title: Does jinja2 have filter help show only part of variable in browser
body: <p>If I use </p>
  
  <pre><code>{{ post.body_html | safe }}
  </code></pre>
  
  <p>program will select data from MySQL and display on browser as complete article.
  So does jinja2 have filter help  show part of variable like article's first paragraph.</p>