title: Is it ok to skip "return None"?
body: <p>I wonder if it is bad manner to skip <code>return None</code>, when it is not needed.</p>
  
  <p>Example:</p>
  
  <pre><code>def foo1(x):
      if [some condition]:
          return Baz(x)
      else:
          return None
  
  def foo2(x):
      if [some condition]:
          return Baz(x)
  
  bar1 = foo1(x)
  bar2 = foo2(x)
  </code></pre>
  
  <p>In both cases, when condition is false, function will return with <code>None</code>.</p>