TypeError：“ int”对象不可下标

Question

I have looked for other cases like this but none quite apply to me.... or if they do I don't understand how.

What I am trying to do is to filter through a 2D array (this):

blocks = [
[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ],

[  [0], [0], [0], [0], [0], [0], [0], [0], [0], [0]  ]

and find out what the current part is. Sorry if my code is a bit sloppy, I am new to python. This is (part) of my code,

def drawBlock():
for blockL1 in blocks:
    for blokL2 in blocks:
        if blocks[blockL1[blockL2[1]]] == 0:
            pygame.draw.rect(screen, (0, 255, 255), Rect((blockL1 * 32, blockL2 *32), (32, 32)))
            pygame.draw.rect(screen, color, Rect(i * 32, ))
        global blockL2
        blockL2 += 1
    global blockL1
    blockL1 += 1

Answer 1

You've got a couple issues going on here.

The main problem being your use of the for blank in blank_holder .

When you write

for blockL1 in blocks:

its almost identical to writing

for ii in range(len(blocks)):
    blockL1 = blocks[ii]
    ...

meaning that blockL1 is not an integer, or an index of blocks.. it is an element of blocks!

its value would look like: [ [0], [0], [0], [0], [0], [0], [0], [0], [0], [0] ]

Which is a list of lists... where as blocks is a list of lists that contain lists... yeah

when you write

for blockL1 in blocks:
    for blockL2 in blocks:

the value of blockL2 would be a single list [0]

assuming you want to look at the one value contained in blockL2 , you can change:

if blocks[blockL1[blockL2[1]]] == 0:

to:

if blockL2[0] == 0: # the 1 index would go out of bounds for a list length 1

However this code looks like you need the indexed values of blockL1 and blockL2 , so I recommend you loop through lists of their indices (meaning ints )... not their elemnents

def drawBlock():
    for blockL1 in range(len(blocks)):
        for blockL2 in range(len(blockL1)):
            if blocks[blockL1[blockL2[0]]] == 0:
                pygame.draw.rect(screen, (0, 255, 255), Rect((blockL1 * 32, blockL2 *32), (32, 32)))

Hopefully this helps some!