Reason for not allowing import twice but allowing reload()

[alien2utoo at gmail.com]

> Why does one use (something like) idle?
> To experiment.
> 
> So what's your experiment-focus?

True. Experiment only.
What happens (and in environment) when you use
- import module
- from module import name
- from module import name as othername

Idle is start point, but we aren't always going to be Idle-ing, so need to work towards that as well while practicing basic concepts.

[P.S.- I think we are digressing a lot from original thread question.]