Implementing a queue for printer tasks

In the last video, you learned that queues can have multiple applications, such as managing the tasks for a printer.

In this exercise, you will implement a class called PrinterTasks(), which will represent a simplified queue for a printer. To do this, you will be provided with the Queue() class that includes the following methods:

enqueue(data): adds an element to the queue
dequeue(): removes an element from the queue
has_elements(): checks if the queue has elements. This is the code:

    def has_elements(self):
      return self.head != None

You will start coding the PrinterTasks() class with its add_document() and print_documents() methods. After that, you will simulate the execution of a program that uses the PrinterTasks() class.

This exercise is part of the course

Data Structures and Algorithms in Python

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Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

class PrinterTasks:
  def __init__(self):
    self.queue = Queue()
      
  def add_document(self, document):
    # Add the document to the queue
    self.____.____(document)
      
  def print_documents(self):
    # Iterate over the queue while it has elements
    while self.____.____():
      # Remove the document from the queue
      print("Printing", self.____.____())

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