new_contents: class Queue():
      def __init__(self,size):
          self.queues = []
          self.size = size
          self.head = -1
          self.tail = -1
  
      def Empty(self):
          if self.head == self.tail:
              return True
          else:
              return False
  
      def Full(self):
          if self.tail - self.head +1 == self.size:
              return True
          else:
              return False
  
      def push(self,content):
          if self.Full():
              print("Quene is Full!")
          else:
              self.queues.append(content)
              self.tail = self.tail + 1
      def out(self):
          if self.Empty():
              print("Quene is Empty!")
          else:
              self.head = self.head + 1
              self.queues.pop(0)
  
  
subject: Create queue.py