class Node(object):
def init(self, data):
self.data = data
self.nextNode = None

class Queue(object):
def init(self):
self.head = None
self.tail = None
self.size = 0

def enqueue(self,data):
self.size += 1
newNode = Node(data)
if self.head is None:
self.head = self.tail = newNode
else:
newNode.nextNode = self.head
self.head = newNode

def dequeue(self):
self.size -= 1
actualNode = self.head
if self.size == 0:
data = self.head.data
del self.head
self.head = self.tail = None
else:
while actualNode.nextNode is not self.tail:
actualNode = actualNode.nextNode
data = self.tail.data
del self.tail
self.tail = actualNode
return data

def queue_size(self):
return self.size

def isEmpty(self):
return self.head == self.tail == None

def print_queue(self):
if self.head is None:
print("The queue is empty")
return
print("****")
actualNode = self.head
while actualNode is not None:
print(actualNode.data)
actualNode = actualNode.nextNode

print("****")
q = Queue()

q.enqueue(10)
q.enqueue(20)
q.enqueue(30)
q.enqueue(40)

q.print_queue()
print("The size of the queue is " + str(q.queue_size()))

print("Popped : " + str(q.dequeue()))
print("Popped : " + str(q.dequeue()))
print("Popped : " + str(q.dequeue()))
print("Popped : " + str(q.dequeue()))
print("The size of the queue is " + str(q.queue_size()))

q.print_queue()

What language is it currently in? What is it supposed to do?

commented: This sentences seems like Python but without nested indents do not execute +7
commented: Yeah. Definitely do not execute unknown code. For me, though, it seems more like JS than Python..... +0
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