title: python "multiple" combine/chain list comprehension
body: <p>I am quite new to python and I have been learning list comprehension alongside python lists and dictionaries.</p>
  
  <p>So, I would like to do something like:</p>
  
  <pre><code>[my_functiona(x) for x in a]
  </code></pre>
  
  <p>..which works completely fine.</p>
  
  <p>However, now I'd want to do the following:</p>
  
  <pre><code>[my_functiona(x) for x in a] &amp;&amp; [my_functionb(x) for x in a]
  </code></pre>
  
  <p>..is there a way to combine or chain such list comprehension? - where the second function uses the result of the first list. SHortly speaking, I would like to apply <code>my_functiona</code> and  <code>my_functionb</code> sequentuially to list <code>a</code></p>
  
  <p>I did try googling this - but could not find anything satisfactory.
  Sorry if this is a stupid 101 question!</p>