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I am trying to access a C++ function from python by using SWIG for wrapping. The function uses two arrays as inputs of length cL and another as output of some smaller length. The SWIG .i file is :

%module polcvx
%include "typemaps.i"
%apply int *INPUT {int *cL};
%typemap(in) float r[cL] (float temp[cL]) {
  int i;
  if (!PySequence_Check($input)) {
PyErr_SetString(PyExc_ValueError, "Expected a sequence");
SWIG_fail;
  }
  if (PySequence_Length($input) != cL) {
   PyErr_SetString(PyExc_ValueError, "Size mismatch. Expected more or less elements than 4th argument");
   SWIG_fail;
  }
  for (i = 0; i < cL; i++) {
   PyObject *o = PySequence_GetItem($input, i);
  }
  $1 = temp;
  }
%typemap(in) float t[cL] (float temp1[cL]) {
  int i;
  if (!PySequence_Check($input)) {
    PyErr_SetString(PyExc_ValueError, "Expected a sequence");
    SWIG_fail;
  }
  if (PySequence_Length($input) != cL) {
    PyErr_SetString(PyExc_ValueError, "Size mismatch. Expected more or less elements than 4th argument");
    SWIG_fail;
  }
  for (i = 0; i < cL; i++) {
    PyObject *o = PySequence_GetItem($input, i);
  }
  $2  = temp1;
 }
  %typemap(in, numinputs=0) int *hull[ANY] (int temp2[ANY]) {
  $3 = &temp2;
 }
 %typemap(argout) int *hull[ANY] {
  int i;
   $result = PyList_New($3_dim0);
  for (i = 0; i < $3_dim0; i++) {
    PyObject *o = PyFloat_FromDouble((double) $3[i]);
    PyList_SetItem($result, i, o);
   }
}
%{
#define SWIG_FILE_WITH_INIT
#include "cvxp.hpp"
 %}
 int cvx( int hull[],float r[], float t[], int cL);

and implemented in python as

import _polcvx
rad=[10,5,2,20,15,7,10,45,12]
theta=[0.5236   , 0.7854 ,   1.5708  ,  2.6180 ,   2.9671   , 3.3161  ,  4.0143   , 4.7124  ,  6.1087]
l=len(rad)
ls=[]
i=_polcvx.cvx(5,rad2,theta,l)

I am getting an error in python 

Traceback (most recent call last):
  File "E:\Hull\cpp and py conversion\CvxPolar.py", line 65, in <module>
    i=_polcvx.cvx(ls,rad2,theta,l)
TypeError: in method 'cvx', argument 1 of type 'int []'

Since the function uses pointer to access array variable, cant figure out the correct configuration to be done in .i file.

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