On 2015-05-16, bruceg113...@gmail.com <bruceg113...@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? Well, if the strings are all in a file, I'd probably just use sed: $ sed 's/^........//g' file1.txt >file2.txt or $ sed 's/^.*://g' file1.txt >file2.txt -- https://mail.python.org/mailman/listinfo/python-list
