title: Is it possible to loop over a prefect.Parameter?
body: <p>I have the following <a href="https://docs.prefect.io/core/concepts/flows.html" rel="nofollow noreferrer">flow</a>:</p>
  <pre><code>with Flow(&quot;My flow&quot;) as flow:
      urls = Parameter(&quot;urls&quot;, default=['url1', 'url2'])
      for url in urls:
          result = get_url(urls)
  </code></pre>
  <p>When I run this by <code>flow.run()</code>, I get the following error:</p>
  <pre><code>TypeError: 'Parameter' object is not iterable
  </code></pre>
  <p>Is it possible to iterate over it and if yes, how?</p>