On Fri, 2009-04-10 at 11:52 +0000, Antoine Pitrou wrote: > Robert Collins <robert.collins <at> canonical.com> writes: > > > > (errors.py is 3027 lines long with 347 exception classes). > > 347 exception classes? Perhaps your framework is over-engineered. > > Similarly, when using a heavy Web framework, reloading a Web app can take > several seconds... but I won't blame Python for that.
Well, we've added exceptions as we needed them. This isn't much different to errno in C programs; the errno range has expanded as people have wanted to signal that specific situations have arisen. The key thing for us is to have both something that can be caught (for library users of bzrlib) and something that can be formatted with variable substitution (for displaying to users). If there are better ways to approach this in python than what we've done, that would be great. -Rob
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