rclpy

Title	Answered?	Asker	Created	Updated
ROS2 python node randomly shuts down	False	Gintecc	2021-12-22 21:48:14	2021-12-22 21:48:14
[ROS2, rclpy] sharing global var between nodes	False	farshid	2022-01-31 01:39:57	2022-02-05 00:44:54
What is the purpose of rclpy.spin_until_future_complete?	False	lexi	2023-07-13 18:01:27	2023-07-13 18:01:27
ROS2: How to get the sender of a message?	False	tompe17	2022-04-04 09:19:14	2022-04-04 09:19:14
rclpy - call publisher's publish method when data in queue is available	False	Fevi	2019-12-26 00:05:08	2019-12-27 05:11:07
Setting timers with different clock sources (wall and simulation) in the same node	False	tianyilim	2022-06-10 14:09:34	2022-06-10 14:09:34
Help me understand ros2 execution model	False	Piachnp	2022-09-02 22:07:04	2022-09-02 22:07:04
Use callback groups to allow an Action to trigger a service of the same Node	False	CraigH92	2021-03-08 15:31:39	2021-03-08 15:31:39
Convert Header Timestamp to nanosecond Python ROS2 Foxy	False	vanguard478	2022-09-30 12:47:28	2022-09-30 12:50:46
Optional list of strings as launch argument in python	False	Dben	2022-10-20 16:08:28	2022-10-20 16:19:04
Can we change ROS2 message timestamp?? Using rclpy	False	cghale12@gmail.com	2020-07-31 07:40:39	2020-07-31 07:40:39
[ROS2] Is it possible to use more than one executor in a single node?	False	oferbar	2022-11-22 08:50:57	2022-11-22 08:50:57
Cannot use empty lists as default value for parameters using rclpy	False	jdayboll	2022-12-14 17:03:58	2022-12-14 17:03:58
ROS2 Foxy: rclpy: failure when importing rclpy.node	False	Hector.Liu	2022-12-25 14:31:24	2022-12-25 14:31:24
How to implement a rclpy node which continuously reads data from a driver library and publishes messages using that data	False	abcampbellb	2023-02-07 19:59:24	2023-02-07 20:07:18
Shutting down gracefully in RCLPy	False	Per Edwardsson	2023-02-15 09:58:29	2023-02-15 09:58:29
DvD bounce animation with Turtlesim node	False	Royce	2023-03-03 15:35:05	2023-03-03 15:35:05
ros2 rclpy: Get client to request a message from a server	False	CraigH92	2020-05-21 14:01:10	2020-05-21 14:01:10
Python bindings for Rviz on ROS2?	False	translunarinjection	2023-04-16 13:25:29	2023-04-16 13:25:29
source ros2 within a python script	False	fury.nerd	2023-05-10 02:49:47	2023-05-10 02:49:47
Install humble from source: Problem rclpy and pybind11	False	andy522	2023-05-17 09:13:09	2023-05-17 09:13:09
[ROS2] Action client to control nav2 crashes after a while	False	charlie92	2021-06-21 22:54:34	2021-06-22 17:11:36
[ROS2 Python] How to log from nested class?	False	Fubbis	2023-06-15 10:48:47	2023-06-15 10:48:47
Using while loop with rclpy.ok() gives unexpected result	False	LeibTon	2023-07-13 11:55:56	2023-07-13 11:55:56
What is the purpose of rclpy.spin_until_future_complete?	False	lexi	2023-07-13 18:01:30	2023-07-13 18:01:30
ROS2 managed Python node: exception stacktrace is not logged	False	LastStarDust	2023-07-19 10:41:09	2023-07-19 10:41:45
