title: Google App Engine Datastore Migration
body: <p>I have a CSV file of this form:</p>
  
  <pre><code>Username, Password_Hash
  noam    , ************
  paz     , ************
  </code></pre>
  
  <p>I want to import this CSV into my datastore so the data could be accessed from python by using this model:</p>
  
  <pre><code>class Company(ndb.Model):
      Username = ndb.StringProperty()
      Password_Hash= ndb.StringProperty(indexed=False)
  </code></pre>
  
  <p>Of course, manual import one by one is not an option because the real file is pretty large.
  I've no idea of which structure the file used by <code>gcloud preview datastore upload is based on</code>.</p>
  
  <p>Google has a lack of good documentation on this issue.</p>