Make two Frames occupy 50% of the available width each?
<p>How can I make two <code>Frame</code>s occupy 50% each of the available width of the window? </p>

<p>Right now I'm just letting the contents dictate the widths and using <code>pack(side=Tkinter.LEFT)</code>, and obviously that doesn't make them both equal width.</p>

<p>I tried using <code>grid()</code> instead, but then I couldn't get them to resize when I resize the window. </p>

<p><strong>EDIT</strong></p>

<p>Note that I want to be able to resize the window and the frames should resize with it to always be 50% of the width.</p>