TabError: inconsistent use of tabs and spaces in indentation	False	r_gerson	2022-06-14 21:31:40	2022-06-14 21:39:13
Can I create an executor task in different callback group with rclpy?	False	dcconner	2023-08-03 18:37:27	2023-08-03 18:57:58
[ROS2] Calling a service repeatedly from a subscriber callback	False	andrew_103	2021-04-08 00:53:45	2021-04-08 00:53:45
rclpy.spin_until_future_complete() removes node from executor added by rclpy.spin()	False	bjoernolav	2022-03-31 15:18:43	2022-03-31 15:18:43
Explanation to ROS2 python library	False	aakash_sehgal	2018-06-08 16:08:52	2018-06-08 16:08:52
Using the rclpy API	False	aakash_sehgal	2018-06-11 12:14:36	2018-06-11 12:14:36
eprosima::fastcdr::exception::NotEnoughMemoryException with rclpy.ActionClient	False	David Lu	2021-05-14 20:56:53	2021-05-14 20:56:53
Want to launch another launch file when the first launch file is closed	False	hydro	2023-06-01 14:39:16	2023-06-01 14:39:16
rclpy import in application fails	False	bhmth	2018-10-23 09:42:53	2018-10-25 12:20:47
rclpy import error tutorial	False	Felipe	2019-01-14 14:33:03	2019-01-14 20:11:12
ROS2 Python lifecycle node timeline	False	guggenhemj	2019-10-28 15:20:39	2019-10-28 19:22:25
Problem combining ROS2 Action and Tkinter GUI	False	brownbrowny	2022-06-17 09:22:39	2023-04-27 19:27:57
ROS2 Galactic rclpy.parameter.Parameter missing floating_point_range and integer_range no longer availabe	False	lora	2021-11-09 14:11:53	2021-11-09 14:11:53
Trying to run rclpy.spin() in thread produces "generator already executing"	False	Raja1969	2019-11-20 04:39:48	2019-11-20 04:43:03
How to specify a default logger in non-node classes with Python types in VSCode?	False	thibd	2022-07-19 19:35:22	2022-07-22 08:17:18
ROS2: callback queue priorities	False	heumchri	2019-08-19 16:56:43	2019-08-19 16:56:43
How to use (python) virtual environments with ROS2?	False	jeferrandiz	2021-02-04 22:19:47	2021-02-04 22:19:47
[ROS2] rclpy action client freeze	False	souphis	2019-07-31 06:19:12	2019-07-31 06:19:12
Should I git ignore .eggs directory?	False	future731	2019-12-27 14:39:54	2019-12-27 14:39:54
[ROS2][rclpy][Publisher] publish a msg to an existing topic	False	lin404	2020-01-16 08:23:58	2020-01-16 23:54:21
ROS2 Actions publish status messages that get exponentially more expensive	False	CraigH100	2022-09-21 13:22:56	2022-09-21 13:22:56
How can I make ROS2 launch quit on node crash?	False	allezxandre	2020-02-10 15:11:09	2020-02-11 00:48:15
[ROS2][rclpy] Load parameters from file does not work when using namespaces	False	S. Hoose	2020-03-24 14:33:32	2020-03-24 14:42:00
ROS2: Set parameters of other nodes	False	ninamwa	2020-01-23 15:30:50	2020-01-23 15:30:49
ROS2 serious memory leak when using timer?	False	ahlyder	2019-04-11 07:39:21	2019-04-11 07:39:21
ros2 rclpy Parameters are not being passed from launch file / yaml into Node	False	CraigH92	2020-05-20 10:45:13	2020-05-20 10:52:53
Why should we use destroy_node() for Python nodes in ROS2?	False	renarded	2020-06-04 13:18:10	2020-06-04 13:18:10
