title: python default dictionary calling key values
body: <p>I have written a bit of code using 
  setting value</p>
  
  <pre><code> dic["key"] = "someval" 
  </code></pre>
  
  <p>and fetching it the same way</p>
  
  <pre><code> print dic["key"]
  </code></pre>
  
  <p>then I discovered that an alternative way to fetch a dictionary value is to use </p>
  
  <pre><code>print dic.get("key")
  </code></pre>
  
  <p>I want all my code to use the same method, so should I rewrite all using dic.get("key") ?</p>