How to address 'action' ?

edit

Hello, I'm working on ROS kinetic of Ubuntu 16.04.

I'm trying to test a simple action node, but I've faced a little trouble.

I made my custom action message named test1.action in ~/basic/action directory, in which basic is the name of package includes test1.action

Below is my main node:

#! /usr/bin/env python
import rospy
import time
import actionlib
from basic.msg import test1Action, test1Goal,test1Result, test1Feedback


index = 0.0


def feedback_callback(FEEDBACK):
    global index
    print 'Feedback: ',index
    index += 1


if __name__ == '__main__':
    rospy.init_node('test_action')
    action_server_name = '/test_action_server'

    client = actionlib.SimpleActionClient(action_server_name, test1Action)

    rospy.info('Wait for action server...' + action_server_name)
    client.wait_for_server()
    rospy.info('get action server...' + action_server_name)

    goal = test1Goal()
    goal.goal = 500

    client.send_goal(goal, feedback_cb = feedback_callback)
    rate = roapy.Rate(1)

    rospy.loginfo('start')
    while not client.wait_for_result():
        rospy.info("Doing stuff while waiting for the sersere")
        rate.sleep()

rospy.loginfo('Finish')

And I always get the following error,

ImportError: No module named basic.msg

How can i troubleshoot this kind of error?

Do I have to make msg directory??