How can I use collections.deque as a stack in Python?

How can I use collections.deque as a stack in Python?

You can use collections.deque to implement a stack by using the append() method to add items and pop() to remove them.

Can you show me a code example?

Sure! Here's a simple example:

from collections import deque

stack = deque()
stack.append(1)  # Push 1 onto the stack
stack.append(2)  # Push 2 onto the stack
print(stack.pop())  # Pop from the stack, outputs 2

What are the advantages of using deque over a list?

deque is optimized for fast appends and pops from both ends, making it more efficient than a list for stack operations.

Are there any limitations I should be aware of?

One limitation is that deque does not support random access like lists do, so accessing elements by index is slower.