def matrix_zeros(m, n, **options):
    format = options.get('format', 'sympy')
    dtype = options.get('dtype', 'float64')
    spmatrix = options.get('spmatrix', 'csr')
    if format == 'sympy':
        return zeros(m, n)
    elif format == 'numpy':
        return _numpy_zeros(m, n, **options)
    elif format == 'scipy.sparse':
        return _scipy_sparse_zeros(m, n, **options)
    raise NotImplementedError('Invaild format: %r' % format)
Verify the data in this blob.
dataset/ETHPy150Open sympy/sympy/sympy/physics/quantum/matrixutils.py/matrix_zeros--crossover with--dataset/ETHPy150Open google/grr/grr/lib/rdfvalues/crypto.py/SignedBlob.Verify