[Tutor] loop print issue

[Mats Wichmann]

On 10/11/19 9:32 AM, Alan Gauld via Tutor wrote:

> You are using counters so you are writing the first 36 lines(0-35)
> to output1. Then you write the rest to output2. If that is what
> you want it would be a lot easier to say so explicitly:
> 
> with open('output1.txt','w') as output1
>     for count in range(36):
>         output1.write(xlist_file.readline())
> 
> with open('output2.txt','w') as output2:
>     for line in xlist_file:
>         output2 write(line)
> 
> No need for resetting sys.stdout.
> No need for fancy '+' modes.
> No need for complex counters or if statements.

Just for grins, here's another way to implement the idiom of splitting a 
list into chunks:

import itertools

with open('output1.txt', 'w') as output1:
     output1.writelines(itertools.islice(xlist_file, 36))
with open('output2.txt', 'w') as output2:
     # previous islice has "consumed" the 36 lines, continue to end
     output2.writelines(itertools.islice(xlist_file, None))