ENH: add last element to repring of sequences

[cpcloud]

No description provided.

[cpcloud]

the mutual recursion should bottom out in _pprint_seq during either the call to next (will raise StopIteration) or it will raise StopIteration when i not in range(min(nitems, len(seq))). i will also change that to xrange because that will be a memory hog for large sequences with the default option. in any case i will write more tests and i still need to fix the unicode literal repring

[cpcloud]

should i be using pprint_thing anytime (even a trivial string) i'm formatting a string?

[ghost]

pprint_thing is actually all about doing unicode properly. whenever you have something
that goes to the console, it's best to use pprint_thing. using it also makes sure
things are kept as unicode until it's time to encode them into a specific encoding.

[cpcloud]

well that's just dandy! thanks

[cpcloud]

@y-p @jreback u ok with this?

[jreback]

what does this fix?

[cpcloud]

just tacks on the last element of a sequence when the user has set max_seq_items to something > 0

[jreback]

ok as long as @y-p ok

[ghost]

related #3456, #3391 and especially #3426,
would have preferred matching behaviour to numpy: [Foo_N ... Foo_N]

[cpcloud]

I can do that. No problem.

[cpcloud]

@y-p N is the display.max_seq_items option value? should it be N / 2?

[ghost]

no preference, if possible align with numpy, I believe it has an equiv in set_printoptions.

[cpcloud]

closing in favor of #3974.