title: setting url in yaml file for google app engin (page not found) problem
body: <p>I am new to python and I am super excited to learn. I am building my first app on app engin and I am not totally understanding why my yaml file is not resolving to the url that I set up.</p>
  
  <p>here is the code</p>
  
  <pre><code>handlers:
  - url: .*
    script: main.py
  
  - url: /letmein/.*
    script: letmein.py 
  </code></pre>
  
  <p>so if I go to <a href="http://localhost:8080/letmein/" rel="nofollow noreferrer">http://localhost:8080/letmein/</a> I get a link is brooken or page not found error.</p>
  
  <p>here is the python code that I have in letmein.py</p>
  
  <pre><code>from google.appengine.ext import webapp
  from google.appengine.ext.webapp import util
  
  
  class LetMeInHandler(webapp.RequestHandler):
      def get(self):
          self.response.out.write('letmein!')
  
  
  def main():
      application = webapp.WSGIApplication([('/letmein/', LetMeInHandler)],
                                           debug=True)
      util.run_wsgi_app(application)
  
  
  if __name__ == '__main__':
      main()
  </code></pre>
  
  <p>thanks in advance for the help!</p>