Python Coding challenge - Day 757| What is the output of the following Python Code?

 Code Explanation:

1. Import deque

from collections import deque

Imports deque (double-ended queue) from the collections module.

deque allows fast appends and pops from both ends (left and right).

2. Create deque

dq = deque([10, 20, 30])

Creates a deque with elements [10, 20, 30].

Now:

dq → [10, 20, 30]

3. Append to the left

dq.appendleft(5)

Adds 5 to the left end of the deque.

Now:

dq → [5, 10, 20, 30]

4. Append to the right

dq.append(40)

Adds 40 to the right end of the deque.

Now:

dq → [5, 10, 20, 30, 40]

5. Remove from the left

dq.popleft()

Removes the first element (5) from the left.

Now:

dq → [10, 20, 30, 40]

6. Remove from the right

dq.pop()

Removes the last element (40) from the right.

Now:

dq → [10, 20, 30]

7. Print deque as list

print(list(dq))

Converts the deque to a list for easy display.

Output:

[10, 20, 30]

Final Output:

[10, 20, 30]

500 Days Python Coding Challenges with Explanation