slicing lists

[Ivan Illarionov]

On Wed, 07 May 2008 23:29:27 +0000, Yves Dorfsman wrote:

> Is there a way to do:
> x = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
> x[0,2:6]
> 
> That would return:
> [0, 3, 4, 5, 6]

IMHO this notation is confusing.

What's wrong with:
[0]+x[2:6] 
 
> I am surprised this notation is not supported, it seems intuitive. A
> concrete example of the sort of thing I want to do:
> 
> p = file('/etc/passwd').readlines()
> q = [ e.strip().split(':')[0,2:] for e in p ]
> 
> (getting rid of the password / x field)

This works and is clearer:
[[0] + e.strip().split(':')[2:] for e in open('/etc/passwd')]

-- 
Ivan