title: Converting specific letters to uppercase or lowercase in python
body: <p>So to return a copy of a string converted to lowercase or uppercase one obviously uses the <code>lower()</code> or <code>upper()</code>.</p>
  
  <p>But how does one go about making a copy of a string with <em>specific</em> letters converted to upper or lowercase.
  For example how would i convert <code>'test'</code> into <code>'TesT'</code></p>
  
  <p>this is honestly baffling me so help is greatly appreciated </p>
  
  <p>got it, thanks for the help Cyber and Matt!</p>