[SOLVED] Help with unlocal variable

[Pythonistapro777]

In my agar.io clone, I need an intersect for the player and cells, but they are in different classes.

Here's the code:

from scene import *
from random import *
class Particle(object):
	def __init__(self, wh):
		self.w = wh.w
		self.h = wh.h
		self.x = randint(0, self.w)
		self.y = randint(0, self.h)
		self.vx = randint(-10, 20)
		self.vy = randint(-10, 20)
		self.colour = Color(random(), random(), random())

	def update(self):
		self.x += self.vx
		self.y += self.vy
		self.vx *= 0
		self.vy *= 0
		if self.x > self.w:
			self.x = self.w
			self.vx *= -1
		if self.x < 0:
			self.x = 0
			self.vx *= -1
		if self.y > self.h:
			self.y = self.h
			self.vy *= -1
		if self.y < 0:
			self.y = 0
			self.vy *= -1
			
	def draw(self):
		self.cells=Rect(self.x, self.y, 5, 5)
		fill(*self.colour)
		ellipse(*self.cells)
		if self.cells.intersects(self.cells):
			pass

class Intro(Scene):
	def setup(self):
		self.player = Rect(240,160, 10, 10)
		self.colour = Color(random(), random(), random())
		num=100
		self.particles = []
		for p in xrange(num):
			self.particles.append(Particle(self.size))
		if self.player.intersects(self.cells):
			pass
			
	def draw(self):
		background(0.00, 0.05, 0.20)
		fill(*self.colour)
		ellipse(*self.player)
		for p in self.particles:
			p.update()
			p.draw()
	
run(Intro(), LANDSCAPE)

When the code is run there is an error popping up. Please help me with this...

Thanks in advance!

[ccc]

Attribute Error: 'Intro' object has no attribute 'cells'. means that the Intro object does not have an attribute called cells. You need to define one if you want your code to work.