title: How do I change the index values of a Pandas Series
body: <p>(Sorry if this question is dumb or not clear, I am new to programming)</p>
  
  <p>I want to know how I can change the index values of a Pandas Series from the regular integer value that they default to, to values within a list that I have.
  e.g.</p>
  
  <pre><code>x = pd.Series([421, 122, 275, 847, 175])
  
  index_values = ['2014-01-01', '2014-01-02', '2014-01-03', '2014-01-04',
                 '2014-01-05'] 
  </code></pre>
  
  <p>how do I get the dates in the <code>index_values</code> list to be the indexes in the Series that I've created <code>x</code></p>