def setup_wall_collision(self,playerob):
        self.b.cTrav=CollisionTraverser() #ok so because this is the defautl
        #I don't have to call some "traverse" method
        self.CHP=CollisionHandlerPusher() #which means this should be filled
        self.col_Node=CollisionNode("sphere")

        self.col_NodeNP=playerob.attachNewNode(self.col_Node)# I think char object/geom goes here with attachNode
        self.col_NodeNP.set_tag("player_col_tag","player_col_tag_value")

        self.col_Node.setFromCollideMask(BitMask32.bit(3))
        self.col_Node.setIntoCollideMask(BitMask32.bit(0))

        self.col_body=CollisionSphere((0,0,0),2)


        self.col_Node.addSolid(self.col_body)
        self.CHP.addCollider(self.col_NodeNP,playerob)
        self.CHP.addInPattern("wall in")
        self.CHP.addOutPattern("wall out")
        self.CHP.addAgainPattern("wall again")
        self.b.cTrav.addCollider(self.col_NodeNP,self.CHP)
        self.event_handler.accept("wall in",self.wall_in)
        self.event_handler.accept("wall out",self.wall_out)
        self.event_handler.accept("wall again",self.wall_again)
def wall_again(self,*args):
        print("wall again")
        print(args)
        for x in args:

            print(x)
        a=1

output

wall again
(render/AvatarArm/sphere into render/Object at 0.471405 5 0,)
CollisionEntry:
  from render/AvatarArm/sphere
  into render/Object [wall]
  at 0.471405 5 0
  normal 0 -1 0
  interior 0.471405 5.1214 0 (depth 0.121405)
  respect_prev_transform = 0