qiskit/transpiler/passes/mapping/trivial_layout.py
def run(self, dag):
        """
        Pick a layout by assigning n circuit qubits to device qubits 0, .., n-1.

        Args:
            dag (DAGCircuit): DAG to find layout for.

        Raises:
            TranspilerError: if dag wider than self.coupling_map
        """
        num_dag_qubits = sum([qreg.size for qreg in dag.qregs.values()])
        if num_dag_qubits > self.coupling_map.size():
            raise TranspilerError('Number of qubits greater than device.')
        self.property_set['layout'] = Layout.generate_trivial_layout(*dag.qregs.values())
def run(self, dag):
        """
        Pick a layout by assigning n circuit qubits to device qubits 0, .., n-1.

        Args:
            dag (DAGCircuit): DAG to find layout for.

        Raises:
            TranspilerError: if dag wider than self.coupling_map
        """
        num_dag_qubits = sum([qreg.size for qreg in dag.qregs.values()])
        if num_dag_qubits > self.coupling_map.size():
            raise TranspilerError('Number of qubits greater than device.')
        self.property_set['layout'] = Layout.generate_trivial_layout(*dag.qregs.values())
Pick a layout by assigning n circuit qubits to device qubits 0, .., n-1.

        Args:
            dag (DAGCircuit): DAG to find layout for.

        Raises:
            TranspilerError: if dag wider than self.coupling_map