使用Cython封装一个库，该库封装另一个库

typedef struct {
  gsl_vector *vector;
  gsl_matrix *matrix;
  gsl_vector *weights;
  apop_names *names;
  ...
} apop_data;

apop_data *dataset = apop_text_to_data(\"infile.csv\"); //fill the matrix element
gsl_vector *minv = apop_matrix_inverse(dataset->matrix);
apop_data *dinv = apop_matrix_to_data(minv);
apop_data *identity_matrix = apop_dot(dataset, dinv); // I = D * D^-1
dataset->vector = gsl_vector_alloc(10);
gsl_vector_set_all(dataset->vector, 1);

\"\"\"I\'m omitting the Cython declarations of the C structs and functions,
 which are just translations of the C declarations. Let those be in c_apop.\"\"\"

cdef class apop_data:
   cdef c_apop.apop_data *d

   def set(self, row, col, val):
       c_apop.apop_data_set(self.d, row, col, val)

   def get(self, row, col):
       c_apop.apop_data_get(self.d, row, col)

   [et cetera]


cdef class gsl_vector:
   cdef c_apop.gsl_vector *v

   def set(self, row, val):
       c_apop.gsl_vector_set(self.v, row)

   def get(self, row):
       c_apop.gsl_vector_get(self.v, row)

   [et cetera]

 pyd = apop_data(10)
 v = pyd.d.vector

v

gsl_vector

v.get(0)

v.set(0, 1)

vector_get

vector_set

apop_data

gsl_vector

pyv = pyd.get_vector()

pyd.d.vector