client.py

from requests import get,post
from json import loads

PORT = "5000"
HOST = "localhost"

get_request_content = get('http://'+HOST+':'+PORT+'/hello').content
print "response data: ", loads(get_request_content)['content']

post_request_content = post('http://'+HOST+':'+PORT+'/incr', data={"num":548}).content
print "response data: ", loads(post_request_content)['content']

server.js

var express = require('express');
var bodyParser = require('body-parser');

var app = express();

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
      extended: true
}));

app.get('/hello', function (req, res) {
  res.json({'content':'Hello World!'});
});

app.post('/incr', function (req, res) {
  res.json({'content':parseInt(req.body.num)+1});
});

app.listen(5000, function () {
  console.log('Application is Running');
});