old_contents: # Copyright 2015 Google Inc. All rights reserved.
  #
  # Licensed 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.
  
  """
  Sample application that demonstrates how to use the App Engine Blobstore API.
  
  For more information, see README.md.
  """
  
  # [START all]
  from google.appengine.api import users
  from google.appengine.ext import blobstore
  from google.appengine.ext import ndb
  from google.appengine.ext.webapp import blobstore_handlers
  import webapp2
  
  
  # This datastore model keeps track of which users uploaded which photos.
  class UserPhoto(ndb.Model):
      user = ndb.StringProperty()
      blob_key = ndb.BlobKeyProperty()
  
  
  class PhotoUploadFormHandler(webapp2.RequestHandler):
      def get(self):
          # [START upload_url]
          upload_url = blobstore.create_upload_url('/upload_photo')
          # [END upload_url]
          # [START upload_form]
          # To upload files to the blobstore, the request method must be "POST"
          # and enctype must be set to "multipart/form-data".
          self.response.out.write("""
  <html><body>
  <form action="{0}" method="POST" enctype="multipart/form-data">
    Upload File: <input type="file" name="file"><br>
    <input type="submit" name="submit" value="Submit">
  </form>
  </body></html>""".format(upload_url))
          # [END upload_form]
  
  
  # [START upload_handler]
  class PhotoUploadHandler(blobstore_handlers.BlobstoreUploadHandler):
      def post(self):
          try:
              upload = self.get_uploads()[0]
              user_photo = UserPhoto(
                  user=users.get_current_user().user_id(),
                  blob_key=upload.key())
              user_photo.put()
  
              self.redirect('/view_photo/%s' % upload.key())
  
          except:
              self.error(500)
  # [END upload_handler]
  
  
  # [START download_handler]
  class ViewPhotoHandler(blobstore_handlers.BlobstoreDownloadHandler):
      def get(self, photo_key):
          if not blobstore.get(photo_key):
              self.error(404)
          else:
              self.send_blob(photo_key)
  # [END download_handler]
  
  
  app = webapp2.WSGIApplication([
      ('/', PhotoUploadFormHandler),
      ('/upload_photo', PhotoUploadHandler),
      ('/view_photo/([^/]+)?', ViewPhotoHandler),
  ], debug=True)
  # [END all]
  
new_contents: # Copyright 2015 Google Inc. All rights reserved.
  #
  # Licensed 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.
  
  """
  Sample application that demonstrates how to use the App Engine Blobstore API.
  
  For more information, see README.md.
  """
  
  # [START all]
  from google.appengine.api import users
  from google.appengine.ext import blobstore
  from google.appengine.ext import ndb
  from google.appengine.ext.webapp import blobstore_handlers
  import webapp2
  
  
  # This datastore model keeps track of which users uploaded which photos.
  class UserPhoto(ndb.Model):
      user = ndb.StringProperty()
      blob_key = ndb.BlobKeyProperty()
  
  
  class PhotoUploadFormHandler(webapp2.RequestHandler):
      def get(self):
          # [START upload_url]
          upload_url = blobstore.create_upload_url('/upload_photo')
          # [END upload_url]
          # [START upload_form]
          # To upload files to the blobstore, the request method must be "POST"
          # and enctype must be set to "multipart/form-data".
          self.response.out.write("""
  <html><body>
  <form action="{0}" method="POST" enctype="multipart/form-data">
    Upload File: <input type="file" name="file"><br>
    <input type="submit" name="submit" value="Submit">
  </form>
  </body></html>""".format(upload_url))
          # [END upload_form]
  
  
  # [START upload_handler]
  class PhotoUploadHandler(blobstore_handlers.BlobstoreUploadHandler):
      def post(self):
          upload = self.get_uploads()[0]
          user_photo = UserPhoto(
              user=users.get_current_user().user_id(),
              blob_key=upload.key())
          user_photo.put()
  
          self.redirect('/view_photo/%s' % upload.key())
  # [END upload_handler]
  
  
  # [START download_handler]
  class ViewPhotoHandler(blobstore_handlers.BlobstoreDownloadHandler):
      def get(self, photo_key):
          if not blobstore.get(photo_key):
              self.error(404)
          else:
              self.send_blob(photo_key)
  # [END download_handler]
  
  
  app = webapp2.WSGIApplication([
      ('/', PhotoUploadFormHandler),
      ('/upload_photo', PhotoUploadHandler),
      ('/view_photo/([^/]+)?', ViewPhotoHandler),
  ], debug=True)
  # [END all]
  
subject: Fix lint error in blobstore sample