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AI / Apache Burr Interview questions

What is the difference between step and iterate in a Burr Application?

step/astep and iterate/aiterate both run actions, but at different granularities:

APIBehavior
step / astepRuns exactly one action and returns the tuple (action, result, state). Best for manual, step-by-step control.
iterate / aiterateCalls step repeatedly as a generator until a halt_before/halt_after condition is met, yielding each (action, result, state) along the way.
run / arunA convenience wrapper around iterate that just returns its final value instead of a generator.

for action, result, state in application.iterate(halt_after=["final_action"]):
    print(action.name, result)

You would reach for step when you need to inspect or react to every single action (e.g. custom UI updates between turns), and iterate/run for the common "just run it to completion" case.

Which Burr execution API returns exactly one (action, result, state) tuple per call?
run/arun is best described as:

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