[Tutor] Increase performance of the script

[Peter Otten]

Steven D'Aprano wrote:

> [...]
>> In python 2.6 print statement work as print "Solution"
>> however after import collection I have to use print with
>> print("Solution") is this a known issue ?
> 
> As Peter says, you must have run
> 
> from __future__ import print_function
> 
> to see this behaviour. This has nothing to do with import collection.
> You can debug that for yourself by exiting the interactive interpreter,
> starting it up again, and trying to print before and after importing
> collection.

To be fair to Asad -- I sneaked in the __future__ import into my sample 
code. I did it to be able to write Python 3 code that would still run in his 
2.6 interpreter. 

In hindsight that was not a good idea as it can confuse someone who has 
never seen it, and the OP has yet to learn other more important things.