class Queue:

  def __init__(self):

    self.queue = []

  def enqueue(self, element):

    self.queue.append(element)

​

  def dequeue(self):

    if self.isEmpty():

      return "Queue is empty"

    return self.queue.pop(0)

​

  def peek(self):

    if self.isEmpty():

      return "Queue is empty"

    return self.queue[0]

​

  def isEmpty(self):

    return len(self.queue) == 0

​

  def size(self):

    return len(self.queue)

​

# Create a queue

myQueue = Queue()

​

myQueue.enqueue('A')

myQueue.enqueue('B')

myQueue.enqueue('C')

​

print("Queue: ", myQueue.queue)

print("Peek: ", myQueue.peek())

print("Dequeue: ", myQueue.dequeue())

print("Queue after Dequeue: ", myQueue.queue)

print("isEmpty: ", myQueue.isEmpty())

print("Size: ", myQueue.size())

​