Fix unsloth-zoo ascii encoding issue #332
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bradhilton
approved these changes
Aug 12, 2025
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Python throws this error when you run a training script using
uv run file.py.UnicodeDecodeError: 'ascii' codec can't decode byte 0xf0 in position 31733: ordinal not in range(128)But if you run it from a notebook, it works fine.
The problem is that Python’s default text encoding is determined by OS locale, and in many cases, it assumes ASCII.
Jupyter kernel, on the other hand, runs in UTF-8.
ASCII encoding doesn’t seem to work with unsloth-zoo. There is an open PR, but it has not been merged yet.
We can temporarily enforce UTF-8 encoding until unsloth fixes the issue.