Viewing file:  liveanimal.py (4.02 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
import atexit, pickle
from nevow import loaders, tags, livepage, inevow
class node:
def __init__(self, question, positive=None, negative=None):
self.question = question
self.positive = positive
self.negative = negative
def clone(self):
return self.__class__(**vars(self))
def isLeaf(self):
return not (self.positive or self.negative)
win = 'winnar'
lose = lambda: node("I give up. What is the animal, and what question describes it?")
def guess(animal):
return node("Is it " + animal + "?", win, lose())
try:
knowledge = pickle.load(file('knowledge', 'rb'))
except:
knowledge = lose()
atexit.register(lambda: pickle.dump(knowledge, file('knowledge', 'wb')))
class AnimalPage(livepage.LivePage):
addSlash = True
def locateChild(self, ctx, segments):
if ctx.arg('fresh') is not None:
global knowledge
knowledge = lose()
return super(AnimalPage, self).locateChild(ctx, segments)
def goingLive(self, ctx, client):
client.oldNode = knowledge
client.node = knowledge
client.send(self.handle_updateDom(ctx))
docFactory = loaders.stan(
tags.html[
tags.head[
tags.directive('liveglue')],
tags.body[
tags.h1["Live Animal"],
tags.div(id='question')[""],
tags.div(id='answer-inputs')[
tags.form(
name='new-question',
pattern="leaf",
onsubmit=[
livepage.server.handle(
'newquestion',
livepage.get('animal').value,
livepage.get('new-question').value),
livepage.stop])[
tags.input(name='animal', id='animal'),
tags.input(name='new-question', id='new-question'),
tags.button['Submit']],
tags.invisible(pattern='branch')[
tags.button(
id="yes-response",
onclick=livepage.server.handle('positiveResponse'))['Yes'],
tags.button(
id="no-response",
onclick=livepage.server.handle('negativeResponse'))['No']]]]])
def handle_updateDom(self, ctx):
client = livepage.IClientHandle(ctx)
yield livepage.set('question', client.node.question), livepage.eol
if client.node.isLeaf():
yield livepage.set('answer-inputs', inevow.IQ(AnimalPage.docFactory).onePattern('leaf')), livepage.eol
else:
yield livepage.set('answer-inputs', inevow.IQ(AnimalPage.docFactory).onePattern('branch')), livepage.eol
def handle_newquestion(self, ctx, animal, question):
client = livepage.IClientHandle(ctx)
newNegative = client.oldNode.clone()
client.oldNode.question = question
client.oldNode.positive = guess(animal)
client.oldNode.negative = newNegative
client.node = knowledge
return self.handle_updateDom(ctx)
def handle_positiveResponse(self, ctx):
client = livepage.IClientHandle(ctx)
client.oldNode = client.node
client.node = client.node.positive
if client.node == win:
client.node = knowledge
yield livepage.set('question', "I win!"), livepage.eol
yield livepage.set(
'answer-inputs',
tags.button(
id="start-over",
onclick=livepage.server.handle('updateDom'))["Start over"]), livepage.eol
else:
yield self.handle_updateDom(ctx), livepage.eol
def handle_negativeResponse(self, ctx):
client = livepage.IClientHandle(ctx)
client.oldNode = client.node
client.node = client.node.negative
return self.handle_updateDom(ctx)
def createResource():
return AnimalPage()
|