How Do I Create Many Precise Instances Of A Class (to Access Their Attributes) Through A While/for Loop?

I'm trying to make an atari breakout style game using pygame, and I want the breakable blocks to be objects with certain attributes that I can change as the game progresses. As suc

Solution 1:

Your example seems to have a lot going on, so I will show you how I would have organized it. I have little experience with PyGame, so I will leave the tips for your Brick class to others, but I will try to help with your storage of Bricks.

This is how I would have defined lay:

def lay():
    return [[Brick() for y in range(12)] for x in range(5)]
layoutm = lay()

This construct is called a list comprehension. It is faster than using "for" and "append" and I think it looks clearer. It will create a list containing 5 lists, which will represent the rows. Each of the rows will contain 12 Bricks.

Now to deal with editing the attributes of the bricks after they have been created:

for (row, y) in zip(layoutm, range(20, 195, 35)):
    for (brick, x) in zip(row, range(20, 660, 55)):
        brickSprite = brick.brick
        brickSprite.rect.topleft = (y, x)

This one is a little more involved. Firstly, Python allows you to iterate over objects in any iterable object, like so:

for num in [0, 1, 2]:
    print(num)

This will print out the values 0, 1 and 2. Now, zip is a function which takes two iterable objects, and returns an iterable containing pairs of the objects. For instance:

for num_name in zip([0, 1, 2], ["zero", "one", "two"]:
    print(num_name)

This will print the values (0, "zero"), (1, "one"), and (2, "two"). Now back to my snippet: first, the outer loop will iterate over each row and its y coordinate. Then, the inner loop will iterate over each brick in that row and its x coordinate. After that, we can perform operations on the bricks.

Notice I did not build the block_list and list_of_sprites in the for loops. I would do that using another list comprehension:

block_list      = [brick       for row in layoutm for brick in row]
list_of_sprites = [brick.brick for brick in block_list]

block_list should now contain every Brick in the layoutm list and list_of_sprites should contain the Sprites corresponding to each Brick. If you decide to make Brick subclass the Sprite class, then your can change this accordingly.