gh-111922: Allow Using a Minimal Proxy for TracebackException.exc_type#112324
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ericsnowcurrently wants to merge 7 commits intopython:mainfrom
Closed
gh-111922: Allow Using a Minimal Proxy for TracebackException.exc_type#112324ericsnowcurrently wants to merge 7 commits intopython:mainfrom
ericsnowcurrently wants to merge 7 commits intopython:mainfrom
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iritkatriel
reviewed
Nov 22, 2023
| self.addCleanup(sys.path.pop) | ||
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| if not mod_name: | ||
| mod_name = ''.join(random.choices(string.ascii_letters, k=16)) |
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Maybe assert that mod_name is not in sys.modules before we add it?
Lib/test/test_traceback.py
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| def __repr__(self) -> str: | ||
| raise Exception("Unrepresentable") | ||
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iritkatriel
reviewed
Nov 22, 2023
Lib/traceback.py
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| raise ValueError(f'unsupported exc_type {exc_type!r}') | ||
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| def _match_class(exc_type, *expected): |
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nit: I'd pass expected as a tuple (single arg), same way that types are passed to isinstance, etc.
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I'm closing this in favor of gh-112333. |
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Passing a proxy for exc_type is helpful when the
TracebackExceptionis going to be serialized (e.g. pickle) and you don't want to serialize user-defined types.(That's the concrete motivation for me. For the
_xxsubinterpretersmodule I'm propagating exceptions via a pickledTracebackExceptionand don't want to deal with unpickling a user-defined exception class in a different interpreter.)Note that most of this PR is tests, including a bunch of coverage of existing behavior.