ros2/rclpy

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rclpy (ROS Client Library for Python)

Stars: 478
Forks: 298
Open beginner issues: 0
Indexed issues: 131
Avg merge: 2d 19h
Merged PRs (30d): 6

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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131 open issues indexed

MultiThreadedExecutor.shutdown() closes the worker pool while spin() can still submit to it Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

ros2/rclpy#1724 · Opened Sep 18, 2026
AsyncNode deadlocks under load Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1722 · 1 comment · Opened Sep 16, 2026
rclpy service send_response timeout warning occurs intermittently under high-frequency sequential service calls Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ros2/rclpy#1720 · 1 comment · Opened Sep 10, 2026
:farmer: Flaky async node, service, and client tests timing out after 120 seconds Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rclpy#1719 · 2 comments · Opened Sep 8, 2026
Avoid scanning pending requests on service response completion Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

ros2/rclpy#1709 · 1 comment · Opened Aug 13, 2026
Multi-threaded executor with looser bounds Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

ros2/rclpy#1708 · 2 comments · Opened Aug 12, 2026
Documentation for rclpy.node is dead Open

bug

ros2/rclpy#1681 · 1 comment · 1 assignee · Opened Jun 22, 2026
SimpleManagedEntity is very specific Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

ros2/rclpy#1677 · 1 reaction · Opened Jun 3, 2026
parameter_dict_from_yaml_file loads doubles as strings when str() uses exponent notation (e.g. 0.00001, 5e-06, 1e+20) Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

ros2/rclpy#1672 · 2 comments · Opened May 23, 2026
KeyError in ActionServer._execute_goal under goal-timeout abort (race on _result_futures) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rclpy#1667 · Opened May 17, 2026
MultiThreadedExecutor: race in `spin_until_future_complete()` might defer a task exception to next spin Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

ros2/rclpy#1659 · 1 comment · Opened May 2, 2026
`test_executor_immediate_shutdown` flaky failure in CI Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

ros2/rclpy#1648 · Opened Apr 17, 2026
rclpy.shutdown() from callback still deadlocks in Humble Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1646 · 1 comment · 1 reaction · Opened Apr 13, 2026
EventsExecutor segmentation faults due to pub/sub destruction with event_callbacks Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ros2/rclpy#1644 · Opened Apr 8, 2026
:farmer: rclpy time test failing by a `windows access violation` in win-rep Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ros2/rclpy#1638 · Opened Mar 30, 2026
Backport #1150 to Humble Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

ros2/rclpy#1610 · 2 comments · Opened Feb 14, 2026
`parameter_dict_from_yaml_file` should be replace with `rcl_parse_yaml_file` Open

bug

ros2/rclpy#1606 · 6 comments · 1 reaction · 1 assignee · Opened Feb 10, 2026
Exception when awaiting `call_async()` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ros2/rclpy#1588 · 5 comments · Opened Jan 29, 2026
Add ros-args help text Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1587 · 1 comment · Opened Jan 29, 2026
Add to PyPi Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

ros2/rclpy#1586 · Opened Jan 29, 2026
Increase internal Windows timer rates Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rclpy#1565 · 9 comments · Opened Dec 15, 2025
Please add list and map parameter types for ros2 parameters that allow other ros parameter types as their values Open

enhancement more-information-needed

Difficulty 5/5 Over a week Newbie friendliness 35/100

ros2/rclpy#1535 · 2 comments · Opened Oct 29, 2025
🧑‍🌾 `rclpy.rclpy.test.test_events_executor.TestEventsExecutor.test_pub_sub` test failing with subscriber node alone in multiple rmws Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ros2/rclpy#1529 · Opened Oct 17, 2025
🧑‍🌾 Segmentation fault in rclpy `test_client` and `test_service` Open

bug

ros2/rclpy#1508 · 6 comments · 1 assignee · Opened Sep 26, 2025
loading string parameter from a Node parameter file with map value silently fails Open

