title: TypeError: 'module' object is not iterable
body: <p>I have a <code>main.py</code> file. When I execute this, it gives me the following error. Does anyone have any clue about this problem? Thanks in advance.</p>
  
  <p><strong>main.py</strong></p>
  
  <pre><code>urls = ("/poems(.*)", "poem.Poems")
  app = web.application( urls, globals() )
  
  if __name__ == "__main__":
  app.run()
  </code></pre>
  
  <p><strong>Error Message:</strong></p>
  
  <pre><code>Traceback (most recent call last):
  File "memory.py", line 24, in &lt;module&gt;
  app = web.application( urls, globals() )
  File "/lib/python2.7/site-packages/web.py-0.40.dev0-   py2.7.egg/web/application.py", line 62, in __init__
  self.init_mapping(mapping)
  File "/lib/python2.7/site-packages/web.py-0.40.dev0-py2.7.egg/web/application.py", line 130, in init_mapping
  self.mapping = list(utils.group(mapping, 2))
  File "/lib/python2.7/site-packages/web.py-0.40.dev0-py2.7.egg/web/utils.py", line 529, in group
  seq = iter(seq)
  TypeError: 'module' object is not iterable
  </code></pre>