Django Thread-Safety for templatetags

I am coming here, because 开发者_C百科I have a question about Django and Thread. I read the documentation http://docs.djangoproject.com/en/dev/howto/custom-template-tags/#template-tag-thread-safety and I would like to now if the next code could be impacted also, at the rendering context.

class ChatterCountNode(NodeBase):
    def __init__(self, channelname, varname):
        self.channelname = channelname
        self.varname = varname

    def render(self, context):
        channelname = self.getvalue(context, self.channelname)
        varname = self.getvalue(context, self.varname)
        count = get_channel_count(channelname)
        context[varname] = count
        return ''

No, your code is thread safe. See the example they have in the docs with the cycle tag.