old_contents: # flake8: noqa
  from __future__ import absolute_import, division, print_function, with_statement
  from tornado.test.util import unittest
  
  
  class ImportTest(unittest.TestCase):
      def test_import_everything(self):
          # Some of our modules are not otherwise tested.  Import them
          # all (unless they have external dependencies) here to at
          # least ensure that there are no syntax errors.
          import tornado.auth
          import tornado.autoreload
          import tornado.concurrent
          # import tornado.curl_httpclient  # depends on pycurl
          import tornado.escape
          import tornado.gen
          import tornado.http1connection
          import tornado.httpclient
          import tornado.httpserver
          import tornado.httputil
          import tornado.ioloop
          import tornado.iostream
          import tornado.locale
          import tornado.log
          import tornado.netutil
          import tornado.options
          import tornado.process
          import tornado.simple_httpclient
          import tornado.stack_context
          import tornado.tcpserver
          import tornado.template
          import tornado.testing
          import tornado.util
          import tornado.web
          import tornado.websocket
          import tornado.wsgi
  
      # for modules with dependencies, if those dependencies can be loaded,
      # load them too.
  
      def test_import_pycurl(self):
          try:
              import pycurl  # type: ignore
          except ImportError:
              pass
          else:
              import tornado.curl_httpclient
  
new_contents: # flake8: noqa
  from __future__ import absolute_import, division, print_function, with_statement
  from tornado.test.util import unittest
  
  
  class ImportTest(unittest.TestCase):
      def test_import_everything(self):
          # Some of our modules are not otherwise tested.  Import them
          # all (unless they have external dependencies) here to at
          # least ensure that there are no syntax errors.
          import tornado.auth
          import tornado.autoreload
          import tornado.concurrent
          import tornado.escape
          import tornado.gen
          import tornado.http1connection
          import tornado.httpclient
          import tornado.httpserver
          import tornado.httputil
          import tornado.ioloop
          import tornado.iostream
          import tornado.locale
          import tornado.log
          import tornado.netutil
          import tornado.options
          import tornado.process
          import tornado.simple_httpclient
          import tornado.stack_context
          import tornado.tcpserver
          import tornado.tcpclient
          import tornado.template
          import tornado.testing
          import tornado.util
          import tornado.web
          import tornado.websocket
          import tornado.wsgi
  
      # for modules with dependencies, if those dependencies can be loaded,
      # load them too.
  
      def test_import_pycurl(self):
          try:
              import pycurl  # type: ignore
          except ImportError:
              pass
          else:
              import tornado.curl_httpclient
  
subject: Update import_test.