[Cython] Raising exceptions under python 2.5

[Johannes Wienke]

Hi again,

I've developed my project under python 2.4 and now I got to get it
running under 2.5. The main problem I notice at the moment with the
cython party is raising exceptions. Running the project I get constant
errors of the form:

Traceback (most recent call last):
  File "/tmp/shIP/test/shiptests/datatest.py", line 49, in testStartData
    self.__dataStore.addDataObserver(DataStore.START_IDENT, plugin1)
  File "data.pyx", line 535, in ship.data.DataStore.addDataObserver
(build/temp.linux-i686-2.5/pyrex/data.c:4314)
  File "data.pyx", line 472, in ship.data.DataStore.__addToObserverDict
(build/temp.linux-i686-2.5/pyrex/data.c:3908)
  File "data.pyx", line 558, in ship.data.DataStore.__findObserverItem
(build/temp.linux-i686-2.5/pyrex/data.c:4478)
TypeError: raise: exception must be an old-style class or instance

The line contains:
raise KeyError("No _ObserverItem found belonging to '%s'." % observer)

I thought this is the preferred way of raising exceptions. Why is cython
/ python complaining about this?

Thanks for the help
Johannes

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