title: Issue with pyramid framework wit Python 3.3 version
body: <p>Could you please help me to solve below error while starting my pyramid project ?</p>
  
  <pre><code>c:\Python33\Scripts\v_env_testmvc_cmd\Scripts&gt;activate
  (v_env_testmvc_cmd) c:\Python33\Scripts\v_env_testmvc_cmd\Scripts&gt;cd..
  (v_env_testmvc_cmd) c:\Python33\Scripts\v_env_testmvc_cmd&gt;cd ..
  (v_env_testmvc_cmd) c:\Python33\Scripts&gt;pserve.exe MyProject\development.ini --reload
  Traceback (most recent call last): File "c:\Python33\Scripts\pserve-script.py", line 9, in &lt;module&gt;
      load_entry_point('pyramid==1.5a3', 'console_scripts', 'pserve')()
    File "c:\Python33\lib\site-packages\distribute-0.6.49-py3.3.egg\pkg_resources.py", line 345, in load_entry_point
      return get_distribution(dist).load_entry_point(group, name)
    File "c:\Python33\lib\site-packages\distribute-0.6.49-py3.3.egg\pkg_resources.py", line 2382, in load_entry_point
      return ep.load()
    File "c:\Python33\lib\site-packages\distribute-0.6.49-py3.3.egg\pkg_resources.py", line 2088, in load
      entry = __import__(self.module_name, globals(),globals(), ['__name__'])
    File "c:\Python33\lib\site-packages\pyramid-1.5a3-py3.3.egg\pyramid\scripts\pserve.py", line 31, in &lt;module&gt;
      from pyramid.paster import setup_logging
    File "c:\Python33\lib\site-packages\pyramid-1.5a3-py3.3.egg\pyramid\paster.py", line 10, in &lt;module&gt;
      from pyramid.scripting import prepare
    File "c:\Python33\lib\site-packages\pyramid-1.5a3-py3.3.egg\pyramid\scripting.py", line 1, in &lt;module&gt;
      from pyramid.config import global_registries
    File "c:\Python33\lib\site-packages\pyramid-1.5a3-py3.3.egg\pyramid\config\__init__.py", line 9, in &lt;module&gt;
      from webob.exc import WSGIHTTPException as WebobWSGIHTTPException
    File "c:\Python33\lib\site-packages\webob-1.3.1-py3.3.egg\webob\exc.py", line 1134, in &lt;module&gt;
      from paste import httpexceptions
    File "c:\Python33\lib\site-packages\paste-1.7.5.1-py3.3.egg\paste\httpexceptio ns.py", line 77, in &lt;module&gt;
      from paste.wsgilib import catch_errors_app
    File "c:\Python33\lib\site-packages\paste-1.7.5.1-py3.3.egg\paste\wsgilib.py", line 331
      raise exc_info[0], exc_info[1], exc_info[2]
                       ^ SyntaxError: invalid syntax
  </code></pre>
  
  <p>Could you please help me to solve all this errors ?</p>
  
  <p>File name which has this issue is: <code>C:\Python33\Lib\site-packages\paste-1.7.5.1-py3.3.egg\paste\wsgilib.py</code></p>