title: Python to influxdb - insert if no record
body: <p>I know influx is for measurement type data.  But I'm also using it for annotations on certain events.</p>
  
  <p>I have scripts that run every minute, that it would be difficult for it to realise an event has already happened.  Is there something I can do on the insert to only insert if a new record rather than every time. </p>