

  • Don't monkey patch anything if sys.excepthook has been altered
  • Fixed formatting of SyntaxError in the monkey patched TracebackException.format_exception_only() method

1.0.0rc7

  • BACKWARDS INCOMPATIBLE Changed catch() to not wrap an exception in an exception group if only one exception arrived at catch() and it was not matched with any handlers. This was to match the behavior of except*.

1.0.0rc6

  • BACKWARDS INCOMPATIBLE Changed catch() to match the behavior of except*: each handler will be called only once per key in the handlers dictionary, and with an exception group as the argument. Handlers now also catch subclasses of the given exception types, just like except*.

1.0.0rc5

  • Patch for traceback.TracebackException.format_exception_only() (PR by Zac Hatfield-Dodds)

1.0.0rc4

  • Update PEP 678 support to use .add_note() and __notes__ (PR by Zac Hatfield-Dodds)

1.0.0rc3

  • Added message about the number of sub-exceptions

1.0.0rc2

  • Display and copy __note__ (draft PEP 678) if available (PR by Zac Hatfield-Dodds)

1.0.0rc1

  • Initial release