ROS2 image publish rclpy taking 25ms	False	Malz	2020-07-29 20:31:26	2020-07-30 03:09:00
Iterate between different action servers, until accept goal response is received	False	adry	2020-12-06 15:52:33	2020-12-06 15:52:33
Can a Node cross DDS Domains? And can I host a service on one domain, and call a service (with the same name) on another?	False	CraigH92	2020-12-23 17:04:16	2020-12-24 11:47:03
stalls and fails when spinning up many servers with launch	False	masynthetic	2021-06-24 01:21:14	2021-06-24 01:26:59
rclpy BufferClient strange timeout on lookup_transform	False	charlie92	2021-07-07 20:22:16	2021-07-07 20:22:16
Import rclpy in a capsuled python environment	False	TheBee	2021-07-28 12:09:29	2021-07-28 12:09:29
ros2 python odometry	False	Sarwan	2021-08-05 08:44:22	2021-08-05 08:44:22
how to make service "not ready" while it is processing a request?	False	masynthetic	2021-08-12 07:42:25	2021-08-12 07:42:25
ROS2 Python single parameter callback	False	TonySpark	2021-10-08 16:56:37	2021-10-08 16:56:37
How to use a ros2 service to trigger an asyncio non-blocking function (without Actions)	False	CraigH92	2020-11-27 10:11:09	2020-11-27 10:11:09
How to use Marker package in ROS2 with Python?	False	jasr	2021-11-11 03:59:58	2021-11-11 03:59:58
Is it possible to use IPC shared memory with python? [galactic ROS2]	False	lora	2021-11-22 18:50:34	2021-11-22 18:50:34

Title	Answers	Answered?	Asker	Created	Updated
How to convert a Pose to PyKDL Frame in python (and vice versa)	1	False	anton.deguet	2022-01-07 20:18:02	2022-01-07 22:36:57
RCLPY Managed Nodes for Foxy	1	False	CraigH100	2022-03-22 10:50:24	2022-03-22 18:36:19
How to get ROS2 parameter hosted by another Node	1	False	mequi	2019-12-23 17:58:57	2020-01-25 11:28:28
AssertionError: The 'time_from_start' field must be a sub message of type 'Duration'	1	False	Icon45	2023-05-29 08:24:49	2023-05-29 19:42:45
New publisher discovered on topic 'zed/right/image_rect_color', offering incompatible QoS. No messages will be received from it. Last incompatible policy: RELIABILITY	1	False	KhalidOwlWalid	2022-01-16 21:51:42	2022-01-18 19:16:35
rclpy fails to run on arm64 after cross-compilation	1	False	dlinn	2019-07-23 21:40:32	2020-02-26 08:31:09
import rclpy error invalid syntax	1	False	flynneva	2019-07-28 18:37:27	2019-07-30 00:54:23
[ROS2][rclpy] subscribe to topic message only once	1	False	buran5884	2022-09-13 10:44:03	2022-09-14 10:57:11
ModuleNotFoundError: No module named 'rclpy._rclpy_pybind11'	1	False	ever	2022-09-28 01:30:47	2022-09-28 13:24:20
rclpy action server seems slowing down and consuming memory in long term	1	False	longjie0723	2023-01-15 02:26:22	2023-01-23 00:24:16
Callback queue and executor shutdown	1	False	askuih	2023-03-07 13:05:39	2023-03-21 11:45:58
How to create Streaming Qos Profile for publisher in Python ROS2	1	False	Flash	2021-03-25 15:30:40	2021-03-31 17:34:08
Understanding ROS 2 publisher size, subscriber size, and topic size	1	False	choton	2023-04-14 13:13:15	2023-04-14 16:44:35
