title: Python pipelines duplicate checker, using "raise DropItem" but how do we make it pipe down?
body: <p>raise DropItem below is creating too much noise and outputting complete objects</p>
  <p><strong>Question</strong>: How can we make it output just the string? Or is there another Way to drop items in pipelines?</p>
  <p>the result is now a whole object with all its values and cluttering the output. The wish would be to drop 1 item silently ... we used delete() before but this resulted in errors in later pipelines. Help appreciated</p>
  <pre><code>    # Duplicate checker based on https://scrapy2.readthedocs.io/en/latest/topics/item-pipeline.html
      if item['sku'] in self.skus_seen:
          if &quot;url&quot; not in item or not item['url']:
              item['url'] = '???, plz store item url in spider'
          raise DropItem(f&quot;Duplicate products {item['sku']} at {item['url']}&quot;)
  </code></pre>