如何将C ++指针传递给其他cython对象

Question

I still am having a very hard time figuring this out. Take this simple scenario.. in a file named PyFoo.pyx

cdef extern from "Foo.h" namespace "Foo":  
    cdef cppclass C_FOO:
        ...........

cdef class PythonFoo:
    C_FOO* pythonFoo
    def __cinit__(self):
        self.pythonFoo=new CFOO()

I do have a PyFoo.PXD also, that simply does this for a forward decl so other classes can see it

cdef class PythonFoo:
    C_FOO * pythonFoo

Now I have another class (in PyBar.pyx) that needs PythonFoo.pythonFoo as a member

cdef extern from "Bar.h" namespace "Bar":  
    cdef cppclass C_Bar:
         ThisFunctionNeeds(C_FOO*)
cimport PythonFoo        
cdef class PythonBar:
    C_Bar* pythonBar
    def __cinit__(self):
        self.pythonBar=new C_Bar()
    def SomeFunction(self,PythonFoo):
        ThisFunctionNeeds(PythonFoo.pythonFoo)   

No matter how I try to cimport it, I get "PythonFoo not defined" (Because there is no init in the pxd file I guess) or I have to manually include the Foo.pyx, making this now a member of Bar.

Can someone please show me (with an example please) how this is supposed to work?

Thank you.

EDIT: PythonFoo and PythonBar are in separate modules in the package.

In a Python Tester, I try to use this

import PythonFoo
import PythonBar

foo=PythonFoo()
bar=PythonBar()
bar.SomeFunction(foo)

Here is where I get the "No module named 'PyFoo'

Answer 1

I was able to find why it would not work... The actual directory of the module was not placed, as a matter of fact, the file was placed at a higher directory from the build directory.

I fixed it with a simple

sys.path.append('package_directory')

EDIT: I also found out why this was... I had an __init__.py in the same directory as my setup.py file, so the compiler thought that directory was part of the package. I deleted the __init__.py , and I no longer needed to append the directory.