title: How to horizontally center a widget using grid()?
body: <p>I am using <code>grid()</code> to place widgets in a tkinter window. I am trying to put a label on the horizontal center of a window and have it stay there, even if the window is resized. How could I go about doing this?</p>
  
  <p>I don't want to use <code>pack()</code>, by the way. I would like to keep using <code>grid()</code>.</p>