switch statement

[vrlab]

Hello,

I am trying to write a switch statement in my vizard script. I am using version 2.1 and I found on the internet that version 2.3 supports the switch function. This is the switch part of my script:

elif num == WAIT_BUTTON1:
data = sid.get()
buttonstate = sid.buttons()
switch(buttonstate):
case 'one':
if buttonstate == sid.BUTTON1:
button1 = 1

case 'two':
if buttonstate == sid.BUTTON2:
button2 = 2

case 'three':
if buttonstate == sid.BUTTON3:
button3 = 3

case 'four':
if buttonstate == sid.BUTTON4:
button4 = 4

case 'five':
if data[2] == 8:
viz.callback(viz.TIMER_EVENT, 'HandleTimer')
viz.starttimer(SAVE_DATA)




this script is not running, and I was wondering if it is because i need version 2.3 of python instead of version 2.1. It could also be a problem with the syntax too. If the problem is that I'm using 2.1 instead of 2.3, how do i upgrade it? I appreciate any help. Thank you in advance.