queue = []
# Enqueue
queue.append('A')
queue.append('B')
queue.append('C')
print("Queue: ", queue)
# Dequeue
element = queue.pop(0)
print("Dequeue: ", element)
# Peek
frontElement = queue[0]
print("Peek: ", frontElement)
# isEmpty
isEmpty = not bool(queue)
print("isEmpty: ", isEmpty)
# Size
print("Size: ", len(queue))
#Python