text: import json
  import subprocess
  from flask import Flask
  from flask import request
  from flask import jsonify
  from flask.ext.cors import CORS
  app = Flask(__name__)
  CORS(app)
  
  
  @app.route('/qlayout', methods=['POST'])
  def qlayout():
      obj = request.json
      json.dump(obj, open('/tmp/data.json', 'w'))
      p = subprocess.Popen(
          ['pyomo_old', '-q', '/home/wsgi/webqlayout/model.py', '--json',
           '--save-results', '/tmp/results.json',
           '--tempdir', '/tmp'],
          stdout=subprocess.PIPE,
          stderr=subprocess.PIPE,
          stdin=subprocess.PIPE)
      out, err = p.communicate()
      print out
      print err
      result = json.load(open('/tmp/results.json'))
      sol = result['Solution'][1]['Variable']
  
      def getrank(node):
          yi = sol.get('y[{0}]'.format(node['index']))
          if yi:
              return yi['Value']
          return 0
      response = jsonify({'entries': [
          {'key': node['index'], 'rank': getrank(node)}
          for node in obj['nodes']]})
      response.headers['Content-Type'] = 'application/json'
      return response
  
  
  if __name__ == '__main__':
      app.run(debug=True)
  