from collections import deque

# Create a new deque to act as a queue
request_queue = deque()

# Add elements to the right (enqueue)
request_queue.append('User A Request')
request_queue.append('User B Request')
request_queue.append('User C Request')

print(f"Current queue: {list(request_queue)}")

# Remove elements from the left (dequeue)
next_request = request_queue.popleft()
print(f"Processing: {next_request}")
print(f"Queue after processing: {list(request_queue)}")

# You can also use it as a stack (LIFO) by using append() and pop()
# Or add/remove from both ends efficiently with appendleft() and pop()