old_contents: """
  Serve this site locally.
  """
  
  import sys
  import SimpleHTTPServer
  import SocketServer
  
  
  class MyTCPServer(SocketServer.TCPServer):
      """
      Release the socket when killed.
      """
      allow_reuse_address = True
  
  
  def local(arguments):
      """
      Runs the site in a local server on port 8000 or specified port.
  
      Usage: widely local [-p <PORT> | --port <PORT>]
      """
      host = '0.0.0.0'
      port = arguments['<PORT>']
      if port:
          try:
              port = int(port)
          except ValueError:
              print('<PORT> must be an integer.')
              sys.exit(1)
      else:
          port = 8000
          
      Handler = SimpleHTTPServer.SimpleHTTPRequestHandler
      httpd = MyTCPServer((host, port), Handler)
      url = 'http://' + host + ':' + str(port)
      print("serving at " + url)
      import webbrowser
  
      webbrowser.open_new_tab(url)
      httpd.serve_forever()
  
new_contents: """
  Serve this site locally.
  """
  
  import sys
  import SimpleHTTPServer
  import SocketServer
  
  
  class MyTCPServer(SocketServer.TCPServer):
      """
      Release the socket when killed.
      """
      allow_reuse_address = True
  
  
  def local(arguments):
      """
      Runs the site in a local server on port 8000 or specified port.
  
      Usage: widely local [-p <PORT> | --port <PORT>]
      """
      host = '0.0.0.0'
      port = arguments['<PORT>']
      if port:
          try:
              port = int(port)
          except ValueError:
              print('<PORT> must be an integer.')
              sys.exit(1)
      else:
          port = 8000
  
      Handler = SimpleHTTPServer.SimpleHTTPRequestHandler
      httpd = MyTCPServer((host, port), Handler)
      url = 'http://' + host + ':' + str(port)
      print("serving at " + url)
      import webbrowser
  
      webbrowser.open_new_tab(url)
      httpd.serve_forever()
  
subject: remove unnecessary whitespace