Boolean Operator Confusion

[Rustom Mody]

On Saturday, April 25, 2015 at 6:21:56 AM UTC+5:30, Terry Reedy wrote:
> Functions that do real calculation should be written as functions that 
> take an input object (or objects) and produce an output object. 

<example snipped>

> Based on my experience reading newbie posts on python list and 
> Stackoverflow, learning to write real functions, without input and 
> print, and repeatable tests, is the most important thing many people are 
> not learning from programming books and classes.

Hear Hear!  Hail Terry!!

I believe what newbies dont get is the separation of 'real calculation'
and other clerical/logistical stuff