ImportError: No module named waypoint_listener.srv

edit

I'm trying to create a service, but i can't use it in python(didn't tested in C++).

I have the following CMakeList file

cmake_minimum_required(VERSION 2.8.3)
project(waypoint_listener)

## Find catkin macros and libraries
## if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz)
## is used, also find other catkin packages
find_package(catkin REQUIRED COMPONENTS
  rospy
  geometry_msgs
  message_generation
)


## Generate services in the 'srv' folder
 add_service_files(
   FILES
   WaypointServer.srv
#   Service1.srv
#   Service2.srv

 )


## Generate added messages and services with any dependencies listed here
 generate_messages(
   DEPENDENCIES
   geometry_msgs
 )


catkin_package(
 INCLUDE_DIRS
 CATKIN_DEPENDS message_runtime rospy geometry_msgs


)

###########
## Build ##
###########

## Specify additional locations of header files
## Your package locations should be listed before other locations
# include_directories(include)
include_directories(
  ${catkin_INCLUDE_DIRS}
)

in python file i imported the srv file, this way

from waypoint_listener.srv import *

but i'm getting the following error

Traceback (most recent call last):
  File "/home/vitor/catkin_ws/src/viz/waypoint_listener/scripts/waypoints_server.py", line 5, in <module>
    from waypoint_listener.srv import *
ImportError: No module named srv