I use format because you can break lines within the parentheses. You also get to name parameters, which is nice and explicit.

I also import print_function from the future, mainly because you can break lines inside the parentheses.

I also use ' '.join([...]) for the same reason when building a large-ish string, you can break lines inside parentheses (or square brackets in this case).

I like breaking lines inside parentheses and other delimiters.