Guido van Rossum wrote: > > > The question is, whether, given > > > > class Base:pass > > class MyExc(Base, Exception):pass > > > > it would be valid to write > > > > try: > > foo() # raises MyExc > > except Base: > > pass > > The "except Base:" class would of course be illegal because Base > doesn't derive from Exception. (Although the error might only be > detected when MyExc is raised -- but PyChecker could do better.) But > the statement "raise MyExc" would be perfectly legal, and could be > caught either with "except MyExc" or "except Exception". There are several problems in the std library now: bdb.py:9 BdbQuit is a string exception macpath.py:173 norm_error is a string exception tabnanny.py:48 NannyNag does not derive from Exception xdrlib.py:12 ConversionError (Error) does not derive from Exception Shall I make all of these derive from Exception? Is there any potential problems with doing so? Neal
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