On Fri, Jan 15, 2016 at 10:53 PM, Cameron Simpson <c...@zip.com.au> wrote: > On 15Jan2016 22:20, boB Stepp <robertvst...@gmail.com> wrote:
>> I always get an empty list, which is actually what I was expecting, so >> I do not see how s[i:i] can ever equal [x]. > > > It isn't an equality test (==), it is an assignent. It is saying "set the > zero length sequence at index i to the one element sequence [x]". Ah! That makes sense. >>>>> things.insert(-1, 'What the heck?!?') >>>>> things >> >> [0, 'Hmm...', 3, 'WhackABunny', 6, 'What the heck?!?', '?'] >> >> "...at the index..." to me would mean that 'What the heck?!?' should >> become the last item in the list. Again, the interpreter help gave >> what I was expecting. > > > To me it means "insert 'x' so that its index is 'i'". But that's my point! In my example x (here 'What the heck?!?') is *not* at index i (here, -1). Instead it winds up at index -2. But this fits in perfectly with the interpreter help, since it winds up *before* index i (-1). -- boB _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
