python - Error calling variables from method class -

am working on simple game/app. when phone call variable on web2py view, error:

quack= duck.quack() typeerror: unbound method quack() must called duck instance first argument (got nil instead)

my codes here: in module

from gluon import * class duck():     def quack():          homecoming 'quacks duck'     def walk():          homecoming 'walks person'

in controller

def data_filters(): fils = duck.quack() homecoming dict(fils=fils)

in view:

{{extend 'layout.html'}} {{=fils}}

typically, need create instance of class if want utilize methods.

class duck(): def quack(self): #... x = duck() fils = x.quack()

however, if method doesn't need refer self or attributes of object, can mark static method , go on using duck.quack() now.

class duck(): @staticmethod def quack(): #...

python python-2.7 web2py-modules

Three