bug

ros2/rclpy#1507 · 1 comment · 1 assignee · Opened Sep 24, 2025
cannot use Destroyable because destruction was requested Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rclpy#1491 · 1 comment · Opened Aug 13, 2025
RCLPY handles time being set back differently to RCLCPP Open

bug

ros2/rclpy#1490 · 8 comments · 1 assignee · Opened Aug 11, 2025
Cannot shutdown context from callbacks Open

bug help wanted

ros2/rclpy#1489 · 3 comments · 1 reaction · 1 assignee · Opened Aug 9, 2025
Declaring static type paramaters no longer matches rclcpp functionaility and always raises an exception Open

bug

ros2/rclpy#1460 · 4 comments · 3 reactions · 1 assignee · Opened May 15, 2025
Timestamp Jumpback Issue with node.get_clock().now().to_msg() in rclpy Open

bug more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rclpy#1459 · 2 comments · 2 reactions · Opened May 14, 2025
Failed to get number of ready entities for action client: wait set index for status subscription is out of bounds Open

backlog bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1455 · 3 comments · 10 reactions · Opened May 5, 2025
🧑‍🌾 `Fatal Python error: Aborted` in multiple downstream packages Open

bug

ros2/rclpy#1453 · 1 assignee · Opened May 1, 2025
xmlrpc.client.Fault: <Fault 1: "<class 'rclpy._rclpy_pybind11.RCLError'>:Failed to get node names: empty node name returned by the RMW layer Open

bug more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rclpy#1448 · 1 comment · Opened Apr 29, 2025
TransformListener IndexError: wait set index too big Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1438 · 1 comment · Opened Mar 26, 2025
🧑‍🌾 Windows fatal exception: access violation in rclpy tests Open

ros2/rclpy#1406 · 4 comments · 1 assignee · Opened Jan 27, 2025
SystemError `PyCFunction with class but no METH_METHOD` during normal ROS operations Open

more-information-needed

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rclpy#1400 · 2 comments · Opened Jan 15, 2025
:farmer: `rclpy._rclpy_pybind11` not found in Windows Debug Open

ros2/rclpy#1386 · 1 assignee · Opened Dec 10, 2024
Exception occurs when iterating waitables in rclpy executors Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rclpy#1385 · 1 comment · Opened Dec 4, 2024
Wait Set Index Too Big Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rclpy#1381 · 9 comments · 1 reaction · Opened Nov 26, 2024
Callback Groups Leak Memory Open

ros2/rclpy#1356 · 1 reaction · 1 assignee · Opened Sep 12, 2024
Thread-Safety issue in rclpy executor leading to InvalidHandle exception Open

ros2/rclpy#1355 · 2 comments · 6 reactions · 1 assignee · Opened Sep 12, 2024
High-Latency networks: "generator already executing" when calling a service Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1351 · 5 comments · Opened Aug 30, 2024
ROS2 Iron: Action Servers Become Unresponsive After Modifying Collision Checking Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rclpy#1337 · 1 comment · Opened Aug 19, 2024
Flaky `get_node_names_and_namespaces` shows it's own node name but duplicated Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1320 · 2 comments · Opened Jul 25, 2024
Memory leak in ActionServer. ```taken_data = self._handle.take_goal_request``` Open

enhancement

ros2/rclpy#1300 · 8 comments · 1 assignee · Opened Jun 17, 2024
First Time Contributors Documentation (CONTRIBUTING.md) Open

ros2/rclpy#1290 · 2 comments · 1 assignee · Opened May 25, 2024
context.on_shutdown is never called Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1287 · 8 comments · 1 reaction · Opened May 22, 2024
aarch64 cross compiling Open

backlog bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1282 · 9 comments · Opened May 11, 2024
Update the executor to not throw ExternalShutdownException Open

backlog

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1279 · 2 comments · Opened May 7, 2024
Decode ROS2 raw byte data using rclpy.serialization.deserialize_message Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rclpy#1273 · 3 comments · Opened Apr 22, 2024

ros2/rclpy

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