module 'pyrealsense2' has no attribute 'pipeline'

[neilyoung]

I apologize, I wasn't active here for a long time. I tested my code (Python, https://github.com/neilyoung/t265-realsense-poc-application) against the latest 2.39.0. I found some issues, for instance "context" and "pipeline" seem to be no longer attributes of pyrealsense2.

I stepped back to 2.36.0 and found everything OK as with the version 2.34.0, I tested with.

Would you mind to point me to the change here? When did it happen? How to deal with it?

[neilyoung]

Here some more information:

My OS is MacOS Catalina 10.15.7.

With 2.36.0 I get this:

Python 3.8.5 (default, Jul 21 2020, 10:48:26) 
[Clang 11.0.3 (clang-1103.0.32.62)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyrealsense2 as rs
>>> rs.pipeline()
<pyrealsense2.pipeline object at 0x1044ec4b0>
>>> rs.context()
<pyrealsense2.context object at 0x1044c35f0>
>>> 

With 2.39.0 this:

Python 3.8.5 (default, Jul 21 2020, 10:48:26) 
[Clang 11.0.3 (clang-1103.0.32.62)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyrealsense2 as rs
>>> rs.pipeline()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'pyrealsense2' has no attribute 'pipeline'
>>> rs.context()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'pyrealsense2' has no attribute 'context'
>>> 

Make procedure is:

mkdir build && cd build
cmake .. -DBUILD_EXAMPLES=false -DBUILD_WITH_OPENMP=false -DHWM_OVER_XU=false -DCMAKE_BUILD_TYPE=Release -DBUILD_PYTHON_BINDINGS=ON -DPYTHON_EXECUTABLE=/usr/local/bin/python3
make -j4
sudo make install

[neilyoung]

Does also not work with 2.38. Has maybe to do with a changed install directory for the libs...

2.38/39 is installing to /usr/local/lib/python3.8/site-packages/pyrealsense2/
2.36 is installing to /usr/local/lib

[neilyoung]

The change happened between 2.36.0 and 2.37.0

[neilyoung]

Looks like #6820

[neilyoung]

... and definitely the "fix" proposed in #6820 does it:

• Replace wrappers/python/CMakeList.txt with an older version, here 2.34.0

I don't have a good feeling with this fix, because there are a couple of changes between these two files, not just one line... Anyway, after reverting the CMakeList.txt to the 2.34.0 version everything is fine again...

The question now is: How can such a problem be unknown since month? In fact since 2.36.0 Python is dysfunctional...

[neilyoung]

Alternative approach: Use the right CMakeList.txt and change the PYTHONPATH. For instance:

Path in older versions:

export PYTHONPATH=$PYTHONPATH:/usr/local/lib

Path from 2.37.0 on (for instance):

export PYTHONPATH=$PYTHONPATH:/usr/local/Cellar/python@3.8/3.8.5/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pyrealsense2

[lancetee]

Hey nei, I have came across an issue exactly as you did, under SDK2.38,python_version=3.8, but camera works from the source code. Besides that, I use conda to create an env,python==3.6(it only support 3.5-3.7), install it from PYPI, it can also work, see if you would have a try.

[neilyoung]

@lancetee In the end it was just a changed install directory for the libs. I reported a solution here #7540 (comment).

For me that works. The PYPI is not a solution for me, because there is no package for macOS.

[MinaGabriel]

For me, I hade to do

import pyrealsense2.pyrealsense2 as rs

[TDHster]

sudo make install have a wrong place for libs. Current it in dist-packages/pyrealsense2 folder, but python search in dist-packages.
Finded workaround:
/usr/lib/python3/dist-packages/pyrealsense2$ sudo cp pybackend2* ..
/usr/lib/python3/dist-packages/pyrealsense2$ sudo cp pyrealsense2* ..

For developers - I stronlgy ask to fix this.

[PatrickNa]

For me, I hade to do

import pyrealsense2.pyrealsense2 as rs

I have build pyrealsense version 2.40 with Python 3.8 on a Jetson Xavier AGX and also ran into the module 'pyrealsense2' has no attribute 'pipeline' issue. The quoted hint from @MinaGabriel works for me, too. However I would like it to behave as any other module with a 'simple' import.

The following shows where everything was installed. Since I created a virtual environment it is also copying the files to the respective directory.

Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/librealsense2.so.2.40.0
-- Installing: /usr/local/lib/librealsense2.so.2.40
-- Installing: /usr/local/lib/librealsense2.so
-- Up-to-date: /usr/local/include/librealsense2
-- Up-to-date: /usr/local/include/librealsense2/hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_options.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_context.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_serializable_device.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_pipeline.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_internal.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_types.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_sensor.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_record_playback.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_device.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_frame.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_processing.hpp
-- Up-to-date: /usr/local/include/librealsense2/hpp/rs_export.hpp
-- Up-to-date: /usr/local/include/librealsense2/rs_advanced_mode.hpp
-- Up-to-date: /usr/local/include/librealsense2/rs.hpp
-- Up-to-date: /usr/local/include/librealsense2/rsutil.h
-- Up-to-date: /usr/local/include/librealsense2/h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_record_playback.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_types.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_processing.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_config.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_sensor.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_advanced_mode_command.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_internal.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_device.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_option.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_frame.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_context.h
-- Up-to-date: /usr/local/include/librealsense2/h/rs_pipeline.h
-- Up-to-date: /usr/local/include/librealsense2/rs.h
-- Up-to-date: /usr/local/include/librealsense2/rs_advanced_mode.h
-- Installing: /usr/local/lib/cmake/realsense2/realsense2Targets.cmake
-- Installing: /usr/local/lib/cmake/realsense2/realsense2Targets-noconfig.cmake
-- Installing: /usr/local/lib/cmake/realsense2/realsense2Config.cmake
-- Installing: /usr/local/lib/cmake/realsense2/realsense2ConfigVersion.cmake
-- Installing: /usr/local/lib/pkgconfig/realsense2.pc
-- Installing: /usr/local/lib/librealsense-file.a
-- Installing: /home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pybackend2.cpython-38-aarch64-linux-gnu.so.2.40.0
-- Installing: /home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pybackend2.cpython-38-aarch64-linux-gnu.so.2
-- Installing: /home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pybackend2.cpython-38-aarch64-linux-gnu.so
-- Installing: /home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pyrealsense2.cpython-38-aarch64-linux-gnu.so.2.40.0
-- Installing: /home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pyrealsense2.cpython-38-aarch64-linux-gnu.so.2.40
-- Set runtime path of "/home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pyrealsense2.cpython-38-aarch64-linux-gnu.so.2.40.0" to ""
-- Installing: /home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/pyrealsense2.cpython-38-aarch64-linux-gnu.so
-- Installing: /usr/local/lib/cmake/pyrealsense2/pyrealsense2Targets.cmake
-- Installing: /usr/local/lib/cmake/pyrealsense2/pyrealsense2Targets-noconfig.cmake
-- Installing: /usr/local/lib/cmake/pyrealsense2/pyrealsense2Config.cmake
-- Installing: /usr/local/lib/cmake/pyrealsense2/pyrealsense2ConfigVersion.cmake
-- Installing: /usr/local/lib/librealsense2-gl.so.2.40.0
-- Installing: /usr/local/lib/librealsense2-gl.so.2.40
-- Set runtime path of "/usr/local/lib/librealsense2-gl.so.2.40.0" to ""
-- Installing: /usr/local/lib/librealsense2-gl.so
-- Up-to-date: /usr/local/include/librealsense2-gl/rs_processing_gl.h
-- Up-to-date: /usr/local/include/librealsense2-gl/rs_processing_gl.hpp
-- Installing: /usr/local/lib/cmake/realsense2-gl/realsense2-glTargets.cmake
-- Installing: /usr/local/lib/cmake/realsense2-gl/realsense2-glTargets-noconfig.cmake
-- Installing: /usr/local/lib/cmake/realsense2-gl/realsense2-glConfig.cmake
-- Installing: /usr/local/lib/cmake/realsense2-gl/realsense2-glConfigVersion.cmake
-- Installing: /usr/local/lib/pkgconfig/realsense2-gl.pc
-- Installing: /usr/local/bin/rs-hello-realsense
-- Set runtime path of "/usr/local/bin/rs-hello-realsense" to ""
-- Installing: /usr/local/bin/rs-software-device
-- Set runtime path of "/usr/local/bin/rs-software-device" to ""
-- Installing: /usr/local/bin/rs-capture
-- Set runtime path of "/usr/local/bin/rs-capture" to ""
-- Installing: /usr/local/bin/rs-callback
-- Set runtime path of "/usr/local/bin/rs-callback" to ""
-- Installing: /usr/local/bin/rs-save-to-disk
-- Set runtime path of "/usr/local/bin/rs-save-to-disk" to ""
-- Installing: /usr/local/bin/rs-multicam
-- Set runtime path of "/usr/local/bin/rs-multicam" to ""
-- Installing: /usr/local/bin/rs-pointcloud
-- Set runtime path of "/usr/local/bin/rs-pointcloud" to ""
-- Installing: /usr/local/bin/rs-align
-- Set runtime path of "/usr/local/bin/rs-align" to ""
-- Installing: /usr/local/bin/rs-align-advanced
-- Set runtime path of "/usr/local/bin/rs-align-advanced" to ""
-- Installing: /usr/local/bin/rs-sensor-control
-- Set runtime path of "/usr/local/bin/rs-sensor-control" to ""
-- Installing: /usr/local/bin/rs-measure
-- Set runtime path of "/usr/local/bin/rs-measure" to ""
-- Installing: /usr/local/bin/rs-depth
-- Set runtime path of "/usr/local/bin/rs-depth" to ""
-- Installing: /usr/local/bin/rs-color
-- Set runtime path of "/usr/local/bin/rs-color" to ""
-- Installing: /usr/local/bin/rs-distance
-- Set runtime path of "/usr/local/bin/rs-distance" to ""
-- Installing: /usr/local/bin/rs-post-processing
-- Set runtime path of "/usr/local/bin/rs-post-processing" to ""
-- Installing: /usr/local/bin/rs-record-playback
-- Set runtime path of "/usr/local/bin/rs-record-playback" to ""
-- Installing: /usr/local/bin/rs-motion
-- Set runtime path of "/usr/local/bin/rs-motion" to ""
-- Installing: /usr/local/bin/rs-gl
-- Set runtime path of "/usr/local/bin/rs-gl" to ""
-- Installing: /usr/local/bin/rs-pose
-- Set runtime path of "/usr/local/bin/rs-pose" to ""
-- Installing: /usr/local/bin/rs-pose-predict
-- Set runtime path of "/usr/local/bin/rs-pose-predict" to ""
-- Installing: /usr/local/bin/rs-pose-and-image
-- Set runtime path of "/usr/local/bin/rs-pose-and-image" to ""
-- Installing: /usr/local/bin/rs-trajectory
-- Set runtime path of "/usr/local/bin/rs-trajectory" to ""
-- Installing: /usr/local/bin/rs-ar-basic
-- Set runtime path of "/usr/local/bin/rs-ar-basic" to ""
-- Installing: /usr/local/bin/rs-ar-advanced
-- Set runtime path of "/usr/local/bin/rs-ar-advanced" to ""
-- Installing: /usr/local/bin/rs-tracking-and-depth
-- Set runtime path of "/usr/local/bin/rs-tracking-and-depth" to ""
-- Installing: /usr/local/bin/rs-hdr
-- Set runtime path of "/usr/local/bin/rs-hdr" to ""
-- Installing: /usr/local/bin/rs-convert
-- Set runtime path of "/usr/local/bin/rs-convert" to ""
-- Installing: /usr/local/bin/rs-enumerate-devices
-- Set runtime path of "/usr/local/bin/rs-enumerate-devices" to ""
-- Installing: /usr/local/bin/rs-fw-logger
-- Set runtime path of "/usr/local/bin/rs-fw-logger" to ""
-- Installing: /usr/local/bin/rs-terminal
-- Set runtime path of "/usr/local/bin/rs-terminal" to ""
-- Installing: /usr/local/bin/rs-record
-- Set runtime path of "/usr/local/bin/rs-record" to ""
-- Installing: /usr/local/bin/rs-fw-update
-- Set runtime path of "/usr/local/bin/rs-fw-update" to ""
-- Installing: /usr/local/bin/rs-data-collect
-- Set runtime path of "/usr/local/bin/rs-data-collect" to ""
-- Installing: /usr/local/bin/realsense-viewer
-- Set runtime path of "/usr/local/bin/realsense-viewer" to ""
-- Installing: /usr/local/bin/rs-depth-quality
-- Set runtime path of "/usr/local/bin/rs-depth-quality" to ""
-- Installing: /usr/local/bin/rs-rosbag-inspector
-- Set runtime path of "/usr/local/bin/rs-rosbag-inspector" to ""
-- Installing: /usr/local/bin/rs-benchmark
-- Set runtime path of "/usr/local/bin/rs-benchmark" to ""
-- Installing: /usr/local/lib/libfw.a

