django自定义tag传入参数

#coding=utf-8
from django import template

register = template.Library()

class ZNode(template.Node):
    def __init__(self,mas):
        self.ma=ma
        pass
    def render(self, context):
        return self.ma

def do_z(parser, token):
    tag_name, arg = token.contents.split(None, 1)
    
    return ZNode(arg)
register.tag('z', do_z)