Quick Check: Python yield from

Check your understanding of generator delegation with yield from, delegated iterables, subgenerator return values, and ordinary yield.

5 questions ~5 min

Knowledge check

Check your understanding of generator delegation with yield from, delegated iterables, subgenerator return values, and ordinary yield.

You can retake this quiz whenever you like.

0:00

0/0

What does `yield from items` do inside a generator when `items` is iterable?

yield from delegates iteration, so the iterable's produced values reach the current generator's caller.
Which value can be used after `yield from`?

The expression must have an iterable value; a list is one valid example.
What happens after a delegated iterable is exhausted?

When delegation ends, execution resumes in the current generator after the yield from expression.
If a delegated generator finishes with `return "done"`, what can the surrounding generator receive from `yield from`?

The value carried by the delegated generator's StopIteration becomes the value produced by yield from.
What is the key difference between `yield items` and `yield from items` when `items` is a list?

yield produces the list object itself, while yield from delegates its iteration.

Back to lesson Next: Python Argument Unpacking

What does `yield from items` do inside a generator when `items` is iterable?