[Cython] Accessing C attributes from Python functions in the interpreter

[Stefan Behnel]

Hi,

Johannes Wienke wrote:
> My data is set by an external library that I
> have opened before. I've also double-checked that it is set. But somehow
> in another self than the one used when calling the data.

I see two possibilities:

a) It's not the same object. Try to make sure that you don't re-create it
somewhere else. (e.g. put a __cinit__ method in there and print "I'm alive!")

b) You call the method from C code or otherwise by hand and pass the wrong
instance as self. Print the type of the object that self points to when the
method is called.

Stefan