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* vm: use non-raising lookup for default attribute access get_attribute_opt() backs hasattr() and getattr() with a default. It used get_attr_inner() for every object, then converted AttributeError from a missing attribute into None. The usual user-object miss therefore built and dropped an exception just to answer an optional lookup. Route objects using PyBaseObject::getattro through generic_getattr_opt(), which returns the missing case without constructing AttributeError. Objects with a custom getattro slot keep the raising path: their __getattribute__ and __getattr__ hooks can run Python code, so their exceptions must preserve the existing behavior. AttributeError from either route, including a descriptor, is still converted to None; non-AttributeError exceptions propagate. The new snippet covers ordinary hits and misses, custom __getattribute__ / __getattr__, descriptor exceptions, and dynamic getattro-slot updates. Refs youknowone#48 Assisted-by: Codex:GPT-5.6-terra * vm: use non-raising lookup for optional attributes
Test snippets
This directory contains two sets of test snippets which can be run in Python.
The snippets/ directory contains functional tests, and the benchmarks/
directory contains snippets for use in benchmarking RustPython's performance.
Setup
Our testing depends on pytest, which you can install using pip.
Running
Simply run pytest -v in this directory, and the tests should run (and hopefully
pass). If it hangs for a long time, that's because it's building RustPython in
release mode, which should take less time than it would to run every test
snippet with RustPython compiled in debug mode.