rclpy.action.ActionServer callback 'goal_handle' type	1	False	Erel	2023-05-23 07:14:51	2023-05-23 08:18:27
where to suggest ideas	1	False	Interpause	2022-07-28 00:52:18	2022-08-01 09:06:36
LifecycleNode / ManagedNode in rclpy?	1	False	CraigH92	2020-06-04 15:28:05	2022-11-03 16:35:37
Error Using rclpy module on a non ROS2 machine	1	False	vishal_rawat	2018-06-10 16:30:25	2018-08-13 02:02:32
ros2 external	1	False	Faraz Khan	2018-06-12 19:19:05	2018-06-13 00:45:17
Difference in build between ament build and ament build --symlink install	1	False	aakash_sehgal	2018-07-03 12:42:50	2018-07-04 15:58:23
how do I install rclpy on an arm processor with ros2?	3	False	LiamNelson	2018-08-07 16:16:59	2018-09-06 02:54:28
ROS2 Python: Add arguments to callback	1	False	ninamwa	2020-03-16 13:05:40	2020-03-16 16:58:19
ROS2 Python Migration Guide	2	False	David Lu	2018-10-17 19:14:16	2018-10-18 03:17:01
ROS2 - rclpy set parameter example?	1	False	mkhansen	2018-11-15 00:31:17	2018-11-15 14:37:11
[ROS2] ModuleNotFoundError: No module named 'tf2_ros'	1	False	beck	2018-12-04 01:57:53	2019-12-13 10:30:14
How to add queue size in rclpy.create_publisher	1	False	Gabbar	2019-02-18 12:00:36	2019-02-20 00:01:44
Retrieving parameters from nodes (rclpy)	1	False	Raskkii	2019-03-07 15:00:02	2019-03-15 20:59:42
python rosmsg/rospack in ROS2	2	False	federico.ferri	2019-04-14 11:03:38	2020-06-05 14:33:54
Fastest way of publishing large ndarray image data as string message on ros2 rclpy	1	False	John Doenut	2019-05-21 00:37:32	2019-05-21 12:55:16
Communication between rclpy client and rlcpp server	1	False	asmartbaby	2022-07-20 21:25:31	2022-07-26 17:56:10
Close a node from inside Node class	1	False	hect1995	2019-07-31 09:03:29	2019-07-31 11:22:15
[ROS2] How do I pass argument to launch + node or node directly	1	False	Kalmah	2022-07-18 23:24:33	2022-07-23 13:15:50
[ROS2][RViz2] can't compare times with different time sources	1	False	xbaelus	2019-11-18 12:17:40	2019-11-19 22:44:41
[ROS2] rclpy Executor spin_some alternative/support	1	False	DreamEquation	2019-12-17 08:53:47	2019-12-17 21:28:03
transform pose in tf2	1	False	intelharsh	2020-02-13 15:20:08	2020-05-19 10:08:02
Matplotlib dynamic plot in ROS2 callback	1	False	kishorkumar	2020-03-13 04:32:15	2020-07-10 14:31:25
Compose two components into a single process in python	1	False	CraigH92	2020-05-05 10:03:35	2020-05-05 13:25:28
How can I kill a ros2 node with rclpy?	1	False	FlyingChickenGang	2021-09-16 11:42:40	2021-09-19 15:50:38
ROS2 : ModuleNotFoundError: No module named rclpy._rclpy.	1	False	BadrMt	2020-06-16 17:32:15	2020-06-18 16:00:21
What release/distribution of ROS2 supported by ROS2-web-bridge?	1	False	Aqil	2020-07-29 14:02:41	2021-09-11 13:29:13
ROS2 action goal canceling problem	2	False	10908234	2020-09-16 05:39:59	2022-06-03 08:53:56
Why is the Future 'done callback' order reversed?	1	False	SmallJoeMan	2020-12-09 08:46:51	2020-12-18 19:25:02
