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 trialfreddie
2,762 PointsOverwhelming and Code Debugging
Hello everybody,
Feedback: I have to say this video was the reason I stopped learning python almost a year ago. It simply was overwhelming and there are many concepts presented in an 'eat or die fashion'. Thus, I have to ask you people from treehouse to provide further material before this project or just leave it. For now I have restarted the course and feel fine without understandig all of it - it is impossible to understand with the information given by team treehouse.
Question: As soon as I have matching cards, my console returns this :
Traceback (most recent call last):
File "/home/treehouse/workspace/game.py", line 104, in <module>
game.start_game()
File "/home/treehouse/workspace/game.py", line 81, in start_game
if self.check_match(guess1, guess2):
File "/home/treehouse/workspace/game.py", line 51, in check_match
cards.matched == True
AttributeError: 'list' object has no attribute 'matched'
Can anybody explain to me where the problem is?
Thank you very much. And I hope my honest feedback is appreciated
cards.py:
.fun {
background-color: yellow;
color: pink;
font-size: 5000px;
}
class Card():
def __init__(self, name, location):
self.name = name
self.location = location
self.matched = False
def __eq__(self, other):
return self.name == other.name
def __str__(self):
return f'{self.name}'
if __name__ == '__main__':
card1 = Card('egg', 'A1')
card2 = Card('hut', 'B4')
card3 = Card('egg', 'C3')
print(card1 == card2)
print(card1 == card3)
print(card3 == card2)
print(card1)
game.py:
.fun {
background-color: yellow;
color: pink;
font-size: 5000px;
}
from cards import Card
import random
class Game:
def __init__(self):
self.size = 4
self.card_options = ['Add', 'Boo', 'Egg', 'Hut', 'Tab', 'Nut', 'Woo', 'Top']
self.columns = ['A', 'B', 'C', 'D']
self.cards = []
self.locations = []
for column in self.columns:
for num in range(1, self.size + 1):
self.locations.append(f'{column}{num}')
def set_cards(self):
used_locations = []
for name in self.card_options:
for i in range(2):
available_locations = set(self.locations) - set(used_locations)
random_location = random.choice(list(available_locations))
used_locations.append(random_location)
card = Card(name, random_location)
self.cards.append(card)
def create_row(self, num):
row = []
for column in self.columns:
for card in self.cards:
if card.location == f'{column}{num}':
if card.matched:
row.append(str(card))
else:
row.append(' ')
return row
def create_grid(self):
header = ' | ' + ' | '.join(self.columns) + ' |'
print(header)
for row in range(1, self.size + 1):
print_row = f'{row}| '
get_row = self.create_row(row)
print_row += ' | '.join(get_row) + ' |'
print(print_row)
def check_match(self, loc1, loc2):
cards = []
for card in self.cards:
if card.location == loc1 or card.location == loc2:
cards.append(card)
if cards[0] == cards[1]:
cards.matched == True
return True
else:
for card in cards:
print(f'{card.location}: {card}')
return False
def check_win(self):
for card in self.cards:
if card.matched == False:
return False
else:
return True
def check_location(self, time):
while True:
guess = input(f"What's your loction of your {time} card?")
if guess.upper() in self.locations:
return guess.upper()
else:
print("This is not a valid location. It should look like this A1")
def start_game(self):
game_running = True
print('Memory game')
self.set_cards()
while game_running:
self.create_grid()
guess1 = self.check_location('first')
guess2 = self.check_location('second')
if self.check_match(guess1, guess2):
if self.check_win():
print('Congrats! You have guessed them all!')
self.create_grid()
game_running = False
else:
input('Those cards are not a match. Press enter to continue')
print('GAME OVER')
if __name__ == '__main__':
game = Game()
game.start_game()
1 Answer
Steven Parker
231,269 PointsThe last part of the Traceback output is telling you where the problem is. The line "File "/home/treehouse/workspace/game.py", line 51, in check_match" tells you which file, line, and method to look for.
Then, "cards.matched == True" is the actual problem line. And "AttributeError: 'list' object has no attribute 'matched'" is pointing out that "cards" is a list, and it has no attribute named "matched" that you can assign to (even if it contains objects that do have that attribute).
My guess is what you really meant to do was to set the "matched" property on each of the individual card objects that were just compared.