title: google.api_core.exceptions.Forbidden: 403 Missing or insufficient permissions
body: <p>Similar issues were submitted but none of the solutions work.</p>
  
  <p>When trying to do <a href="https://cloud.google.com/datastore/docs/reference/libraries" rel="noreferrer">this tutorial</a> from the Google Cloud doc, I'm getting the following error when trying to access the datastore:</p>
  
  <pre><code>google.api_core.exceptions.Forbidden: 403 Missing or insufficient 
  permissions.
  </code></pre>
  
  <p>The executed file can be found <a href="https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/datastore/cloud-client/quickstart.py" rel="noreferrer">here</a>.</p>
  
  <p>I did execute the following commands:</p>
  
  <pre><code>gcloud auth application-default login
  export GOOGLE_APPLICATION_CREDENTIALS="file.json"
  </code></pre>
  
  <p>Please note that I'm executing the file on a local computer. The goal is to perform reads/writes on the datastore directly from Google Engine app.</p>