``` fishfor i in python3.{9,10,11,12,13,14}    echo -n "$i "    $i -c 'import pathlib; print(repr(pathlib.PurePosixPath))'end``````python3.9 <class 'pathlib.PurePosixPath'>python3.10 <class 'pathlib.PurePosixPath'>python3.11 <class 'pathlib.PurePosixPath'>python3.12 <class 'pathlib.PurePosixPath'>python3.13 <class 'pathlib._local.PurePosixPath'>python3.14 <class 'pathlib.PurePosixPath'>```

As ofpython/cpython#121395, the format of thelist.index exception has changed and parsing it like this no longerworks. Relying on implementation details like this is always risky, sothis solution should be more future-proof.