Bug report
Bug description:
The exception string in encondings.idna.IncrementalDecoder is missing the 'f' prefix.
| raise UnicodeError("Unsupported error handling: {errors}") |
The exception can be triggered with this snippet.
from encodings.idna import IncrementalDecoder decoder = IncrementalDecoder(errors='boom!') decoder.decode(b'')
On main
$ ./python test.py Traceback (most recent call last): File "/home/hollas/software/cpython/test.py", line 3, in <module> decoder.decode(b'') ~~~~~~~~~~~~~~^^^^^ File "<frozen codecs>", line 325, in decode File "/home/hollas/software/cpython/Lib/encodings/idna.py", line 319, in _buffer_decode raise UnicodeError("Unsupported error handling: {errors}") UnicodeError: Unsupported error handling: {errors}
The issue also exists on Python 3.13 and 3.14, but not on 3.12
$ uvx python@3.12 test.py Traceback (most recent call last): File "/home/hollas/software/cpython/test.py", line 3, in <module> decoder.decode(b'') File "<frozen codecs>", line 322, in decode File "/usr/lib64/python3.12/encodings/idna.py", line 264, in _buffer_decode raise UnicodeError("Unsupported error handling "+errors) UnicodeError: Unsupported error handling boom!
(I'll submit a PR shortly)
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response