old_contents: # -*- coding: utf-8 -*-
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  import logging
  from paramiko import SFTP_NO_SUCH_FILE
  from airflow.contrib.hooks.sftp_hook import SFTPHook
  from airflow.operators.sensors import BaseSensorOperator
  from airflow.utils.decorators import apply_defaults
  
  
  class SFTPSensor(BaseSensorOperator):
      """
      Waits for a file or directory to be present on SFTP.
      :param path: Remote file or directory path
      :type path: str
      :param sftp_conn_id: The connection to run the sensor against
      :type sftp_conn_id: str
      """
      template_fields = ('path',)
  
      @apply_defaults
      def __init__(self, path, sftp_conn_id='sftp_default', *args, **kwargs):
          super(SFTPSensor, self).__init__(*args, **kwargs)
          self.path = path
          self.hook = SFTPHook(sftp_conn_id=sftp_conn_id)
  
      def poke(self, context):
          logging.info('Poking for %s', self.path)
          try:
              self.hook.get_mod_time(self.path)
          except IOError as e:
              if e.errno != SFTP_NO_SUCH_FILE:
                  raise e
              return False
          self.hook.close_conn()
          return True
  
new_contents: # -*- coding: utf-8 -*-
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  import logging
  from paramiko import SFTP_NO_SUCH_FILE
  from airflow.contrib.hooks.sftp_hook import SFTPHook
  from airflow.operators.sensors import BaseSensorOperator
  from airflow.utils.decorators import apply_defaults
  
  
  class SFTPSensor(BaseSensorOperator):
      """
      Waits for a file or directory to be present on SFTP.
      :param path: Remote file or directory path
      :type path: str
      :param sftp_conn_id: The connection to run the sensor against
      :type sftp_conn_id: str
      """
      template_fields = ('path',)
  
      @apply_defaults
      def __init__(self, path, sftp_conn_id='sftp_default', *args, **kwargs):
          super(SFTPSensor, self).__init__(*args, **kwargs)
          self.path = path
          self.hook = SFTPHook(sftp_conn_id)
  
      def poke(self, context):
          logging.info('Poking for %s', self.path)
          try:
              self.hook.get_mod_time(self.path)
          except IOError as e:
              if e.errno != SFTP_NO_SUCH_FILE:
                  raise e
              return False
          self.hook.close_conn()
          return True
  
subject: Fix Unexpected argument in SFTP Sensor