title: How to invoke a function on an object dynamically by name?
body: <p>In Python, say I have a string that contains the name of a class function that I know a particular object will have, how can I invoke it?</p>
  
  <p>That is:</p>
  
  <pre><code>obj = MyClass() # this class has a method doStuff()
  func = "doStuff"
  # how to call obj.doStuff() using the func variable?
  </code></pre>