How to access the low digits of a list
Rustom Mody
rustompmody at gmail.com
Tue Jun 2 08:35:03 EDT 2015
On Tuesday, June 2, 2015 at 5:53:34 PM UTC+5:30, fl wrote:
> Hi,
>
> I have a list:
>
>
>
>
>
>
> >>> lines
> ['12', '42', '49', '156', '225', '36', '49', '164', '11181', '3100']
>
>
>
> I want to access the last two digits. That is:
>
> ['12', '42', '49', '56', '25', '36', '49', '64', '81', '00']
>
>
> When I try to use lines[3][0] is '1'
> lines[3][1] is '5'
> lines[3][2] is '6'
>
>
> I don't know whether there is a way to know the length of lines[3]. Then, I
> can use a -1 step to get the last two digits. Or, you may have much better
> ways to do that. Python is really too versatile I feel.
len(lines[3]) ??
You can do this: [Hope I am not doing your homework!]
>>> [(x[-2:] if len(x) > 2 else x) for x in lines]
['12', '42', '49', '56', '25', '36', '49', '64', '81', '00']
>>>
For that matter even this works
But I am not sure whats happening or that I like it
>>> [x[-2:] for x in lines]
['12', '42', '49', '56', '25', '36', '49', '64', '81', '00']
>>>
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