title: How are array typehints declared in Python?
body: <p>Given this function:</p>
  
  <pre><code>def array_returner():
      return ["hello", "there"]
  </code></pre>
  
  <p>How would I typehint that this function returns an array of strings, without importing List (and using the <code>List[str]</code> syntax)?</p>