Including a Python module in a ROS2 package	3	False	edesta	2020-12-15 19:19:26	2022-09-18 09:15:27
rclpy.Subscription getting the number of connections	1	False	Pablo Inigo Blasco	2021-03-10 18:03:54	2021-03-24 19:43:37
Fail building rclpy from source	1	False	ksato-dev	2021-01-06 08:44:48	2021-01-06 16:56:08
Connect native python loggers to ros2 logging	1	False	nealtanner	2021-10-05 20:11:16	2021-11-22 00:05:50
why does rclpy timer have no update method and stored in ns?	1	False	masynthetic	2021-12-16 22:20:07	2021-12-18 20:48:12

Title	Answers	Answered?	Asker	Created	Updated
Why do I get deadlock when setting a future in a subscription callback? (Only with MultiThreadedExecutor) (rclpy)	1	True	CraigH92	2020-06-19 14:16:21	2023-02-17 14:44:05
ROS2 Performance: rclpy is 30x-100x slower than rclcpp	1	True	Karl	2021-04-09 17:08:36	2021-11-12 09:14:49
Is there an equivalent of rospy.wait_for_message in ros2?	1	True	Edvard	2022-11-10 08:20:38	2022-11-18 01:27:19
Handling long actions in rclpy (with cancellation)	1	True	clyde	2022-11-17 23:27:11	2022-11-19 14:44:25
[ROS2] asyncio await with timeout a service call in a callback	2	True	charlie92	2023-03-16 23:08:34	2023-03-17 23:18:25
Setting endpoints in Pub/Sub in rclpy ROS2	1	True	vishal_rawat	2018-06-10 11:52:50	2018-06-10 11:56:13
ROS2 : How to call a service from the callback function of a subscriber ?	3	True	Marc Testier	2018-08-30 09:38:04	2020-05-18 10:56:35
dll not found error when running ROS2 examples, any node, publish from command line on Windows 10	1	True	Marcel Usai	2018-08-31 12:46:30	2018-09-10 14:19:04
ROS2 Custom Messages Not Found	1	True	beck	2018-10-24 00:12:40	2018-10-25 16:35:25
ROS2 Package using both C++ and Python	2	True	beck	2018-11-26 20:38:07	2018-12-03 12:14:38
Rate and sleep function in RCLPY library for ROS2	2	True	skyhigh2000	2020-07-30 09:07:48	2021-06-26 16:44:14
Do we require a ROS2 installation to use rclpy ?	1	True	vishal_rawat	2018-06-12 07:54:48	2018-06-12 07:57:25
TransformListener x10 higher CPU load in rclpy than rclpp	1	True	charlie92	2021-06-29 16:57:54	2021-06-29 18:59:43
[ROS2] Wait for action using rclpy	1	True	souphis	2019-05-09 14:00:19	2019-06-05 19:49:16
ros2 rclpy list parameters from node	1	True	Artivis	2019-06-28 18:30:24	2019-07-04 17:21:07
Launching and killing nodes within a Python node in ROS 2 Foxy	2	True	siliconlad	2020-09-07 20:40:35	2021-11-15 02:19:12
Can't receive data in python node	2	True	madmax	2019-09-03 07:31:06	2020-11-19 05:02:03
Issues Building ROS2: Dashing Python Package	1	True	SouLeo	2019-09-06 15:49:34	2019-09-06 16:03:56
Colcon builds and tests python package, but ros2 does not find it after sourcing install\local_setup.bat	0	False	hazevedosa	2019-09-10 16:02:56	2019-09-10 16:02:56
ROS2 always starts wrong node rclpy	1	True	LeoE	2019-11-11 22:23:43	2019-11-11 22:48:05
[ROS2][rclpy] how to set parameter hosted by another Node via service	1	True	lin404	2020-02-05 07:09:44	2020-02-06 00:15:42
