Raising a specific OSError

[Kelvie Wong]

I do not see the point in doing so (why not just copy+paste that
string?), but the errno (specifically ENOENT) corresponds to the
POSIX.1 error number, and the string "No such file or directory" is
done in C via strerror(ENOENT); (check errno(3) and strerror(3)).

I doubt there is something that does this in the standard library
(just checked, there's an errno module, but it is quite sparse), but a
simple C extension would be trivial to write.

However, the best way is just to copy and paste that text into your
program, I mean, why not?

raise OSError("[Errno 2] No such file or directory")

On 4/21/06, David Hirschfield <davidh at ilm.com> wrote:
>  I wasn't clear enough in my original post.
>
>  I know how to raise a basic OSError or IOError, but what if I want to raise
> specifically an "OSError: [Errno 2] No such file or directory"?
>  Somehow it must be possible to raise the error with the correct information
> to bring up the standard message, but where do I find the right values to
> give?
>
>  Thanks,
>  -Dave
>
>
>
>  alisonken1 wrote:
>  To raise a specific error, just find the error that you want to raise,
> then give the error a text string to print: ex.
>
> raise IOError("This raises an IO error")
>
> On the stderr output, when the routine hits this line, you will get:
>
>
>
>
>
>  raise IOError("This raises an IOError")
>
>  Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
> IOError: This raises an IOError
>
>
>  Just be sure of the error that you want to raise, since some of them
> will do stuff like closing open file descriptors as well.
>
>
>
>
> --
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> mediocre nebula.
>
>
> --
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>
>


--
Kelvie