title: List comprehension with dynamic value changing
body: <p>I have 2 variables. They stay in a reverse connection and form a list with 2 values which sum equals to 1. The example is shown below:</p>
  <pre><code>[0.1, 0.9], [0.2, 0.8], ..., [0.9, 0.1]
  </code></pre>
  <p>Is it possible to create a list generator that is able to do this?</p>
  <p>So I want the following list of lists as a result:</p>
  <pre><code>[[0.1, 0.9], [0.2, 0.8], ..., [0.9, 0.1]]
  </code></pre>
  <p>I know, I can use a <code>for</code> loop for it, however, I'd like to know about this opportunity.</p>