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Cython should warn if you have a property redefining a cdef attribute #2981

ionelmc opened this issue Jun 2, 2019 · 2 comments


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commented Jun 2, 2019

So it turns out if you have something like this in a pxd:

cdef class Foobar:
    object stuff

and then later on you implement this in a pyx:

cdef class Foobar:
  def stuff(self):
  def stuff(self, value):

the setter won't be called.

I know this code is silly but it would be nice if cython would give some error or warning about the bad definition.

fwiw I tested this on 0.29.9.


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commented Jun 7, 2019

Doesn't it warn if you increase the warning level?
(That said, warnings about redefinitions are … suboptimal currently, because they also warn about perfectly fine cpdef declarations. PR welcome for that.)


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commented Jun 7, 2019

Ooof .... I'm using the api to cythonize. I guess I have to do some changes.

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