title: How to convert HH:MM:SS to time.time() object in Python
body: <p>I need to convert <code>HH:MM:SS</code> format to <code>time.time()</code> object. Is there any way to do it?</p>
  <p>Here's my <code>HH:MM:SS</code> format time:</p>
  <pre><code>a = '14:37:29'
  </code></pre>
  <p>I want to convert it to <code>time.time()</code> object such as:</p>
  <pre><code>a = 1600256249
  </code></pre>
  <p>Is this achievable? If it's not, what should I try? Hope you help.</p>