@neilyoung where would you point the export to?

[PatrickNa]

In my case also the following is an option:

export PYTHONPATH=$PYTHONPATH:/home/xavier/venv-python38/road-detection/lib/python3.8/site-packages/pyrealsense2/

Please note that I have installed it within a virtual environment.

[brunovollmer]

Same problem here.

[ranushw]

For me, I hade to do

import pyrealsense2.pyrealsense2 as rs

This worked for me. I am using RPi3+ with Realsense d435i. Thanks.

[07hokage]

For me, I hade to do

import pyrealsense2.pyrealsense2 as rs

This worked for me . But i worked on it a bit on why we had to do this. Like @TDHster mentioned, python looks in dist-packages/pyrealsense2. this pyrealsense2 folder has the .so objects. But to be able to treat this as a library package, copy the init.py file from librealsense wrapper.

sudo cp librealsense/wrappers/python/pyrealsense2/__init__.py /usr/local/lib/python3.6/dist-packages/pyrealsense/ . After doing this one can directly do import pyrealsense2 as rs

Note: I had pyrealsense2 folder present at /usr/local/lib/python3.6/dist-packages after its been built

[ktsujister]

@07hokage 's solution worked for me.
It would be great if __init__.py file also gets copied to the target directory when make install is executed.

[jash-maester]

For me, I hade to do
import pyrealsense2.pyrealsense2 as rs

Worked for me too, as of this date. Same issue with the dist-packages/pyrealsense2/*.so

For those who are having difficulty in finding the location of their pyrealsense2*.so, here's a simple shell one-liner
find / -name "*pyrealsense2*"
Few locaitons are bound to be inaccessible if executed without sudo, and that's completely fine,