add an asynchronous exception class

[Robert Kern]

Paul Rubin wrote:
> "Fredrik Lundh" <fredrik at pythonware.com> writes:
> 
>>PEP 348 addresses this by moving special exceptions out of the
>>Exception hierarchy:
>>
>>    http://www.python.org/peps/pep-0348.html
> 
> I see that suggestion was rejected (it needed changing the semantics
> of "except:").  Also, PEP 348 was rejected and is a huge, complex
> reorganization of the whole exception system. 

The relevant part of PEP 348 survived as PEP 352.

  http://www.python.org/peps/pep-0352.html

-- 
Robert Kern
robert.kern at gmail.com

"In the fields of hell where the grass grows high
 Are the graves of dreams allowed to die."
  -- Richard Harter