Newbie question about list.append

I'm trying to write some Python code... I'm a newbie, and I just can't figure out what I am doing wrong. I get a "can't assign to function call" error on line 10. Here is the code:

import string
import sys


listhorz = []
listvert = []

for line in open('IPs.csv').readlines():
temp = string.strip(line)
listhorz(4)= string.split( 'temp' , ',' ) <== line 10
listvert.append(listhorz)

I split up my code, to make sure is was the list assignment.

Any ideas?
Carrie

What exactly are you trying to do on the



line? It's the (4) that is confusing me and Python.

The


part makes Python (and anyone reading your code) think that you are calling a function called listhorz with one parameter: 4.

With



you're trying to split the string literal 'temp' on the comma character, not the string contained in the variable temp.

Here's what I think you are trying to do:



Am I right?

Yes, that was what I was trying to do. I was trying to create a 2D array, and having a little trouble with the construction, due to my examples being all 1D. I eventually wrote this:

for line in open('IPs.csv').readlines():
temp = string.strip(line)
data.append(string.split( temp , ',' ))


This seems to work very well, and I cleared out all my other issues, but one.

I am trying to loop through a list. Essentially, I have a file, and for every line in the file, I need to compare it to the first 2 entries of every line in my 2D array. I'm comparing IP ranges, if that helps. Like this:

IP IP Region
IP IP Region
IP IP Region

I know I need to use a statement like one of these:

While listentry is not null

or

for entry in list

But, I'm not able to find a good example.

Do you have one?

Thanks,
Carrie

Nevermind, I figured that part out, and went on to another piece of my script.

Now I'm down to just one syntax error, I think.

Carrie