WorldViz User Forum iteration over non-sequence error
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#1
03-02-2009, 07:57 AM
 just alex Member Join Date: Nov 2008 Posts: 18
iteration over non-sequence error

This is another noobie question, but whenever I activate what should be the car's driving path, i get a iteration over non-sequence error and I'm not sure how to fix it.

Code:
```import viz
import math
import vizmat
import vizinfo
import vizact
from lookingat import LookingAt
viz.go()

#PORT_PPT = 1

#ppt.command(3,"",1,1,5) #scales ppt tracking on xyz axis

#collisions on
viz.collision(viz.ON)
view = viz.get(viz.MAIN_VIEWPOINT)
view.rotate(0,1,0,90)

#gonna comment out the collision for now, it's registering when the avatar touches
#ground as a collision

#This function is called when a collision occurs
def mycollision(info):
print 'Collided'

#Create a callback for a collision event
viz.callback(viz.COLLISION_EVENT, mycollision)

#PORT_INTERSENSE = 2
#viz.tracker()
#tracker.reset()

def mykeyboard(key):

#If the R key is pressed, reset the head orientation
if key in ['r','R']:
tracker.reset()

#Create a keyboard callback
viz.callback(viz.KEYBOARD_EVENT,mykeyboard)

#Add the street and drop it a little bit to be below the avatars feet.
street.translate(0,-.2,0)

males = []
females = []
walking = []
whichturn = 0

#List the timers.
WALKING = 0
DRIVING = 1
BLINDLOOK = 2
MALEMEETING = 3
FEMALEMEETING = 4
SITTINGWOMAN=5
FREEZESITTER=6
THROWINGMAN =7
HOLDVIEW = 8
TIMING = 9

bodyparts = ['male_legs.cmx','male_torso_LS.cmx','male_shoes.cmx']
maleclothes = ['Male/clothes/male1.jpg','Male/clothes/male2.jpg','Male/clothes/male3.jpg']
#Make some avatars.
for i in range(3):
male.translate(i,0,0)
for j in bodyparts:
male.texture(clothes,j)
males.append(male)

for i in range(2):
female.translate(i,0,0)
females.append(female)

#Set up paramters for walking guy.
males[0].translate(0,0,-5)
males[0].rotate(0,1,0,-90)
males[0].whichturn = 0
males[0].set = [[1.5,0,-5],[1.5,0,15],[5,0,15],[-5,0,-5]]
males[0].end = 4
males[0].state(1)
walking.append(males[0])

#Set up paramters for walking girl.
females[0].translate(1,0,-7)
females[0].rotate(0,1,0,-90)
females[0].whichturn = 0
females[0].set = [[1.5,0,0],[1,0,15],[2,0,15],[-5,0,-5]]
females[0].end = 4
females[0].state(1)
walking.append(females[0])

#set car stuff
car.translate(-1.5,0,8)
car.rotate(0,1,0,180)

#set car path
positions = [[-1.5,0,8],[-1.5,0,0],[-1.5,0,-3]]

for x in range(0,len(positions)):
cp.setPosition(positions[x])

path.constantspeed(viz.ON,1)

path.loop(viz.LOOP)

path.translatemode(viz.BEZIER)

path.setAutoRotate(viz.ON)

#Set up for meeting.
males[1].translate(-9,0,21)
females[1].translate(2,0,7)
females[1].state(1)
malemoves = [2,2,4,4,2,4,4,4,4,4,4,2,2,12]
femalemoves = [6,5,12,12,1]
females[1].rotate(0,1,0,-55)
males[1].rotate(0,1,0,135)
males[1].state(1)

#Set up for throwing man.
males[2].translate(11,0,7)
males[2].state(1)

#Set up for timing.
timebomb = 0

def onkeydown(key):
if key == '0':
viz.starttimer(WALKING, .1, viz.PERPETUAL)

if key == '2':
males[1].goto(1.6,0,7.7)
females[1].spinto(0,1,0,-55)
females[1].state(12)
viz.starttimer(MALEMEETING,.1)
viz.starttimer(FEMALEMEETING,.1)

if key == '7':
viz.starttimer(DRIVING,.1)

if key == '4':
viz.starttimer(THROWINGMAN,.1)

if key == 's':
print 's'
viz.starttimer(TIMING,1, viz.PERPETUAL)

def ontimer(num):
global gravity, timebomb
if num == WALKING:
for agent in walking:
agentposition = agent.get(viz.POSITION)
agentgap = vizmat.Distance(agentposition, agent.set[agent.whichturn])
if agentgap < .1:
agent.whichturn += 1
agent.state(1)
if agent.whichturn == agent.end:
agent.whichturn = 0

walk = vizact.walkto(agent.set[agent.whichturn][0],agent.set[agent.whichturn][1],agent.set[agent.whichturn][2])

if num == DRIVING:
for agent in DRIVING:
path.play()

if num == MALEMEETING:
if len(malemoves)>1:
animation = malemoves.pop(0)
duration = males[1].getduration(animation)
males[1].execute(animation)
viz.starttimer(MALEMEETING, duration-.15)
else:
animation = malemoves.pop(0)
males[1].state(animation)

if num == FEMALEMEETING:
if len(femalemoves)>1:
animation = femalemoves.pop(0)
duration = females[1].getduration(animation)
females[1].execute(animation)
viz.starttimer(FEMALEMEETING, duration-.15)
else:
animation = femalemoves.pop(0)
females[1].state(animation)

if num == THROWINGMAN:
males[2].execute(9)
males[2].execute(1)
viz.starttimer(THROWINGMAN, 10)

if num == HOLDVIEW:
view.translate(-8.5,1.5,-2)

if num == TIMING:
print timebomb
timebomb += 1

if timebomb == 1:
onkeydown('0')

elif timebomb == 3:
onkeydown('4')

elif timebomb == 10:
onkeydown('2')

elif timebomb == 20:
onkeydown('3')

elif timebomb == 30:
onkeydown('1')

elif timebomb == 80:
viz.quit()

viz.callback(viz.TIMER_EVENT,ontimer)

viz.callback(viz.KEYDOWN_EVENT,onkeydown)
viz.starttimer(HOLDVIEW,.001, viz.PERPETUAL)```
#2
03-02-2009, 09:24 AM
 farshizzo WorldViz Team Member Join Date: Mar 2003 Posts: 2,849
Can you post the Python traceback error message? Python error messages usually tell you the exact line of code that caused the error and the reason for the error.
#3
03-04-2009, 12:41 PM
 just alex Member Join Date: Nov 2008 Posts: 18
Here's the error
Traceback (most recent call last):
File "fixin' streetscene.py", line 199, in ontimer
for agent in DRIVING:
TypeError: iteration over non-sequence

it tells me where the problem is, but I don't know how to fix it.
#4
03-04-2009, 12:58 PM
 farshizzo WorldViz Team Member Join Date: Mar 2003 Posts: 2,849
The error says you are iterating over an object which is not a list or sequence. It's occurring on the line "for agent in DRIVING:"

Looking at your code, the variable DRIVING is being assigned an integer value, which is not a list or sequence. You need to fix that line of code so it iterates over a list or sequence object.

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