[sage-support] How to pass the value of a Python variable to C

[chandra chowdhury]

How can I pass the value of Python variable to C? I compile
by this:

 gcc -I/usr/include/python2.7 ABC.c -lpython2.7  -lm -lutil -lpthread -ldl

#include <Python.h>
#include <stdlib.h>
#include <import.h>
#include <graminit.h>
#include <pythonrun.h>

int main()
{

 PyObject  *pValue, *c, *d;

  Py_Initialize();
  long *b;
  printf("1+1:\n");
  PyRun_SimpleString("print 1+1");


  printf("Load sage \n");
  PyRun_SimpleString("from sage.all import *");

  PyRun_SimpleString("pValue=2");
  PyRun_SimpleString("print 'g', pValue");
  PyRun_SimpleString("A=[0]*10");
  PyRun_SimpleString("for i in range(10):\n"
                     "  A[i]=i*i\n");

  PyRun_SimpleString("print 'g', A[6]");
  d = PyInt_FromLong(40);
  PyRun_SimpleString("c=pValue+1");
  PyRun_SimpleString("print 'c', c");
  d=c;

  printf("Returned val: %ld\n", PyInt_AsLong(d));
  Py_Finalize();

  return 0;
}

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