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Your first class

Python · Unit 12: Classes and objects

A dictionary let you group the data about something. A class goes further: it creates a new data type of your own, like int or str.

You write it with class and a capitalized name. pass means "nothing for now". To create an object of that type, you call the class with parentheses.

class Pet:
    pass

toby = Pet()
print(type(toby) == Pet)
print(type(5) == int)

Prints

True
True

The rest of the explanation is in the lesson, which is part of the full plan.

Exercises in this lesson

You do them in the app, which checks them on the spot and explains why.

  1. 1. Complete the code

    Complete it to create the Pet class.

  2. 2. Multiple choice

    In luna = Pet(), what is each thing?

  3. 3. Predict the output

    What does this code print?

  4. 4. Predict the output

    What does this code print?

  5. 5. Complete the code

    Complete it to print Sofia's name.

  6. 6. Predict the output

    What does this code print?

  7. 7. Find the bug

    This program should print Leo's name and grade. Which line has the error?

  8. 8. Put the lines in order

    Put the lines in order to create a book and print its title.

  9. 9. Predict the output

    What does this code print?

  10. 10. Predict the output

    Objects can go in lists too. What does it print?

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