Question

what is the next line?

>> adeque = deque(happy)

>> adeque.append(me)

>> adeque

deque(happymo)
an error statement
deque(happy, me)
deque(h, a, p, p, y, me)

Explanation:

Step1: Understand deque creation

In Python, when aDeque = deque('happy'), each character of the string 'happy' is added as an element to the deque. So initially, the deque contains ['h', 'a', 'p', 'p', 'y'].

Step2: Understand append operation

The append('me') operation adds the string 'me' as a single element to the right - hand side of the deque.

Step3: Determine final deque state

The resulting deque will have elements ['h', 'a', 'p', 'p', 'y', 'me'].

Answer:

deque(['h', 'a', 'p', 'p', 'y','me'])