I think this error occurs because of your settings.json which is generated from vscode extention. Check my settings.json and modify your settings.json for your ROS env. (By the way, you can find settings.json on .vscode folder)

{
"python.autoComplete.extraPaths": [
    "/opt/ros/humble/lib/python3.10/site-packages",
    "/opt/ros/humble/local/lib/python3.10/dist-packages",
    "/usr/lib/python3.10/",
],
"python.analysis.extraPaths": [
    "/opt/ros/humble/lib/python3.10/site-packages",
    "/opt/ros/humble/local/lib/python3.10/dist-packages",
    "/usr/lib/python3.10",
],
"files.associations": {
    "unordered_map": "cpp",
    "unordered_set": "cpp",
    "cctype": "cpp",
    "clocale": "cpp",
    "cmath": "cpp",
    "csignal": "cpp",
    "cstdarg": "cpp",
    "cstddef": "cpp",
    "cstdio": "cpp",
    "cstdlib": "cpp",
    "cstring": "cpp",
    "ctime": "cpp",
    "cwchar": "cpp",
    "cwctype": "cpp",
    "array": "cpp",
    "atomic": "cpp",
    "strstream": "cpp",
    "*.tcc": "cpp",
    "bitset": "cpp",
    "chrono": "cpp",
    "codecvt": "cpp",
    "complex": "cpp",
    "condition_variable": "cpp",
    "cstdint": "cpp",
    "deque": "cpp",
    "forward_list": "cpp",
    "list": "cpp",
    "vector": "cpp",
    "exception": "cpp",
    "algorithm": "cpp",
    "functional": "cpp",
    "iterator": "cpp",
    "map": "cpp",
    "memory": "cpp",
    "memory_resource": "cpp",
    "numeric": "cpp",
    "optional": "cpp",
    "random": "cpp",
    "ratio": "cpp",
    "set": "cpp",
    "string": "cpp",
    "string_view": "cpp",
    "system_error": "cpp",
    "tuple": "cpp",
    "type_traits": "cpp",
    "utility": "cpp",
    "hash_map": "cpp",
    "hash_set": "cpp",
    "fstream": "cpp",
    "future": "cpp",
    "initializer_list": "cpp",
    "iomanip": "cpp",
    "iosfwd": "cpp",
    "iostream": "cpp",
    "istream": "cpp",
    "limits": "cpp",
    "mutex": "cpp",
    "new": "cpp",
    "ostream": "cpp",
    "shared_mutex": "cpp",
    "sstream": "cpp",
    "stdexcept": "cpp",
    "streambuf": "cpp",
    "thread": "cpp",
    "cfenv": "cpp",
    "cinttypes": "cpp",
    "typeindex": "cpp",
    "typeinfo": "cpp",
    "variant": "cpp",
    "bit": "cpp",
    "geometry": "cpp",
    "*.ipp": "cpp"
}

}

Answer from furkansariyildiz on Stack Exchange
Top answer
1 of 2
1

I think this error occurs because of your settings.json which is generated from vscode extention. Check my settings.json and modify your settings.json for your ROS env. (By the way, you can find settings.json on .vscode folder)

{
"python.autoComplete.extraPaths": [
    "/opt/ros/humble/lib/python3.10/site-packages",
    "/opt/ros/humble/local/lib/python3.10/dist-packages",
    "/usr/lib/python3.10/",
],
"python.analysis.extraPaths": [
    "/opt/ros/humble/lib/python3.10/site-packages",
    "/opt/ros/humble/local/lib/python3.10/dist-packages",
    "/usr/lib/python3.10",
],
"files.associations": {
    "unordered_map": "cpp",
    "unordered_set": "cpp",
    "cctype": "cpp",
    "clocale": "cpp",
    "cmath": "cpp",
    "csignal": "cpp",
    "cstdarg": "cpp",
    "cstddef": "cpp",
    "cstdio": "cpp",
    "cstdlib": "cpp",
    "cstring": "cpp",
    "ctime": "cpp",
    "cwchar": "cpp",
    "cwctype": "cpp",
    "array": "cpp",
    "atomic": "cpp",
    "strstream": "cpp",
    "*.tcc": "cpp",
    "bitset": "cpp",
    "chrono": "cpp",
    "codecvt": "cpp",
    "complex": "cpp",
    "condition_variable": "cpp",
    "cstdint": "cpp",
    "deque": "cpp",
    "forward_list": "cpp",
    "list": "cpp",
    "vector": "cpp",
    "exception": "cpp",
    "algorithm": "cpp",
    "functional": "cpp",
    "iterator": "cpp",
    "map": "cpp",
    "memory": "cpp",
    "memory_resource": "cpp",
    "numeric": "cpp",
    "optional": "cpp",
    "random": "cpp",
    "ratio": "cpp",
    "set": "cpp",
    "string": "cpp",
    "string_view": "cpp",
    "system_error": "cpp",
    "tuple": "cpp",
    "type_traits": "cpp",
    "utility": "cpp",
    "hash_map": "cpp",
    "hash_set": "cpp",
    "fstream": "cpp",
    "future": "cpp",
    "initializer_list": "cpp",
    "iomanip": "cpp",
    "iosfwd": "cpp",
    "iostream": "cpp",
    "istream": "cpp",
    "limits": "cpp",
    "mutex": "cpp",
    "new": "cpp",
    "ostream": "cpp",
    "shared_mutex": "cpp",
    "sstream": "cpp",
    "stdexcept": "cpp",
    "streambuf": "cpp",
    "thread": "cpp",
    "cfenv": "cpp",
    "cinttypes": "cpp",
    "typeindex": "cpp",
    "typeinfo": "cpp",
    "variant": "cpp",
    "bit": "cpp",
    "geometry": "cpp",
    "*.ipp": "cpp"
}

