How do you do arrays

[Thomas Bunce]

Tryed it and this is what I got (I did go to the web sight)

tom(h=500)$ /tmp/501/Cleanup\ At\ Startup/ptesting-128981347.87.py.command; exit
Input the maximu number of tvalue: 114
Traceback (most recent call last):
  File "/Users/tom/Desktop/ptesting.py", line 20, in ?
    iMatrix[index] = k
IndexError: list assignment index out of range
logout
[Process completed]

The complete listing:

#!/usr/bin/python
import random
import sys
import array
#
### generates a list of numbers between 1 and target
### and uses 23 % of these values.
#

iMatrix = []

tvalue = input('Input the maximu number of tvalue: ')
majorlop1 = int tvalue * .23)
listvalues = range(tvalue)

sep = '- '
index = 0
while index < majorlop1:
   index = index + 1
   k = random.choice(listvalues) + 1
   iMatrix[index] = k
   
while index < majorlop1:
   print '- %s %s' % (iMatrix[index], sep)
#
###
#
I would like to set the size of the List/array independent 
of having to intialialize it prior to use. 
If it help I will say the bad works I am using OSX

   Thanks Tom
In article <1107284817.848551.79000 at c13g2000cwb.googlegroups.com>,
"Kartic" <kartic.krishnamurthy at gmail.com> wrote:

> Tom,
> 
> Before you use iMatrix[index], you have to tell python to use iMatrix
> as an array. You will do that using iMatrix = [] *outside* the loop.
> 
> iMatrix = []
> while index < majorlop1: # rest of the loop statements
> 
> Since you are new, please take a look at the Python tutorial to get you
> started.
> http://docs.python.org/tut/tut.html
> 
> Thanks,
> -Kartic