title: How to lowercase a portion of text using python
body: <p>I have the following text:</p>
  
  <p><code>ABC=ABC.2016.001.02.Yomama.01234</code></p>
  
  <p>How to lowercase just the Yomama part. I'd like it to look like this:</p>
  
  <p><code>ABA.2016.001.02.yomama.01234</code></p>
  
  <p>How can I accomplish this with python? </p>
  
  <p>Any help would be appreciated. Thanks.</p>