IndexError when trying to print a list of routes

      from app.views import app as home_app         
      from app.api import app as api_app    
      main_app = bottle.Bottle()                                
      
      @main_app.route('/static/<filepath:path>')    
      def server_static(filepath):         
          return bottle.static_file(filepath, root='static')    
                                  
      main_app.merge(home_app.routes)                               
      main_app.mount("/api/", api_app)                                            
      print("DEBUG %s:" % main_app.routes)     

Traceback (most recent call last):
  File "./manage.py", line 93, in <module>
    args.func(args)
  File "./manage.py", line 62, in serve
    print("DEBUG %s:" % main_app.routes)
  File "/home/oznt/Software/tiny-cms/tiny/bottle.py", line 616, in __repr__
    cb = self.get_undecorated_callback()
  File "/home/oznt/Software/tiny-cms/tiny/bottle.py", line 598, in get_undecorated_callback
    func = func[0]
IndexError: list index out of range

@@ -593,7 +593,9 @@ class Route(object):
                 # pick first FunctionType instance from multiple arguments
                 func = filter(lambda x: isinstance(x, FunctionType),
                               map(lambda x: x.cell_contents, attributes))
-                func = list(func)[0]  # py3 support
+                func = list(func)  # py3 support
+                if len(func) > 0:
+                    func = func[0]