Python throws exception on import using pgu with pygame
<p>When I <code>from pgu import pgu as pgui</code> I get the following exception:</p>

<pre><code>Traceback (most recent call last):
  File "C:/path/pyspace/main.py", line 3, in &lt;module&gt;
    from simulator.game import Game
  File "C:\path\pyspace\simulator\game.py", line 5, in &lt;module&gt;
    from simulator.guis.simulategui import SimulateGUI
  File "C:\path\pyspace\simulator\guis\__init__.py", line 2, in &lt;module&gt;
    from simulator.guis.simulategui import SimulateGUI
  File "C:\path\pyspace\simulator\guis\simulategui.py", line 5, in &lt;module&gt;
    from pgu import gui as pgui
  File "C:\Program Files (x86)\Python35-32\lib\site-packages\pgu\gui\__init__.py", line 21, in &lt;module&gt;
    from .container import Container
  File "C:\Program Files (x86)\Python35-32\lib\site-packages\pgu\gui\container.py", line 57
    except StyleError,e:
</code></pre>

<p>when I open the <code>...\gui\container.py</code> with pycharm there is an error that tells me that <code>Python version 3.5 does not support this syntax</code>.  The syntax in <code>container.py</code> in <code>pgu</code> is as follows:</p>

<pre><code>        try:
            # This hack isn't perfect and so it's not enabled by default, but only by
            # themes that explicitly request it.
            alpha = pguglobals.app.theme.getstyle("pgu", "", "themealpha")
        except StyleError,e:
            alpha = False
</code></pre>

<p>I am running python 3.5.1 with pygame 1.9.2a0 and pgu 0.18.  Do I need to install a different version of pgu or different version of a GUI manager for pygame altogether, or is there a simple way to solve this?  I'm assuming I get to install a different GUI manager; but was hoping that there is a simple fix to this.</p>