I'm going through a tutorial and trying to build a game using Python and struggling to resolve below error. Not sure what I'm missing here can someone help with it


import sys
import pygame
from settings import Settings
from ship import Ship

class AlienInvasion:
    """Overall Class to manage game assets and  behavior.."""

    def __int__(self):
        """Initialize the game and create game resources.."""

        self.settings = Settings()   #pygame.display.set_mode((1200,800))
        self.screen = pygame.display.set_mode((self.settings.screen_width,self.settings.screen_height))
        self.ship = Ship(self)
        #pygame.display.set_caption("Alien Invasion")

        #Set the background color
        #self.bg_color = (230,230,230)

    def run_game(self):
        """ Start the main loop for the game..."""
        running = True
        while running:
            #Watch for Keyboard and mouse events.
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    #running = False

            #Redraw the screen during each pass through the loop

            # Make the most recently drwan screen visible.

if __name__ == '__main__':

    ## Make a game instance and run the game.
    ai= AlienInvasion()


class Settings:
    """A class to store all the settings related for Alien Invasion...! """
    def __int__(self):
        """Initialize game settings..! """
        #screen settings
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (230,230,230)


import pygame

class Ship:
    """ A class to Manage the ship...! """
    def __int__(self,ai_game):
        """ Initialize the ship and set its starting position...! """
        self.screen = ai_game.screen
        self.screen_rect = ai_game.screen.get_rect()

        # Load the ship image and get its rect.
        self.image = pygame.image.load('images/ship.bmp')
        self.rect = self.image.get_rect()

        # Start each new ship at the bottom center of the screen.
        self.rect.midbottom = self.screen_rect.midbottom

    def blitme(self):
        """ Draw the ship at its current location...! """


C:\Users\user\PycharmProjects\pythonLearningProject\venv-dev\Scripts\python.exe C:\Users\user\PycharmProjects\pythonLearningProject\alien_invasion.py 
pygame 2.1.2 (SDL 2.0.18, Python 3.9.0)
Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
  File "C:\Users\user\PycharmProjects\pythonLearningProject\alien_invasion.py", line 45, in <module>
  File "C:\Users\user\PycharmProjects\pythonLearningProject\alien_invasion.py", line 26, in run_game
    for event in pygame.event.get():
pygame.error: video system not initialized

Process finished with exit code 1

enter image description here


1 Answer 1


You have a typo, __int__ instead of __init__ (you forgot the second i), which is the problem.

It doesn't run run pygame.init() so it can't initiate video and it can't display window (and later it would give a problem with events because events can't work when window doesn't exist..)

You could use print() to see which part of code is executed and possibly catch these kinds of issues.


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