old_contents: # 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.
  
  from .request import Request
  from .response import Response
  from .layer import Layer
  from . import exceptions
  
  import requests
  
  class Driver(Layer):
  
      def call(self, operation, **params):
          request = Request()
          self.before_call(request, operation, **params)
  
          print request.uri
          print request.body
          print request.headers
  
          try:
              resp = requests.request(
                  request.method,
                  request.uri,
                  data=request.body,
                  headers=request.headers,
              )
  
              response = Response()
              response.status_code = resp.status_code
              response.body = resp.content
  
              return self.after_call(operation, request, response)
          except requests.ConnectionError as e:
              raise exceptions.ClientError(
                  message=str(e),
                  code='ConnectionError',
              )
  
new_contents: # 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.
  
  from .request import Request
  from .response import Response
  from .layer import Layer
  from . import exceptions
  
  import requests
  
  
  class Driver(Layer):
  
      def call(self, operation, **params):
          request = Request()
          self.before_call(request, operation, **params)
  
          print request.uri
          print request.body
          print request.headers
  
          try:
              resp = requests.request(
                  request.method,
                  request.uri,
                  data=request.body,
                  headers=request.headers,
              )
  
              response = Response()
              response.status_code = resp.status_code
              response.body = resp.content
  
              return self.after_call(operation, request, response)
          except requests.ConnectionError as e:
              raise exceptions.ClientError(
                  message=str(e),
                  code='ConnectionError',
              )
  
subject: Fix flake8