title: Appending text to label tkinter
body: <p>I'm stuck with a script in Python 3. I want to append additional text to already existing label in tkinter.</p>
  
  <p>I attempted this:</p>
  
  <pre><code>def labelConfig(string,append=False):
      if append:
          label.configure(text+=string)
      else:
          label.configure(text=string)
  </code></pre>
  
  <p>But it won't compile... How can I do this properly?</p>