Yeah, this seems neatest if you don't like line breaks

pipeline = (

    task(get_data, branch=True)

    | task(step1, workers=20)

    | task(step2, workers=20)

    | task(step3, workers=20, multiprocess=True)

)

Square brackets would create a list and braces would create a set of course. The contents still can be split over different lines-- just pointing that this syntax doesn't do the same thing.