}

2 of 2
0

Navkaran, you said you were learning ros2 with docker, and havent had issues

I faced the same exact issue line for line, so I'm wondering what tutorials you used to start using ros2 with docker?

🌐
Reddit
reddit.com › r/ros › import “rospy” is not accessed pylance error
r/ROS on Reddit: Import “rospy” is not accessed Pylance Error
June 25, 2022 -

Hi Folks,

I have hit a bit of a silly issue here which the solution is eluding me.

I have built a workspace using “colcon” and within the src folder i have created a package using the following command.
ros2 pkg create Data_Stream --dependencies rospy --build-type ament_python

I then run VSCode within the package folder. Now when i import rospy it tells me the following error, “rospy” is not accessed Pylance.
VSCODE Extensions

  • Pylance

  • Python

  • CMake

  • ROS
    Now i have checked my json file and it does have the correct paths but i could be wrong.

{
“python.autoComplete.extraPaths”: [
“/home/user1/dev_sb/install/Data_Stream/lib/python3.8/site-packages”,
“/opt/ros/foxy/lib/python3.8/site-packages”
],
“python.analysis.extraPaths”: [
“/home/user1/dev_sb/install/Data_Stream/lib/python3.8/site-packages”,
“/opt/ros/foxy/lib/python3.8/site-packages”
]
}

I have also tested this with another test.py file at the very top level of the workspace and same result.

I know i have missed something simple so any help would be great!

Thanks!

🌐
Stack Exchange
robotics.stackexchange.com › questions › 113056 › cant-import-rclpy
colcon - cant import rclpy - Robotics Stack Exchange
$\begingroup$ the issue wasn't that, it was the python interpreter i was able to run it perfectly in terminal because ubuntu noble uses python 3.12.3 , but vscode uses 3.11.9 any way to change the interpreter of vscode? ive tried setting the interpreter path to /usr/bin/python3 and /usr/bin/python3.12 , but these arent valid interpreter paths.
Top answer
1 of 7
73

The issue was indeed with Pylance. It was missing an "additional path" to where pip had installed the projects I wanted to import. To solve the issue:

First make sure you know the location of your import; you can find it with:

$ python
>>> import modulename
>>> print(modulename.__file__)

Then, once you know the location:

  1. Open settings (ctrl + ,)
  2. Search "pylance" or find it under "Extensions > Pylance"
  3. Find the "Extra Paths" config item
  4. Use "add item" to a add a path to the parent folder of the module. It will not do any recursive tree searching

And you should be good to go!

For a further example, you can see the image above where I had added the path /home/seph/.local/lib/python2.7/ to no avail. Updating it to /home/seph/.local/lib/python2.7/site-packages/ did the trick.

2 of 7
24

I had a similar problem in my setup as I create a virtual environment per project and install Jupyter there. Instead of a global setting change in the Pylance extension, I rather prefer to follow what states its troubleshooting guide.

Suppose your virtual environment is called venv and it is inside your project folder:

  • Create a folder called .vscode at the root of your project folder, if it does not already exist. Don't forget the dot in front of the name.
  • Create or edit the file .vscode/settings.json and include this tag:
{
    "python.analysis.extraPaths": ["./venv"]
}
  • Note that the path to your virtual environment is relative to the root project folder, not the folder containing the settings.json file.

I hope this helps.

