How do you make python objects appear as strings?

class Card:

  def __init__(self, word, location):
    self.card = word
    self.location = location
    self.matched = False

  def __eq__(self, other):
    return self.card == other.card

  def __str__(self):
    return self.card

from cards import Card
import random

class Game:
  def __init__(self):
    self.size = 4
    self.card_options = ['Add', 'Boo', 'Cat', 'Dev', 'Egg', 'Far', 'Gum', 'Hut']
    self.columns = ["A", "B", "C", "D"]
    self.cards = []
    self.locations = []
    for column in self.columns:
      for i in range(1, self.size + 1):
        self.locations.append(f'{column}{i}')


  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)  

    print(self.cards)                                   


g1 = Game()

g1.set_cards()