code: def find_commands_module(app_name):
      
      parts = app_name.split('.')
      parts.append('commands')
      parts.reverse()
      part = parts.pop()
      path = None
  
      #Load the module if needed
      try:
          f, path, descr = imp.find_module(part, path)
      except ImportError as e:
          if os.path.basename(os.getcwd()) != part:
              raise e
          else:
              try:
                  if f:
                      f.close()
              except UnboundLocalError:
                  log.error("Could not import module {0} at path {1}.  Sys.path is {2}".format(part, path, sys.path))
  
      #Go down level by and level and try to load the module at each level
      while parts:
          part = parts.pop()
          f, path, descr = imp.find_module(part, [path] if path else None)
          if f:
              f.close()
      return path
docs: Find the commands module in each app (if it exists) and return the path
      app_name : The name of an app in the INSTALLED_APPS setting
      return - path to the app