title: How do I properly use a backslash to continue a line in an if statement?
body: <p>e.g. D, if sum_p is not zero.</p>
  
  <pre><code>D = 1/sum_p if sum_p \
      else 0
  </code></pre>
  
  <p>What if I want to return the value? Should I do:</p>
  
  <pre><code>return 1/sum_p if sum_p \
  else 0
  </code></pre>
  
  <p>or just write</p>
  
  <pre><code>if...
  else: return 0
  </code></pre>