Add additional info to TypeError when C++->Python casting fails #3605
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…07/pybind11 into raise_from_return_error
henryiii
approved these changes
Jan 11, 2022
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
Adds additional information when raising a type error during function return. Inspired by the unexpected behavior from #3600 .
Suggested changelog entry:
* If possible, attach Python exception with ``py::raise_from`` to TypeError when casting from C++ to Python. This will give additional info if Python exceptions occur in the caster. Adds a test case of trying to convert a set from C++ to Python when the hash function is not defined in Python.As a meta note, this is an issue because we are a bit inconsistent in how we handle Python exceptions with
py::set,py::dict, etc...). We currently not raising an exception from Python to C++ when interacting with them, maybe we should consider doing that.