qiskit/dagcircuit/dagcircuit.py
def _map_condition(self, wire_map, condition):
        """Use the wire_map dict to change the condition tuple's creg name.

        Args:
            wire_map (dict): a map from wires to wires
            condition (tuple): (ClassicalRegister,int)
        Returns:
            tuple(ClassicalRegister,int): new condition
        """
        if condition is None:
            new_condition = None
        else:
            # Map the register name, using fact that registers must not be
            # fragmented by the wire_map (this must have been checked
            # elsewhere)
            bit0 = (condition[0], 0)
            new_condition = (wire_map.get(bit0, bit0)[0], condition[1])
        return new_condition
def _map_condition(self, wire_map, condition):
        """Use the wire_map dict to change the condition tuple's creg name.

        Args:
            wire_map (dict): a map from wires to wires
            condition (tuple): (ClassicalRegister,int)
        Returns:
            tuple(ClassicalRegister,int): new condition
        """
        if condition is None:
            new_condition = None
        else:
            # Map the register name, using fact that registers must not be
            # fragmented by the wire_map (this must have been checked
            # elsewhere)
            bit0 = (condition[0], 0)
            new_condition = (wire_map.get(bit0, bit0)[0], condition[1])
        return new_condition
Use the wire_map dict to change the condition tuple's creg name.

        Args:
            wire_map (dict): a map from wires to wires
            condition (tuple): (ClassicalRegister,int)
        Returns:
            tuple(ClassicalRegister,int): new condition