new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  # Utility functions. 
  # Copyright (c) 2009 happychickoo.
  #
  # The MIT License
  # 
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  # 
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  # 
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  
  import configuration
  from jinja2 import Environment, FileSystemLoader
  from functools import partial
  from haggoo.template.jinja2.filters import datetimeformat
  from haggoo.template.jinja2.loaders import PythonLoader
  from urllib import urlencode
  
  # Set up the Jinja2 Environment to use the correct loader.
  # Also add a few custom filters for templates.
  template_directories = configuration.TEMPLATE_DIRS
  if configuration.DEPLOYMENT_MODE == configuration.MODE_PRODUCTION:
      template_loader = PythonLoader
  else:
      template_loader = FileSystemLoader
  
  jinja_env = Environment(loader=template_loader(template_directories))
  jinja_env.filters(['datetimeformat']) = datetimeformat
  jinja_env.filters['urlencode'] = urlencode
  
  def render_template(template_name, **context, template_builtins=configuration.TEMPLATE_BUILTINS):
      """
      Fills a template with values provided as context.
      
      The function also includes a few template builtins that are available to all 
      rendered templates.
      
      """
      template = jinja_env.get_template(template_name)
      new_context = {}
      new_context.update(template_builtins)
      new_context.update(context)
      return template.render(new_context)
  
  # Conveninence wrapper to make sure int conversion uses a decimal base. 
  dec = partial(int, base=10)
  
subject: Add a utility module