Fastest way to remove the first x characters from a very long string

[Joel Goldstick]

On Sat, May 16, 2015 at 9:28 AM,  <bruceg113355 at gmail.com> wrote:
> I have a string that contains 10 million characters.
>
> The string is formatted as:
>
> "0000001 : some hexadecimal text ... \n
> 0000002 : some hexadecimal text ... \n
> 0000003 : some hexadecimal text ... \n
> ...
> 0100000 : some hexadecimal text ... \n
> 0100001 : some hexadecimal text ... \n"
>
> and I need the string to look like:
>
> "some hexadecimal text ... \n
> some hexadecimal text ... \n
> some hexadecimal text ... \n
> ...
> some hexadecimal text ... \n
> some hexadecimal text ... \n"
>
> I can split the string at the ":" then iterate through the list removing the first 8 characters then convert back to a string. This method works, but it takes too long to execute.
>
> Any tricks to remove the first n characters of each line in a string faster?
>
slicing might be faster than searching for :

Do you need to do this all at once?  If not, use a generator

> Thanks,
> Bruce
> --
> https://mail.python.org/mailman/listinfo/python-list



-- 
Joel Goldstick
http://joelgoldstick.com