def __init__()

in src/braket/circuits/noises.py [0:0]

• 16 lines of code
• 7 McCabe index (conditional complexity)

    def __init__(self, matrices: Iterable[np.ndarray], display_name: str = "KR"):

        for matrix in matrices:
            verify_quantum_operator_matrix_dimensions(matrix)
            if not int(np.log2(matrix.shape[0])) == int(np.log2(matrices[0].shape[0])):
                raise ValueError(f"all matrices in {matrices} must have the same shape")
        self._matrices = [np.array(matrix, dtype=complex) for matrix in matrices]
        qubit_count = int(np.log2(self._matrices[0].shape[0]))
        if qubit_count > 2:
            raise ValueError("Kraus operators with more than two qubits are not supported.")
        if len(matrices) > 2 ** (2 * qubit_count):
            raise ValueError("The number of Kraus operators is beyond limit.")

        if not is_cptp(self._matrices):
            raise ValueError(
                "The input matrices do not define a completely-positive trace-preserving map."
            )

        super().__init__(qubit_count=qubit_count, ascii_symbols=[display_name] * qubit_count)