Hi, Eric & Zach,

Thanks for your kind response. 

@Eric, from your comments am I to understand that you agree with me or state that my understanding is wrong ? :) I couldn't conclude it. 

The point where I find difficult to convince myself is why am I not able to access a[18] when I have already kind of declared it like a = []*19.

Is that really an expected behavior.

I agree with Zak, that nothing * anything = nothing. But, in that case why we even allow that command to work. 

It leads us think that it will create an empty list 19 times whereas it actually doesn't. It's kind of misleading don't you think. 

Many Thanks in advance Eric and Zak for your time on this,