Bug report

Bug description:

Hi.

I noticed that usingadd_note() with an error of typeSyntaxError (or its derived such asIndentationError andTabError) produces a traceback without the expected notes.

Here is a minimal reproducible example:

try:exec("a = 7 *")exceptSyntaxErrorase:e.add_note("Note")raise

Or alternatively:

e=SyntaxError("invalid syntax", ("<string>",1,8,"a = 7 *\n",1,8))e.add_note("Note")raisee

The output of these examples is:

Traceback (mostrecentcalllast):File"/home/delgan/test.py",line2,in<module>exec("a = 7 *")File"<string>",line1a=7*^SyntaxError:invalidsyntax

The expected"Note" is missing.

Since neither PEP 678 nor the documentation mention thatSyntaxError is not fully compatible with notes, I assume that this is probably a bug.

CPython versions tested on:

3.11, 3.12

Operating systems tested on:

Linux

Linked PRs

• gh-109179: Fix traceback display for SyntaxErrors with notes #109197
• [3.12] gh-109179: Fix traceback display for SyntaxErrors with notes (#109197) #109280
• [3.11] gh-109179: Fix traceback display for SyntaxErrors with notes (#109197) #109283