Getting a closed interval is awkward. Let's say you want an array of the
integers from a to b, inclusive at both ends. e.g. for a=10 b=15, you want:
[10, 11, 12, 13, 14, 15]
Neither linspace nor arange makes this easy.
arange(a, b) # wrong, it only goes up to 14
arange(a, b+1) # right, but awkw
If you have an array built up out of method chaining, sometimes you need to
filter it at the very end. This can be annoying because it means you have to
create a temporary variable just so you can refer to it in the indexing square
brackets:
_temp = long_and_complicated_expression()
result = _t
