title: python - list comprehension without assignment
body: <p>Today I was parsing a directory index with a list of paths to zip files using BeautifulSoup and came across an interesting thing.  Let's assume I would like to take all the <code>href</code> properties of the tags I got and put them directly into a Queue:</p>
  
  <pre><code>q = Queue.Queue()
  [q.put(tag['href']) for tag in soup.findAll('a')]
  </code></pre>
  
  <p>I've never run into a situation like this before where a comprehension could be used inline without assigning it to anything, just to generated another iterator through some routine call.  Is this considered bad practice?  Is it "pythonic", per se?  Was there a better one-liner to put all the items into the queue?</p>