title: How to select some of the values from python dictionary and puth them into csv
body: <p>Firslty, I tried to search google for answer, but it turns to be hard to find a good answer since I'm python newbie.</p>
  
  <p>I want to put some values from one dictionary into csv format. It sounds easy for all values:</p>
  
  <pre><code>import csv
  import sys
  mydictionary = {"one" : "1", "two" : 2, "three" : "3"}
  w = csv.writer(sys.stderr)
  w.writerow(mydictionary.values())
  </code></pre>
  
  <p>but what if I want to display only "one" and "three" values?. The next question is, why numbers are displayed "3,2,1" order, not in "1,2,3" order?</p>