rospy_message_converter

Rospy_message_converter is a lightweight ROS package and Python library to convert from Python dictionaries and JSON messages to rospy messages, and vice versa.

ROS 1 and ROS 2 branches

ROS 1 users should use the master branch. ROS 2 users should use the appropriate branch for their distro (foxy/galactic/humble/rolling/...).

Usage

Convert a dictionary to a ROS message

from rospy_message_converter import message_converter
from std_msgs.msg import String
dictionary = { 'data': 'Howdy' }
message = message_converter.convert_dictionary_to_ros_message('std_msgs/String', dictionary)

Convert a ROS message to a dictionary

from rospy_message_converter import message_converter
from std_msgs.msg import String
message = String(data = 'Howdy')
dictionary = message_converter.convert_ros_message_to_dictionary(message)

Convert JSON to a ROS message

from rospy_message_converter import json_message_converter
from std_msgs.msg import String
json_str = '{"data": "Hello"}'
message = json_message_converter.convert_json_to_ros_message('std_msgs/String', json_str)

Convert a ROS message to JSON

from rospy_message_converter import json_message_converter
from std_msgs.msg import String
message = String(data = 'Hello')
json_str = json_message_converter.convert_ros_message_to_json(message)

Test

To run the tests:

catkin_make test

pre-commit Formatting Checks

This repo has a pre-commit check that runs in CI. You can use this locally and set it up to run automatically before you commit something. To install, use pip:

pip3 install --user pre-commit

To run over all the files in the repo manually:

pre-commit run -a

To run pre-commit automatically before committing in the local repo, install the git hooks:

pre-commit install

License

Project is released under the BSD license.

GitHub actions - Continuous Integration

ROS Buildfarm

	binary deb	source deb	devel	doc
kinetic
melodic
noetic

Change Log

0.5.9 (2022-09-12)

• Fix flake8 errors
• Re-format code using black
• package.xml: Add missing build_export_depend
• Fix EOF and trailing whitespace
• Add pre-commit config
• README: Add note about branches
• pass down log_level to helper functions (#60)
• Declare file encoding This is necessary on ROS Melodic (Python2), because I have added a non-ASCII character (u umlaut) in my last commit.
• Add LICENSE file and license headers
• Contributors: Martin G