Top answer
1 of 5
2

Hello the solution I found came from this site

https://cps.unileoben.ac.at/how-to-setup-ros2-in-pycharm/

in case later on it gets removed here is the text:

How to setup ROS2 in PyCharm image_pdfimage_print Basic Usage of ROS2 with PyCharm

To access code completion and syntax error handling (debugging doesn’t work in PyCharm directly) in PyCharm for ROS2 the paths have to be linked in your project structure. To do so the following steps have to be performed:

Go to Settings -> Project: -> Project Structure and Click on Add Content Root. Now add the two directories: /opt/ros//lib//site-packages and /opt/ros//local/lib//dist-packages and set them to Resources

Now the code completion and syntax error handling works for ROS2. Custom Messages & Custom Packages

To resolve import errors and add code completion in PyCharm for ROS2 projects you have to further set some directories as source roots.

First for custom messages (now called interfaces) build your project once with colcon build. Then go to install -> -> local -> lib -> -> dist-packages and mark this folder as Source with the right click drop down menue.

For custom packages you go to install -> -> lib -> -> site-packages and mark this as Source with the right click drop down menue.

Don’t forget the build your project with colcon build if you change your custom packages/modules so the code is updated in the install directory. Custom Packages and setup.py

To use custom packages in your ROS2 nodes you need to link them in your setup.py file of your ROS2 package. To do so all packages need to have a init.py file depending on your package this file is in general empty. Then you open the setup.py file and add all your packages to the list “packages”. The list should look like this:

packages = [package_name, package_name + ‘/Your_Package’, package_name+’/Your_2nd_Package’],

but also after this you have to include the correct environment variables in the configuration you are about to run in pycharm. to do this open Run > Edit Configurations... and then get the current ones from your machine by running in terminal (linux) $ printenv | grep 'ros|ROS' on other operating systems you can find them similarly and get those that have either ros or ROS in the name

2 of 5
0

So I myself found a answer just to import the rclpy module inside pycharm. The real problem here is that the interpreter in pycharm doesn't look for the ros2 modules automatically so we need to add them manually. Here are the steps to add the paths of module to make the interpreter look for it.

step 1 : Go to file > settings > python Interpreter > show all

step 2 : click on the icon with small size folders next to the filter icon 'the icon next to filter icon'

step 3 : include the paths mentioned below using the plus symbol.

/opt/ros/<distro>/bin
/opt/ros/<distro>/local/lib/python3.10/dist-packages
/opt/ros/<distro>/lib/python3.10/site-packages
/opt/ros/<distro>/lib

Reference Image for Paths

my distro is ROS2 HUMBLE, the python version depends on what python version that you are using.

step 4 : press ok and restart the Pycharm IDE

I'm still facing a error ImportError: librcl_action.so: cannot open shared object file: No such file or directory

will update this thread when I found a solution. Also refer this github page for further information github thread

UPDATE REGARDING THAT ERROR MENTIONED ABOVE:

As said before I was having problems with IDEs not recognising the rclpy library of ROS2. As by the comment yesterday I mentioned how I solved the problem by adding the interpreter paths in Pycharm IDE. The Pycharm IDE tries to run the file inside the IDE or something like that and received the same error as the title of this thread. Today I tried the code with visual studio code, surprisingly VS code recognised that rclpy library and showed all the auto complete and other things of that library. Since VS code runs every file in terminal inside the IDE, so the code works without any issues. I think this might fix your problem with that error?

