[Python-Dev] OSError.errno => exception hierarchy?

[Gustavo Carneiro]

Apologies if this has already been discussed.

I was expecting that by now, python 3.0, the following code:

            # clean the target dir
            import errno
            try:
                shutil.rmtree(trace_output_path)
            except OSError, ex:
                if ex.errno not in [errno.ENOENT]:
                    raise

Would have become something simpler, like this:

            # clean the target dir
            try:
                shutil.rmtree(trace_output_path)
            except OSErrorNoEntry:       # or maybe os.ErrorNoEntry
                pass

Apparently no one has bothered yet to turn OSError + errno into a hierarchy
of OSError subclasses, as it should.  What's the problem, no will to do it,
or no manpower?

Regards,

-- 
Gustavo J. A. M. Carneiro
INESC Porto, Telecommunications and Multimedia Unit
"The universe is always one step beyond logic." -- Frank Herbert
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