code: def create_empty(cls, val=0x00):
          
          userdata_dict = {}
          for i in range(1, 15):
              key = 'd{}'.format(i)
              userdata_dict.update({key: val})
          return userdata_dict
docs: Create an empty Userdata object.
  
          val: value to fill the empty user data fields with (default is 0x00)