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Description
Bug Report
Plugin code cannot extend any of the Visitor classes
To Reproduce
frommypy.nodesimportIndexExpr,MypyFilefrommypy.pluginimportPluginfrommypy.traverserimportTraverserVisitordefplugin(_:str)->type[Plugin]:returnReproducerPluginclassReproducerPlugin(Plugin):defget_additional_deps(self,file:MypyFile)->list[tuple[int,str,int]]:classIndexVisitor(TraverserVisitor):defvisit_index_expr(self,ie:IndexExpr,/)->None:print(ie)file.accept(IndexVisitor())
Expected Behavior
It not crash
Actual Behavior
[ERROR ] An un-handled exception was caught by Salt's global exception handler:TypeError: interpreted classes cannot inherit from compiled traitsTraceback (most recent call last): File "venv/bin/mypy", line 8, in <module> sys.exit(console_entry()) ~~~~~~~~~~~~~^^ File "venv/lib/python3.13/site-packages/mypy/__main__.py", line 15, in console_entry main() ~~~~^^ File "mypy/main.py", line 127, in main File "mypy/main.py", line 211, in run_build File "mypy/build.py", line 191, in build File "mypy/build.py", line 267, in _build File "mypy/build.py", line 2886, in dispatch File "mypy/build.py", line 3072, in load_graph File "mypy/build.py", line 1994, in __init__ File "mypy/build.py", line 2292, in compute_dependencies File "mypy/plugin.py", line 845, in get_additional_deps File "plugin/__init__.py", line 16, in get_additional_deps file.accept(IndexVisitor()) ~~~~~~~~~~~~^^TypeError: interpreted classes cannot inherit from compiled traits
Your Environment
LOG: Mypy Version: 1.17.0LOG: Config File: pyproject.tomlLOG: Configured Executable: venv/bin/python3.13LOG: Current Executable: venv/bin/python3.13LOG: Cache Dir: .mypy_cacheLOG: Compiled: TrueLOG: Exclude: []LOG: Found source: BuildSource(path='test.py', module='test', has_text=False, base_dir='.', followed=False)LOG: Metadata abandoned for test: options differLOG: Metadata not found for testLOG: Parsing test.py (test)LOG: Build finished in 0.013 seconds with 1 modules, and 0 errors
frompyproject.toml
:
[tool.mypy]plugins = ["pydantic.mypy", "plugin"]strict = truenamespace_packages = truemypy_path = ".mypy-stubs/"scripts_are_modules = true
- Python version used: 3.13