Automatically quits - pygame

Question

I'm trying to write a snake game in python but my game automatically quites after inputing out of boundaries code.
I don't understand how the coordinates of my rect are >= than the width of my game, because in the screen they are not. I think that's what happens because the game automatically quits.
I'll post my code, below, to be even more clearer
import pygame
from random import randint
pygame.init()
black = (0, 0, 0)
white = (255, 255, 255)
red = (255, 0, 0)
class Game():
width, height = 800, 600
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("Second snake game.")
def __init__(self):
pass
game = Game()
class Player(pygame.sprite.Sprite):
lead_x = game.width/2
lead_y = game.height/2
lead_x_change = 0
lead_y_change = 0
velocity = 0.2
block_size = 10
def __init__(self):
pygame.sprite.Sprite.__init__(self)
def draw_character(self):
self.cube = pygame.draw.rect(game.screen, black, [self.lead_x, self.lead_y, self.block_size, self.block_size])
def change_x_right(self):
self.lead_x_change += -self.velocity
def change_x_left(self):
self.lead_x_change += self.velocity
def change_y_up(self):
self.lead_y_change += -self.velocity
def change_y_down(self):
self.lead_y_change += self.velocity
def move_x(self):
self.lead_x += self.lead_x_change
def move_y(self):
self.lead_y += self.lead_y_change
def stop_moving_x(self):
self.lead_x_change = 0
def stop_moving_y(self):
self.lead_y_change = 0
class Apple():
lead_x = randint(100, 700)
lead_y = randint(100, 500)
block_size = 10
def __init__(self):
pass
def spawn_apple_after_eaten(self):
self.lead_x = randint(100, 700)
self.lead_y = randint(100, 500)
self.apple = pygame.draw.rect(game.screen, red, [self.lead_x, self.lead_y, self.block_size, self.block_size])
def spawn_apple(self):
self.apple = pygame.draw.rect(game.screen, red, [self.lead_x, self.lead_y, self.block_size, self.block_size])
apple = Apple()
player = Player()
gameExit = False
while not gameExit:
game.screen.fill(white)
apple.spawn_apple()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_d:
player.change_x_left()
player.stop_moving_y()
if event.key == pygame.K_a:
player.change_x_right()
player.stop_moving_y()
if event.key == pygame.K_w:
player.change_y_up()
player.stop_moving_x()
if event.key == pygame.K_s:
player.change_y_down()
player.stop_moving_x()
if event.type == pygame.KEYUP:
if event.key == pygame.K_w or event.key == pygame.K_s:
player.stop_moving_y()
if event.key == pygame.K_a or event.key == pygame.K_d:
player.stop_moving_x()
player.move_x()
player.move_y()
player.draw_character()
if player.cube.colliderect(apple.apple):
apple.spawn_apple_after_eaten()
if player.lead_x + player.block_size >= game.width or player.lead_x <= game.width:
gameExit = True
pygame.display.update()
pygame.quit()
quit()

Answer 1

You're setting gameExit to True if the x-coordinate is greater than or equal to game.width or if it's less than or equal to game.width, so it's always True. The second part of the conditional statement should be or player.lead_x <= 0.
if player.lead_x + player.block_size >= game.width or player.lead_x <= 0:
gameExit = True