Heads up! To view this whole video, sign in with your Courses account or enroll in your free 7-day trial. Sign In Enroll
Well done!
You have completed Basic Object-Oriented Python!
You have completed Basic Object-Oriented Python!
Preview
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
-
Related Discussions
Have questions about this video? Start a discussion with the community and Treehouse staff.
Sign upRelated Discussions
Have questions about this video? Start a discussion with the community and Treehouse staff.
Sign up
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
You need to sign up for Treehouse in order to download course files.
Sign upYou need to sign up for Treehouse in order to set up Workspace
Sign up