2 Dec
2016
2 Dec
'16
7:58 p.m.
On 12/1/2016 3:19 AM, Sjoerd Job Postmus wrote:
On Wed, Nov 30, 2016 at 02:32:54PM -0600, Nick Timkovich wrote:
a generator with known length that's not indexable (a rare beast?).
I don't believe a generator is ever indexable.
Not as rare as you might think:
k = set(range(10)) len(k) 10 k[3] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'set' object does not support indexing
It is also not a generator. (It is an iterable.). If an *arbitrary* choice (without replacement) from a set is sufficient, set.pop() works. Otherwise, make a list. If we wanted selection selection from sets to be easy, without making a list, we should add a method that accesses the internal indexable array. -- Terry Jan Reedy