parser: force a `ValueError` to bytes before passing to `error.ParseError` I'm not sure what changed before pytype 09-09-2021 (from 04-15-2021), but this started getting flagged. I think there's a pytype bug here, because I don't see how `.lower()` can be getting called on a `ValueError` after it is forced to a byte string. That's suppressed for now to make progress. This fixes: File "/mnt/c/Users/Matt/hg/mercurial/parser.py", line 219, in unescapestr: Function bytestr.__init__ was called with the wrong arguments [wrong-arg-types] Expected: (self, ints: Iterable[int]) Actually passed: (self, ints: ValueError) Attributes of protocol Iterable[int] are not implemented on ValueError: __iter__ File "/mnt/c/Users/Matt/hg/mercurial/parser.py", line 219, in unescapestr: No attribute 'lower' on ValueError [attribute-error] In Union[ValueError, mercurial.pycompat.bytestr] Differential Revision: https://phab.mercurial-scm.org/D11471