old_contents: import os
  from terminado import NamedTermManager
  from .handlers import TerminalHandler, NewTerminalHandler, TermSocket
  from . import api_handlers
  
  def initialize(webapp):
      shell = os.environ.get('SHELL', 'sh')
      webapp.terminal_manager = NamedTermManager(shell_command=[shell])
      handlers = [
          (r"/terminals/new", NewTerminalHandler),
          (r"/terminals/(\w+)", TerminalHandler),
          (r"/terminals/websocket/(\w+)", TermSocket,
               {'term_manager': webapp.terminal_manager}),
          (r"/api/terminals", api_handlers.TerminalRootHandler),
          (r"/api/terminals/(\w+)", api_handlers.TerminalHandler),
      ]
      webapp.add_handlers(".*$", handlers)
new_contents: import os
  from terminado import NamedTermManager
  from IPython.html.utils import url_path_join as ujoin
  from .handlers import TerminalHandler, NewTerminalHandler, TermSocket
  from . import api_handlers
  
  def initialize(webapp):
      shell = os.environ.get('SHELL', 'sh')
      webapp.terminal_manager = NamedTermManager(shell_command=[shell])
      base_url = webapp.settings['base_url']
      handlers = [
          (ujoin(base_url, "/terminals/new"), NewTerminalHandler),
          (ujoin(base_url, r"/terminals/(\w+)"), TerminalHandler),
          (ujoin(base_url, r"/terminals/websocket/(\w+)"), TermSocket,
               {'term_manager': webapp.terminal_manager}),
          (ujoin(base_url, r"/api/terminals"), api_handlers.TerminalRootHandler),
          (ujoin(base_url, r"/api/terminals/(\w+)"), api_handlers.TerminalHandler),
      ]
      webapp.add_handlers(".*$", handlers)
subject: Put terminal handlers under base_url