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Python Basic Object-Oriented Python Creating a Memory Game Game Class Part 2

Enes artun
Enes artun
2,364 Points
Posted by Enes artun
Enes artun
2,364 Points

'int' object has no attribute 'columns'

While studying game class part 2, I am getting this error. What should I change here?

'''python

from cards import Card import random

class game:

def __init__(self):
  self.size = 4
  self.card_options = ['Add', 'Boo', 'Cat', 'Dev', 
                       'Egg', 'Far', 'Gum',]
  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 word 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(word, random_location)
      self.cards.append(card)

def create_row(self, num):
  row = []
  for columns 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 '''

''' if name == 'main': game1 = game() game1.set_cards() game1.cards[0].matched = True game1.cards[1].matched = True game1.cards[2].matched = True game1.cards[3].matched = True print(game.create_row(1, 1)) print(game.create_row(2, 2)) print(game.create_row(3, 3)) print(game.create_row(4, 4)) '''

for columns in self.columns:
AttributeError: 'int' object has no attribute 'columns'

Steven Parker
Steven Parker
229,786 Points
Steven Parker
Steven Parker
229,786 Points

When posting code, use Markdown formatting to preserve the code's appearance. This is particularly important with Python where indentation controls program flow. Be aware that the symbols that indicate a Markdown code block are accents (```), not apostrophes (''').

And an even better way to show code is by sharing a snapshot of your workspace.

1 Answer

Steven Parker
Steven Parker
229,786 Points
Steven Parker
Steven Parker
229,786 Points

In the main code (the part not formatted above), the method "create_row" is being called directly on the class "game" instead of the object "game1". This causes the error message you see.

Also, that method is being called with two numeric arguments, but it is defined to take only one.

Additionally, the loop variable in the "create_row" method is "columns" (plural) but the print statement refers to "column" (singular).