title: How to get insert to work for entry widget python
body: <p>I know there are may questions similar to this and I have looked at them but have not found an answer to my problem. </p>
  
  <p>I have created an entry widget and want to insert a default value. Here is function:</p>
  
  <pre><code>def set_Tk_var():
      DP_DR1_BIPS = tk.StringVar()
  
  def entryWidget():
  
      DP_DR1_BIPS.insert(0, 16)
      entryText = DP_DR1_BIPS.get()
      print (entryText)
  </code></pre>
  
  <p>I get this error:
      DP_DR1_BIPS.insert(0, 16)
  AttributeError: 'StringVar' object has no attribute 'insert'</p>
  
  <p>The interesting thing is if I comment out the insert line, I can enter a value in the widget and run this, it does get the value and print it. I am just unable to insert a default.</p>