Can you execute a block of code if a python loop is not broken [duplicate]

Question

I'm looking for a more pythonic way to construct this check:

good_result = None
for item in items:
    result = process(item)
    if result.isGood():
        good_result = result
        break
if not good_result:
    deal_with_consequences_of_bad_result()

Assume that we don't want to process all items in the list, so I only want to check for the the first occurrence of a good result.

bSmall · Accepted Answer · 2024-06-05 09:18:17Z

1

Maybe something like this:

good_result = next((result for item in items if (result := process(item)).isGood()), None)

if not good_result:
    deal_with_consequences_of_bad_result()

answered Jun 5, 2024 at 9:18

bSmall

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2 Comments

Jeyekomon Over a year ago

I'd say the for/else approach is more readable. Also if not good_result will not work well for good_result = 0.

bSmall Over a year ago

@Jeyekomon I agree that for/else approach is more readable.

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