[Twisted-Python] If the errbacks of a canceled Deferred are called with error other than CancelledError, is this acceptable?

Itamar Turner-Trauring itamar at itamarst.org
Tue Jun 18 15:13:45 MDT 2013

On 06/18/2013 02:22 PM, Glyph wrote:
> Making an API that previously documented raising (or failing) 
> exception types A, B, and C raise (or fail with) D is not necessarily 
> a compatible change.  Making it raise (or fail with) A' (a subclass of 
> A) is, though.
The API for pop3client does *not* document the expected exceptions, so 
backwards compatibility isn't really an issue here.

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