Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Basic Object-Oriented Python Creating a Memory Game Game Class Part 1

Ava Jones
Ava Jones
10,179 Points

line 19 used_locations.append(random_location) Syntax Error

from cards import Card
import random
class Game:
  def __init__(self):
    self.size = 4
    self.card_options = ["Goat", "Maid", "Toad", "Tape", "Hill", "Farm", "Frog", "Girl"]
    self.columns = ["A", "B", "C", "D"]
    self.cards = []
    self.locations = []
    for column in self.columns:
      for num in range(1, self.size + 1):
        print(f'{column}{num}')
  def set_cards(self):
    used_locations = []
    for word in self.card_options:
      for i in range(2):
        available_locations = set(self.locations) - set(self.used_locations)
        random_location = random.choice(list(available_locations)
        used_locations.append(random_location)
        card = Card(word, random_location)
        self.cards.append(card)


if __name__ == '__main__':
  game = Game()
  game.set_cards()
  for card in game.cards:
    print(card)

[MOD: added ```python formatting -cf]

3 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points

Hey Ava Jones , there is a simple typo: a missing close paren on the previous line 18.

Post back if you need more help. Good luck!!!

Ava Jones
Ava Jones
10,179 Points

Now it is saying that Game has no attribute used_locations

Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

Hi! In the assignment to available_locations there is a reference to the non-existing attribute self.used_locations. I think you meant the local variable used_locations (without the self. prefix)

Ava Jones
Ava Jones
10,179 Points

I am getting an error saying available_locations = set(self.locations) - set(self.used_locations) again game has no attribute used_locations

Ava Jones
Ava Jones
10,179 Points

and my if __name__ == '__main__' is glowing red but only the if is glowing

Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

One change at a time. Change

# change
available_locations = set(self.locations) - set(self.used_locations)

# to
available_locations = set(self.locations) - set(used_locations)
Ava Jones
Ava Jones
10,179 Points

Never mind I will just start over thank you though