Break and Continue: While Loops

[Chris Angelico]

On Thu, Jun 23, 2016 at 8:15 PM, BartC <bc at freeuk.com> wrote:
> Actually pretty much any expression can be used, because Python can
> interpret almost anything as either True or False. Don't ask for the rules
> because they can be complicated, but for example, zero is False, and any
> other number is True. I think.

The rules are very simple. Anything that represents "something" is
true, and anything that represents "nothing" is false. An empty
string, an empty list, an empty set, and the special "None" object
(generally representing the absence of some other object) are all
false. A string with something in it (eg "Hello"), a list with
something in it (eg [1,2,4,8]), etc, etc, are all true.

ChrisA