old_contents: # -*- coding: utf-8 -*-
  #
  # The main application file
  #
  
  from webapp2 import WSGIApplication
  from helpers.config import load_config
  
  # Explicitly import controller classes
  from controllers import root
  
  
  __author__  = "YOUR NAME"
  __website__ = "http://example.com"
  __email__   = "you@example.com"
  __licence__ = "MIT"
  __version__ = "0.1"
  
  
  # Map route patterns to controller handlers
  routes = [
      ('/', root.HomeRoute)
  ]
  
  
  # Load config and set debug flag
  debug, config = load_config()
  
  
  # Create the application
  app = WSGIApplication(routes=routes, debug=debug, config=config)
  
  
  # Define error page handlers for production only
  # We want to see full error traces during development
  if not debug:
      app.error_handlers[404] = root.error_404
      app.error_handlers[500] = root.error_500
new_contents: # -*- coding: utf-8 -*-
  #
  # The main application file
  #
  
  # Add 3rd-party library folder in to system path
  import sys
  sys.path.insert(0, 'lib')
  
  from webapp2 import WSGIApplication
  from helpers.config import load_config
  
  # Explicitly import controller classes
  from controllers import root
  
  
  __author__  = "YOUR NAME"
  __website__ = "http://example.com"
  __email__   = "you@example.com"
  __licence__ = "MIT"
  __version__ = "0.1"
  
  
  # Map route patterns to controller handlers
  routes = [
      ('/', root.HomeRoute)
  ]
  
  
  # Load config and set debug flag
  debug, config = load_config()
  
  
  # Create the application
  app = WSGIApplication(routes=routes, debug=debug, config=config)
  
  
  # Define error page handlers for production only
  # We want to see full error traces during development
  if not debug:
      app.error_handlers[404] = root.error_404
      app.error_handlers[500] = root.error_500
subject: Add 3rd-party library folder in to system path