Indexing in Python is very useful. Before I continue with the guide take a look at this source:

What do you think this will do? Run it and find out. If you guessed it would print 'iexploit' then you were correct. Let's have a look at that source. First we create the list "alist". This holds the strings:
'hello', 'iexploit', 'whats' and 'up'. Then we print alist[1]. So what's that little [1]? Thats the index number of 'iexploit'. When you create a list, everything in the list gets assigned an index number. It starts from left to right with 0. So hello is 0, iexploit is 1, whats is 2 and up is 3. So we print whatever is assigned the index value of 1(iexploit). This can be used in things such as command line arguments. Try this:

This is the output:
['b', 'c']

This is because we used 1:3. This starts at one and ends at the value right before 3. So it prints out 1 and 2. What happens if we do this:

This creates a list running numbers 1 through 10. Then we use a step. This is the third number followed by the second colon. This means it prints out every 2. So we get the following output:
['2', '4', '6', '8', '10']

As you see it printed out all even numbers from 1 to 10.

That's pretty much it for basic python indexing. Hope you learned a bit about it.

--chroniccommand