failed C extension compilation for python

I am new to creating C extension modules for python

I am taking help from the book "programming python" by Mark Lutz

I have written a code to create an extention module for python using this book but I get a error while I run the setup

The code is

#include<Python.h>
#include<string.h>


//MODULE FUNCTIONS..........................................................

static PyObject* message(PyObject *self, PyObject *args)
{
    char *fromPython, result[1024];
    if(!PyArg_ParseTuple(args, "s", &fromPython))
    {
        return NULL;
    }
    else
    {
        strcpy(result, "Hello, ");
        strcat(result, fromPython);
        return Py_BuildValue("s", result);
    }
}

//___________________________________________________________________________



//METHOD REGISTRATION TABLE..................................................

static PyMethodDef hello_methods[]={
//   name        &func      fmt           doc 
    {"message", message, METH_VARARGS, "print a message"},
    {NULL, NULL, 0, NULL}
};

//___________________________________________________________________________


//MODULE DEFINITION STRUCTURE................................................

static struct PyModuleDef hellomodule={
    PyModuleDef_HEAD_INIT,
    "hello"//name of module
    "print messages"//module doc
    -1//size of pre interpreter module state, -1=in global vars
    hello_methods//link to methods table
};

//___________________________________________________________________________




//MODULE INITIALIZER---------------------------------------------------------

PyMODINIT_FUNC PyInit_hello()
{
    PyModule_Create(&hellomodule);
}
//___________________________________________________________________________

The code for setup.py is

from distutils.core import setup, Extension

module1=Extension('hello', include_dirs=['/usr/local/include'], libraries=['pthread'], sources=['hello.c'])

setup(name='hello', version='1.0', description='debesh', url='http://www.debeshmohanty.com', ext_modules=[module1])

The error message I get when I use the command 'python setup.py build' is

running build
running build_ext
building 'hello' extension
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/local/include -I/usr/include/python2.7 -c hello.c -o build/temp.linux-x86_64-2.7/hello.o
hello.c:40:15: error: variable ‘hellomodule’ has initializer but incomplete type
 static struct PyModuleDef hellomodule={
               ^
hello.c:41:2: error: ‘PyModuleDef_HEAD_INIT’ undeclared here (not in a function)
  PyModuleDef_HEAD_INIT,
  ^
hello.c:41:2: warning: excess elements in struct initializer
hello.c:41:2: warning: (near initialization for ‘hellomodule’)
hello.c:45:2: warning: excess elements in struct initializer
  hello_methods//link to methods table
  ^
hello.c:45:2: warning: (near initialization for ‘hellomodule’)
hello.c:45:2: error: expected ‘}’ before ‘hello_methods’
hello.c:55:16: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
 PyMODINIT_FUNC PyInit_hello()
            ^
hello.c: In function ‘PyInit_hello’:
hello.c:57:2: warning: implicit declaration of function ‘PyModule_Create’ [-Wimplicit-function-declaration]
  PyModule_Create(&hellomodule);
  ^
hello.c: At top level:
hello.c:28:20: warning: ‘hello_methods’ defined but not used [-Wunused-variable]
 static PyMethodDef hello_methods[]={
                ^
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1