queue.py

class Queue():    
    def __init__(self):
        self.size = 0
        self.list = []

    def enqueue(self, data):
        self.list.append(data)
        self.size += 1

    def dequeue(self):
        try:
            self.size -= 1
            return self.list.pop(0)
        except Exception as error:
            print(f'{error} is not possible')     

    def xprint(self, index):
        print(self.list[index])