Best way to save ROS 2 topic messages to text file in Python callback?	1	True	peterpolidoro	2020-02-05 12:33:05	2020-02-05 15:16:09
[ROS2] creating integration tests for python nodes	2	True	millerluki	2020-07-01 09:28:15	2021-07-25 17:09:19
rclpy: Change the output format of the default logger (RcutilsLogger)	1	True	CraigH92	2020-11-13 11:13:26	2020-11-13 12:42:15
Publishing CV2 image message in ROS2 rclpy	1	True	John Doenut	2019-05-19 21:05:40	2019-05-20 16:12:29
import rclpy without sourcing setup.bash	2	True	highmax1234	2021-04-07 14:19:45	2021-07-02 09:31:33
Spinning multiple nodes across multiple threads	1	True	Chuck Claunch	2021-05-06 16:14:41	2021-05-06 19:24:40
Service call from python hangs	1	True	ALNA_Perera	2023-04-05 06:23:20	2023-04-05 14:22:36
[ROS2] ros2 command stucks without exit	1	True	millerluki	2021-09-28 09:05:27	2021-09-28 11:11:19
ROS2: What is the purpose of a guard condition?	1	True	Per Edwardsson	2021-10-27 07:10:43	2023-03-15 14:34:20
Help me understand ros2 execution model	1	True	Piachnp	2022-09-02 22:09:14	2022-09-06 17:28:24

Questions with no answers: 65    [expand/collapse]

Questions with no accepted answers: 46    [expand/collapse]

Closed Questions: 31    [expand/collapse]

Users

Name	Asked	Answered	Accepted
Anonymous	0	92	30
Faraz Khan	1	0	0
fury.nerd	1	0	0
andrew_103	1	0	0
jasr	1	0	0
Icon45	1	0	0
charlie92	4	0	0
David Lu	2	0	0
BadrMt	1	0	0
millerluki	2	0	0
guggenhemj	1	0	0
LeoE	1	0	0
Felipe	1	0	0
peterpolidoro	1	0	0
ksato-dev	1	0	0
highmax1234	1	0	0
vanguard478	1	0	0
longjie0723	1	0	0
Gabbar	1	0	0
hydro	1	0	0
translunarinjection	1	0	0
Flash	1	0	0
S. Hoose	1	0	0
anton.deguet	1	0	0
intelharsh	1	0	0
Interpause	1	0	0
choton	1	0	0
mkhansen	1	0	0
r_gerson	1	0	0
xbaelus	1	0	0
Piachnp	2	0	0
lexi	2	0	0
10908234	1	0	0
Kalmah	1	0	0
edesta	1	0	0
Chuck Claunch	1	0	0
cghale12@gmail.com	1	0	0
DreamEquation	1	0	0
CraigH92	9	0	0
SmallJoeMan	1	0	0
John Doenut	2	0	0
kishorkumar	1	0	0
KhalidOwlWalid	1	0	0
Fubbis	1	0	0
mequi	1	0	0
LastStarDust	1	0	0
masynthetic	3	0	0
Edvard	1	0	0
Karl	1	0	0
souphis	2	0	0
siliconlad	1	0	0
Artivis	1	0	0
clyde	1	0	0
federico.ferri	1	0	0
nealtanner	1	0	0
bhmth	1	0	0
TonySpark	1	0	0
SouLeo	1	0	0
Aqil	1	0	0
abcampbellb	1	0	0
beck	3	0	0
adry	1	0	0
Royce	1	0	0
skyhigh2000	1	0	0
ninamwa	2	0	0
flynneva	1	0	0
Erel	1	0	0
dcconner	1	0	0
Marc Testier	1	0	0
Malz	1	0	0
Fevi	1	0	0
bjoernolav	1	0	0
Sarwan	1	0	0
farshid	1	0	0
buran5884	1	0	0
Dben	1	0	0
ahlyder	1	0	0
oferbar	1	0	0
asmartbaby	1	0	0
Pablo Inigo Blasco	1	0	0
future731	1	0	0
lin404	2	0	0
FlyingChickenGang	1	0	0
lora	2	0	0
Hector.Liu	1	0	0
jeferrandiz	1	0	0
CraigH100	2	0	0
brownbrowny	1	0	0
ever	1	0	0
tianyilim	1	0	0
Raja1969	1	0	0
aakash_sehgal	3	0	0
LiamNelson	1	0	0
Raskkii	1	0	0
heumchri	1	0	0
jdayboll	1	0	0
Gintecc	1	0	0
renarded	1	0	0
dlinn	1	0	0
TheBee	1	0	0
vishal_rawat	3	0	0
tompe17	1	0	0
askuih	1	0	0
madmax	1	0	0
andy522	1	0	0
hect1995	1	0	0
LeibTon	1	0	0
thibd	1	0	0
hazevedosa	1	0	0
ALNA_Perera	1	0	0
allezxandre	1	0	0
Marcel Usai	1	0	0
Per Edwardsson	2	0	0