Pubish custom odometry information for robot_localization

edit

hello everyone. I am trying to publish a new custom odomtery information for robot_localization package. I have a sensor which is giving me a position x and y and i want to use that to locate my robot. Since i want to fuse this odomtery information with robot's wheel odometry information, Other things like Twist can be zero as i will use robot's odometry for that purpose.My sensor is recording the positioning information in a .txt file and i will be reading that values to use. How should i modify things to get ting running.

#!/usr/bin/env python
# license removed for brevity
import rospy
import time
from std_msgs.msg import String
from nav_msgs.msg import Odometry
def odom1():
    global x
    global y
    pub = rospy.Publisher('odom1', Odometry, queue_size=10)
    rospy.init_node('publisher_turtlebot', anonymous=True)
    rate = rospy.Rate(10) # 10hz
    while not rospy.is_shutdown():
        f= open ("x.txt", "r")
        x= f.readlines()
        f1= open ("y.txt", "r")
        y= f1.readlines()
        odom1= Odometry()
        odom1.header.stamp= rospy.Time.now()
        odom1.header.frame_id = "odom"
        odom1.pose.pose.position.x= x
        odom1.pose.pose.position.y= y
        pub.publish(odom1())
        rate.sleep()
if __name__ == '__main__':
    try:
        odom1()
    except rospy.ROSInterruptException:
        pass``

One file read x and other read y. I am getting this error.

Error: Odometry object is not callable.

What should i do? I am using kinetic kame with ubuntu 16.04 and python.