help with simple /map publisher that will not publish - python

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How do I publish this test data to the /map topic. I would like to use this routine to test other things I'm working on. I think I'm doing it right but when I type 'rostopic echo /map' I see nothing. If I run the script at the command prompt after typing 'roscore' in another terminal I see the test OccupancyGrid on the screen. I don't know what I'm doing wrong.

#!/usr/bin/env python

import rospy
import sys


from nav_msgs.msg import *
from std_msgs.msg import *

def map_stuff():
    rospy.init_node('turtlebot_map', anonymous=True)
    if not rospy.is_shutdown():
        create_map()
        rospy.spin()

def create_map( ):
    test_map = OccupancyGrid()
    test_map.info.resolution = 1.0 
    test_map.info.width = 10
    test_map.info.height = 10
    test_map.info.origin.position.x = 0.0 
    test_map.info.origin.position.y = 1.0 
    test_map.info.origin.position.z = 2.0 
    test_map.info.origin.orientation.x = 3.0 
    test_map.info.origin.orientation.y = 4.0 
    test_map.info.origin.orientation.z = 5.0 
    test_map.info.origin.orientation.w = 6.0 
    test_map.data = []
    for i in range(0, 100):
        test_map.data.append(i)
    print test_map
    map_pub = rospy.Publisher('/map', OccupancyGrid)
    map_pub.publish(test_map);
    return 

if __name__ == '__main__':
    try:
        map_stuff()
    except rospy.ROSInterruptException:
        pass

I followed online tutorials as closely as I could. Any help would be appreciated.