[issue2651] Strings passed to KeyError do not round trip

[Anthony Sottile]

Anthony Sottile <asottile at umich.edu> added the comment:

(I know this is old and closed but I've just run into the same thing with pwd.getpwnam in issue41767)


KeyError: "getpwnam(): name not found: 'test'"


would it be possible / make sense to extend `KeyError` with a named-only-argument which would preserve the raw string in this case?

something like (yeah the name is probably not great, I haven't had time to think much about this)

raise KeyError("getpwnam(): name not found 'test'", preserve_msg=True)

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nosy: +Anthony Sottile

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