title: unable to start instance using python in aws using boto
body: <pre><code>import boto.ec2
  conn = boto.ec2.connect_to_region("us-west-2",
  ...    aws_access_key_id='&lt;aws access key&gt;',
  ...    aws_secret_access_key='&lt;aws secret key&gt;')
  </code></pre>
  
  <p>Did this substituting values , when i run  </p>
  
  <pre><code>  conn.run_instances('&lt;ami-image-id&gt;')
  </code></pre>
  
  <p>It gives an error stating</p>
  
  <p>'NoneType' object has no attribute 'run_instances'</p>