Writing a non-public method

In the lesson, we covered how to add functionality to classes using non-public methods. By defining methods as non-public you're signifying to the user that the method is only to be used inside the package.

In this exercise, you will define a non-public method that will be leveraged by your class to count words.

Diese Übung ist Teil des Kurses

Software Engineering Principles in Python

Kurs anzeigen

Anleitung zur Übung

Counter from collections has been loaded into your environment, as well as the function tokenize().
Add a method named count_words as a non-public method.
Give your non-public method the functionality to count the contents tokens attribute using Counter().
Utilize your new function in the __init__ method.

Interaktive Übung

Versuche dich an dieser Übung, indem du diesen Beispielcode vervollständigst.

class Document:
  def __init__(self, text):
    self.text = text
    # pre tokenize the document with non-public tokenize method
    self.tokens = self._tokenize()
    # pre tokenize the document with non-public count_words
    self.word_counts = self.____()

  def _tokenize(self):
    return tokenize(self.text)
	
  # non-public method to tally document's word counts with Counter
  def ____(self):
    return ____(____.tokens)

Code bearbeiten und ausführen