How do I implement a queue and stack in Python?

How do I implement a queue and stack in Python?

You can implement a queue using a list or the collections.deque class. For a stack, a list works well. Would you like examples?

Yes, please provide examples for both.

Sure! For a stack, you can use:

stack = []
stack.append(1)  # Push
stack.append(2)
print(stack.pop())  # Pop

And for a queue:

from collections import deque
queue = deque()
queue.append(1)  # Enqueue
queue.append(2)
print(queue.popleft())  # Dequeue

What are the main differences between a queue and a stack?

A stack follows Last In First Out (LIFO) principle, while a queue follows First In First Out (FIFO). Would you like to know more?