title: Extract different values from list of tuples
body: <p>How to extract a list of different values from following list of tuples?</p>
  
  <pre><code>tuple = ((("test", 123), ("test", 465), ("test", 8910), ("test2", 123)))
  </code></pre>
  
  <p>I want to get a list like:</p>
  
  <pre><code>different_values = ("test", "test2")
  </code></pre>
  
  <p>Now I want to access all values by this "keys" and get them by a list:</p>
  
  <pre><code>test_values = (123, 456, 8910)
  test2_values = (123)
  </code></pre>
  
  <p>How to do that?</p>