human
What is the intention of program below?

def p1(arr):
    for x in arr:
        if isinstance(x, list):
            for y in p1(x):
                yield y
        else:
            yield x
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
No

--- Answer ---
open