When should I use a stack in Python?

When should I use a stack in Python?

You should use a stack when you need to manage data in a last-in, first-out (LIFO) manner, like in undo mechanisms.

Can you give me an example of a stack in Python?

Sure! You can use the collections.deque for a stack. Here's a simple example:

from collections import deque

stack = deque()
stack.append(1)
stack.append(2)
print(stack.pop())  # Outputs: 2

What are the advantages of using a stack?

Stacks are efficient for certain operations, like push and pop, which are O(1). They're also great for managing function calls.

Are there any downsides to using stacks?

Yes, stacks can lead to memory issues if not managed properly, especially with deep recursion. Also, they can be less flexible than other data structures.