On 2016-01-16 16:08, Alan Gauld wrote:
On 16/01/16 23:56, Alan Gauld wrote:
On 16/01/16 22:39, boB Stepp wrote:
So in this model of understanding negative list indexing, should it
be:
mylist = [ 100, 200, 300, 400, 500 ]
^ ^ ^ ^ ^ ^
-5 -4 -3 -2 -1 ?
Well, it has to be this; otherwise, the off-by-one error exist. This
also continues to explain why
mylist.insert(-1, x)
inserts x *before* 500. But in this model, what should go in the
place of "?"?
-0
alex@x301:~$ python3
Python 3.4.3 (default, Oct 14 2015, 20:33:09)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
mylist = [1, 2, 3, 4, 5]
mylist[0:None]
[1, 2, 3, 4, 5]
mylist[0:-0]
[]
-0
0
It appears that None provides a surrogate for -0 which itself evaluates
to 0.
I should have added a :-/ to that in case it wasn't obvious...
It wasn't to me; could you please explain what you mean by ":-/" and/or
where you should have added it?
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