How to compare a list indice (grid), with piece elements?

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grid = []
piece = ( (0, 0), (0, 1), (0, 2), (0, 3) )

for f in range(18):
    grilla_vacia.append([])
    for c in range(9):
        if [f][c] in piece:
            grilla_vacia[f].append(1)
        grilla_vacia[f].append(0)

How can I do, to add '1' in the grid, on the positions that are 'busy' by the piece? The commented line throw up this error: 'list index out of range'

indices python-3.6 python-3.7 list
1 Answers

This should help you:

import numpy as np

piece = ( (0, 0), (0, 1), (0, 2), (0, 3) )
grid = np.zeros((9,18),dtype=int).tolist()

for p in piece:
    grid[p[1]][p[0]] = 1

print(grid)

Output:

[[1, 0, 0, 0, 0, 0, 0, 0, 0], [1, 0, 0, 0, 0, 0, 0, 0, 0], [1, 0, 0, 0, 0, 0, 0, 0, 0], [1, 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, 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]]

Here is a solution without numpy:

piece = ( (0, 0), (0, 1), (0, 2), (0, 3) )

grid = [0 for x in range(9*18)]
grid = [grid[i:i+9] for i in range(0, len(grid), 9)]

for p in piece:
    grid[p[1]][p[0]] = 1

print(grid)

Output:

[[1, 0, 0, 0, 0, 0, 0, 0, 0], [1, 0, 0, 0, 0, 0, 0, 0, 0], [1, 0, 0, 0, 0, 0, 0, 0, 0], [1, 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, 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]]
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