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Basic Object-Oriented Python

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Card Class

3:08 with Megan Amendola

Create the logic for the card class for our memory game.

Accomplished in this Video

  • Created a Card class
  • Gave it two instance attributes that are passed in - the word for the card and its location
  • Added another instance attribute that is not passed in - matched
  • Created 2 dunder methods
    • __eq__ = check if two cards are equal
    • __str__ = print out the word for a card

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    Let's get to building the card class. 0:01
    In the init method, it'll take two arguments. 0:11
    One will be the word each card will hold and the second, its location. 0:18
    Inside of the method, we'll need to set the card attribute and 0:25
    the location attribute. 0:28
    Then create a matched attribute that is set to false, so 0:38
    we can track when a card has been matched. 0:41
    Great, now let's tackle checking if two cards 0:48
    are equal by adding a Dunder equals method. 0:51
    It'll take self and other, and inside, 1:01
    it should return true or false if the cards match. 1:04
    Lastly, the ability to print out a card, add a Dunder string method. 1:15
    Return a string with the card inside. 1:28
    Now let's add a Dunder main so we can test out our code. 1:34
    This way, we don't have to worry about our code running 1:38
    when we import our card class into our game class later. 1:43
    Create three instances. 1:48
    Make sure two of them would be equal by having the same word passed in. 2:23
    Now let's check them by printing out some comparisons. 2:30
    The first one should return true, while the second one should return false. 2:46
    Then let's also print out a card to make sure the Dunder string method is working. 2:51
    Let's run the file. 2:59
    And great, it's all working. 3:04

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