problem

grid = [
  ["1","1","1","1","0"],
  ["1","1","0","1","0"],
  ["1","1","0","0","0"],
  ["0","0","0","0","0"]
]

rows = len(grid)
cols = len(grid[0])

copy_grid = [[0 for i in range(cols)] for j in range(rows)]
# print()
for i in range(0, rows):
    for j in range(0, cols):
        copy_grid[i][j] = grid[i][j]
        
print(copy_grid)