title: Is there any way to use "f-string" for a multiline string, which is stored in a variable?
body: <p>I want to send email with html template.The template is in a html file and there are some variable in this. If I read the file and store its text in a variable :</p>
  
  <pre class="lang-py prettyprint-override"><code>with open('test.html', 'r') as f:
      html = f.read()
  </code></pre>
  
  <p>Is it possible to use f-string in 'html' variable?</p>