Python Coding challenge - Day 749| What is the output of the following Python Code?

 

Code Explanation:

1. Importing deque

from collections import deque

The deque (double-ended queue) is imported from the collections module.

A deque is like a list but optimized for fast appending and popping from both ends.

2. Creating a deque

dq = deque([1, 2, 3])

A new deque is created with elements [1, 2, 3].

Current dq = deque([1, 2, 3]).

3. Adding element to the left

dq.appendleft(0)

appendleft(0) inserts 0 at the left end of the deque.

Now dq = deque([0, 1, 2, 3]).

4. Adding element to the right

dq.append(4)

append(4) inserts 4 at the right end of the deque.

Now dq = deque([0, 1, 2, 3, 4]).

5. Printing deque as list

print(list(dq))

Converts the deque into a list using list(dq) for easy printing.

Output:

[0, 1, 2, 3, 4]

Final Output:

[0, 1, 2, 3, 4]

500 Days Python Coding Challenges with Explanation