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Correct!

Insert the missing method to convert from csr (Compressed Sparse Row) to csc (Compressed Sparse Column):

import numpy as np from scipy.sparse import csr_matrix arr = np.array([[0, 0, 0], [0, 0, 1], [1, 0, 2]]) newarr = csr_matrix(arr).tocsc()

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Correct!

import numpy as np
from scipy.sparse import csr_matrix

arr = np.array([[0, 0, 0], [0, 0, 1], [1, 0, 2]])

newarr = csr_matrix(arr).()

    
  




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