🌐
3D Slicer
discourse.slicer.org › support
Import rclpy in scripted module - Support - 3D Slicer Community
March 1, 2022 - Hi there! I’m trying to import a python library called rclpy into a scripted module, the import is working in a regular python file (outside of Slicer) on Linux but I don’t think it’s supported by pip - I followed these build instructions: GitHub - ros2/rclpy: rclpy (ROS Client Library for Python) I know this trick for importing python packages: try: import rclpy except: slicer.util.pip_install(‘rclpy’) import rclpy but is there a solution that doesn’t rely on pip?
🌐
GitHub
github.com › ros2 › rclpy › issues › 808
Importing rclpy in a capsulated python environment · Issue #808 · ros2/rclpy
July 28, 2021 - Feature request Feature description I want to use rclpy with Blender, which provides an extensive python API. The problem is that Blender has it's own Python installation to run .py scripts and add...
Author   ros2
Find elsewhere
🌐
GitHub
github.com › Wind-River › vxworks7-ros2-build › issues › 12
Rclpy deployment as part of Python3.8 fails · Issue #12 · Wind-River/vxworks7-ros2-build
February 18, 2021 - Import failing without library present on the system¶ Sometimes rclpy fails to be imported because the expected C extension libraries are not found. If so, compare the libraries present in the directory with the one mentioned in the error message. ...
Author   Wind-River
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GitHub
github.com › ros2 › rclpy › issues › 914
no module named 'rclpy._rclpy' · Issue #914 · ros2/rclpy
March 22, 2022 - I know the error is occurring because different python-versions are used. python3.8 with /opt/ros/foxy/lib/python3.8 python 3.9 with /usr/local/lib/python3.9 (line 12) so the program searches for the file: '_rclpy.cpython-39-x86_64-linux-gnu.so' but i only have the '_rclpy.cpython-38-...' on my computer. unfortunately i don't know how to change the importlib-part from python 3.9 to 3.8 to be compatible.
Author   ros2
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ROS Answers
answers.ros.org › question › 335143
ros2 run- Cannot find 'rclpy', but python node.py finds it - ROS Answers archive
I am attempting to run a python ... to find rclpy. Running the node's script with "python3.6 node.py" works fine, however. I've included a minimal example (minimalpkg/minimal.py) that triggers the warning after building and attempting to run with the following commands from the base directory of the workspace: colcon build source install/setup.bash ros2 run minimalpkg minimal · However, the node runs fine with no errors when I use the python interpreter: ... #!/usr/bin/python3.6 import rclpy from ...
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SourceTrail
sourcetrail.com › home › python › solved: vscode python import could not be resolved
Solved: vscode import could not be resolved in Python - SourceTrail
September 11, 2023 - The main problem related to VSCode Python import not being resolved is that the interpreter cannot find the module or package that you are trying to import. This can be caused by a variety of issues, such as incorrect file paths, missing ...
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ROS Answers
answers.ros.org › question › 385096 › import-rospkg-could-not-be-resolved
ros - Import "rospkg" could not be resolved - Robotics Stack Exchange
August 25, 2021 - Hello, I am using VSCode as IDE for my ROS projects. Everything works well, but when I try to import rospkg, VSCode underlines it with a yellow line and shows warning message: "Import "ro...
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Openrobotics
discourse.openrobotics.org › ros › ros general
Import error No module named 'rclpy._rclpy' cross compiling - ROS General - Open Robotics Discourse
August 18, 2017 - Hi, I am cross compiling ros2 beta2 for a ARM platform. I get the source . ./setup.sh done and after I try to launch the python talker but rclpy._rclpy cannot be imported. The default Python version is Python 3.5. The talker written with C++ works perfect. I also tried to update the rclpy repo to the latest version, and I am getting the same error. root@host:/opt/ros2/# /opt/ros2/lib/demo_nodes_py/talker Traceback (most recent call last): File "/opt/ros2/lib/demo_nodes_py/talker", line 9, ...
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GitHub
github.com › ros2 › rclpy › issues › 1144
_rclpy_pybind11.cpython-310-x86_64-linux-gnu.so failed to be imported while being present on the system · Issue #1144 · ros2/rclpy
July 20, 2023 - $ source /opt/ros/humble/setup.sh $ python3 -c "import rclpy" Traceback (most recent call last): File "<string>", line 1, in <module> File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/__init__.py", line 49, in <module> from rclpy.signals import install_signal_handlers File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/signals.py", line 15, in <module> from rclpy.exceptions import InvalidHandle File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/exceptions.py", line 15, in <module> from rclpy.impl.implementation_singleton import rclpy_implementation as _rclpy
Author   ros2
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OSMO
discovery.osmo-us-test.shoreline.nvidia.com › home › bing
5 Ways to Resolve Import Errors in VSCode - Discover OSMO Magic
June 1, 2025 - When multiple dependencies rely on incompatible versions of the same package, conflicts can occur. Use tools like npm audit or pip check to identify and resolve version conflicts. Update or downgrade packages as needed to ensure compatibility.
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Raspberry Pi Forums
forums.raspberrypi.com › board index › hardware and peripherals › raspberry pi pico › micropython
Import could not be resolved in VSCode lib folder - Raspberry Pi Forums
I'm trying to work with a Pico-W using VSCode, MicroPython and the Pico extension. When I copy a library folder to the lib folder and import it in my code I am getting the error message that the library could not be resolved in my main.py file When I upload the project to the device and look at the main.py there is no error and my code does work.
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Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 1093387 › import-could-not-be-resolved-in-vs-code
Import could not be resolved in VS Code - Microsoft Q&A
November 17, 2022 - @Krishnamohan Nadimpalli Thanks for reaching out. For your first issue Import could not be resolved in VS Code for pandas it will resolve once the panda is installed on your function environment locally.