Author cvrebert
Recipients Arfrever, Hobson.Lane, Roman.Evstifeev, benjamin.peterson, cvrebert, eric.araujo, ganadist, giampaolo.rodola, pitrou, r.david.murray, rosslagerwall, smarnach, vstinner
Date 2012-04-23.17:53:02
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Message-id <1335203582.89.0.830071281989.issue3177@psf.upfronthosting.co.za>
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>> ENOSYS was the closest approximation I could find. Thoughts? Custom
>> error class? Different errno? Something else?
>
> Why not ValueError?

Because the value they provided was perfectly valid (the file/directory *did* exist), so the caller's request was reasonable. It's the system(/ its (lack of) configuration) that failed the caller in finding an opener application. The "fix" after encountering the exception is to add an association to the system configuration (and/or install a new application), not to pass a different path to the function.

IMO, it feels like an EnvironmentError or RuntimeError of some sort; hence the current use of OSError.
(Or NotImplementedError, but we're already using that exception to indicate a different failure condition, so that's out.)
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Date User Action Args
2012-04-23 17:53:03cvrebertsetrecipients: + cvrebert, pitrou, vstinner, giampaolo.rodola, benjamin.peterson, eric.araujo, ganadist, Arfrever, r.david.murray, rosslagerwall, smarnach, Roman.Evstifeev, Hobson.Lane
2012-04-23 17:53:02cvrebertsetmessageid: <1335203582.89.0.830071281989.issue3177@psf.upfronthosting.co.za>
2012-04-23 17:53:02cvrebertlinkissue3177 messages
2012-04-23 17:53:02cvrebertcreate