armory/blender/arm/logicnode/camera/LN_set_active_camera.py

from arm.logicnode.arm_nodes import *

class SetCameraNode(ArmLogicTreeNode):
    """Set the active camera of the active scene."""
    bl_idname = 'LNSetCameraNode'
    bl_label = 'Set Active Camera'
    arm_version = 1

    def init(self, context):
        super(SetCameraNode, self).init(context)
        self.add_input('ArmNodeSocketAction', 'In')
        self.add_input('ArmNodeSocketObject', 'Object')

        self.add_output('ArmNodeSocketAction', 'Out')

add_node(SetCameraNode, category=PKG_AS_CATEGORY)