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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove_negative_entries(A):
 r"""Remove all negative entries from sparse matrix. Aplus=max(0, A) Parameters A : (M, M) scipy.sparse matrix Input matrix Returns ------- Aplus : (M, M) scipy.sparse matrix Input matrix with negative entries set to zero. """

    A = A.tocoo()

    data = A.data
    row = A.row
    col = A.col

    """Positive entries"""
    pos = data > 0.0

    datap = data[pos]
    rowp = row[pos]
    colp = col[pos]

    Aplus = coo_matrix((datap, (rowp, colp)), shape=A.shape)
    return Aplus