What is a function parameter =[] for?

[BartC]

On 22/11/2015 13:21, BartC wrote:
> On 22/11/2015 03:43, Steven D'Aprano wrote:

>> Quite frankly, to call it such demonstrates a considerable level of
>> ignorance about basic programming idioms. Not just Python, but general
>> purpose programming.
>
> I've come to learn that basic idioms are best.

I may have misunderstood what you meant by 'basic idioms' here. It seems 
we disagree as to what is 'basic'.

-- 
bartc