سؤال 27

A list starts as `items = [1]`. What is its value after `items.extend([2, 3])`?

`[1, [2, 3]]`
`[2, 3]` while `items` stays `[1]`
`[1]` because extend returns an iterator
`[1, 2, 3]`پاسخ درست

توضیح

The iterable supplies two successive elements, and `extend` appends each of them to the existing list. Treating the argument as one nested element confuses this method with `append`.

توضیح

ادامهٔ این آزمون