Self not defined in AlienInvasion Program?

Question

I thought that importing pygame and the sys module would suffice but it does not. I'm aware that self is not defined in my code. I'm using the a book for this project and the instructions are as follows:

import pygame
import sys

class AlienInvasion:
    """Overall class to manage assets and behavior"""

def __init__(self):
    """Initiaze the game, and create the game resources."""

pygame.init()
self.screen = pygame.display.set_mode((1200, 800))

when i run my code, I get a self not defined error. find below my code:

import pygame
import sys

class AlienInvasion:
    """Overall class to manage assets and behavior"""

def __init__(self):
    """Initiaze the game, and create the game resources."""

pygame.init()
self.screen = pygame.display.set_mode((1200, 800))

this is the error I get:

you need to indent `def __init__(self)` to be inside class AlienInvasion. spacing in python matters. See [answer](https://stackoverflow.com/a/7024476/3462319) — depperm, May 18 '21 at 15:45
You need to copy the indentation from the book, not just the text. If that's actually how the code appears indented in the book, then *throw the book away* - it's useless. — jasonharper, May 18 '21 at 15:47
One of the first things you should have learned about Python is that indentation is part of the syntax. It takes the place of `{}` for marking code blocks in languages like C, JavaScript, and PHP. — Barmar, May 18 '21 at 15:53

top talent · Answer 1 · 2021-05-18T15:54:02.663

1

you made a mistake in class structure

import pygame
import sys

class AlienInvasion:
    """Overall class to manage assets and behavior"""
   def __init__(self):
       """Initiaze the game, and create the game resources."""
       self.screen = pygame.display.set_mode((1200, 800))

Test:

AlienInvasion()

edited May 18 '21 at 15:54

answered May 18 '21 at 15:53

top talent

615
4
17

Self not defined in AlienInvasion Program?

1 Answers1