ImportError:No module named my_custom_srv_msg_pkg.srv

Course Support ROS Basics In 5 Days (Python)
1

Hello,
I am facing this issue though i tried all possible solutions available here

image
image906×164 7.52 KB
error1
error1911×255 15.1 KB

2

Hi @meghananr21

Make sure you compiled your messages correctly. Check if you correctly adjusted the package.xml and CMakeLists.txt in you package, to include message building dependencies. Then compile and source again.

3

Hi ,
I tried again by checking package.xml and CMakeLists.txt . I compiled and did source again. But still I am facing the same issue. I am able to see message error2

4

Try deleting the build and devel folder, then recompile. If it doesnt work, pls post your package.xml and CMakeLists.txt code

5

Hi ,
Please find the attachment of package.xml and CMakeLists.txt code

cmake_minimum_required(VERSION 2.8.3)
project(my_custom_srv_msg_pkg)


## Here is where all the packages needed to COMPILE the messages of topics, services and actions go.
## It's only getting its paths, and not really importing them to be used in the compilation.
## It's only for further functions in CMakeLists.txt to be able to find those packages.
## In package.xml you have to state them as build
find_package(catkin REQUIRED COMPONENTS
  std_msgs
  message_generation
)

## Generate services in the 'srv' folder
## In this function will be all the action messages of this package ( in the action folder ) to be compiled.
## You can state that it gets all the actions inside the action directory: DIRECTORY action
## Or just the action messages stated explicitly: FILES my_custom_action.action
## In your case you only need to do one of two things, as you wish.
add_service_files(
  FILES
  MyCustomServiceMessage.srv
)

## Here is where the packages needed for the action messages compilation are imported.
generate_messages(
  DEPENDENCIES
  std_msgs
)

## State here all the packages that will be needed by someone that executes something from your package.
## All the packages stated here must be in the package.xml as exec_depend
catkin_package(
  CATKIN_DEPENDS rospy
)


include_directories(
  ${catkin_INCLUDE_DIRS}
)

The below is the code for Package.xml

<?xml version="1.0"?>

<package format="2">

  <name>my_custom_srv_msg_pkg</name>

  <version>0.0.0</version>

  <description>The my_custom_srv_msg_pkg package</description>

  <maintainer email="user@todo.todo">user</maintainer>

  <license>TODO</license>

  <buildtool_depend>catkin</buildtool_depend>

  <build_depend>rospy</build_depend>

  <build_depend>std_msgs</build_depend>

  <build_depend>message_generation</build_depend>

  <build_export_depend>rospy</build_export_depend>

  <exec_depend>rospy</exec_depend>

  <build_export_depend>std_msgs</build_export_depend>

  <exec_depend>std_msgs</exec_depend>

  <build_export_depend>message_runtime</build_export_depend>

  <exec_depend>message_runtime</exec_depend>

  <export>

  </export>

</package>
6

Hi ,
I got it fixed , I didnt source in another webshell where i was calling service.

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