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[devalue] better error message for self-referencing custom types

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Authored by: bashonly
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bashonly 2025-06-11 12:49:08 -05:00
parent 8578e78719
commit 39cb150d76
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yt_dlp/utils/web/devalue.py
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@ -79,7 +79,7 @@ def parse_iter(parsed: typing.Any, /, *, revivers: dict[str, collections.abc.Cal
# TODO: implement zips `strict=True` # TODO: implement zips `strict=True`
if reviver := revivers.get(value[0]): if reviver := revivers.get(value[0]):
if value[1] == source: if value[1] == source:
yield IndexError('custom types cannot point to themselves') yield IndexError(f'{value[0]!r} cannot point to itself (index: {source})')
continue continue
# inverse order: resolve index, revive value # inverse order: resolve index, revive value
stack.append((target, index, (value[0], value[1], reviver))) stack.append((target, index, (value[0], value[1], reviver)))