Float64MultiArray message type does not show up in published topic

edit

I am trying to do a test where I publish an array to a topic /chatter2s. Here is my publisher below:

#!/usr/bin/python3
import rospy
from std_msgs.msg import Float64MultiArray
#Float64MultiArray


def do_it():
    data_to_send = Float64MultiArray()
    rospy.init_node("array_publisher")
    pub=rospy.Publisher("chatters2", Float64MultiArray, queue_size=10)

    data_to_send.data = [1.2354567, 99.7890]
    #ata_to_send.data_offset = 0
    pub.publish(data_to_send)
    rospy.spin()

do_it()

Here is my listener:

#!/usr/bin/python3
import rospy
from std_msgs.msg import Float64MultiArray


def callback(msg):
    rospy.loginfo(msg)

rospy.init_node("array_listener")
rospy.Subscriber("chatters2",Float64MultiArray, callback)
#rospy.sleep(3.0)
rospy.spin()

The problem is, when I run these two codes in their respective terminals, they seem to run but then nothing shows up for the listener, I do a rostopic echo /chatters2 and dont see anything coming out for that either. I check the rqt_graph and I see both nodes as well as the chatter topic, so these nodes seem to be active. whats going on?