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| author | Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com> | 2021-01-02 16:19:15 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-01-02 16:19:15 (GMT) |
| commit | 49cd68fb1ed4cbaf109308c0a7c8c1efcf6f3775 (patch) | |
| tree | 4a32be22ada611677a3d9f86b5c1e1215aac3dcd /Misc/NEWS.d/next/Core and Builtins | |
| parent | d9142831ba6780eef47bb68e878cf2f8910c4ab2 (diff) | |
| download | cpython-49cd68fb1ed4cbaf109308c0a7c8c1efcf6f3775.zip cpython-49cd68fb1ed4cbaf109308c0a7c8c1efcf6f3775.tar.gz cpython-49cd68fb1ed4cbaf109308c0a7c8c1efcf6f3775.tar.bz2 | |
bpo-42195: Disallow isinstance/issubclass for subclasses of genericaliases in Union (GH-24059)
Previously this didn't raise an error. Now it will:
```python
from collections.abc import Callable
isinstance(int, list | Callable[..., str])
```
Also added tests in Union since there were previously none for stuff like ``isinstance(list, list | list[int])`` either.
Backport to 3.9 not required.
Automerge-Triggered-By: GH:gvanrossum
Diffstat (limited to 'Misc/NEWS.d/next/Core and Builtins')
0 files changed, 0 insertions, 0 deletions