pyrealsense2_net module not found when using pypi package on pc

[elishafer]

Required Info
Camera Model	D435
Firmware Version	05.12.13.50
Operating System & Version	Ubuntu 18
Kernel Version (Linux Only)	5.4.0-91-generic
Platform	PC
SDK Version	2.50.0
Language	python
Segment	Robot

Issue Description

I'm trying to run the net_viewer example but get an error when it tries to import pyrealsense2_net module.
ModuleNotFoundError: No module named 'pyrealsense2_net'
These are the versions That I have installed:

• pyrealsense2 version(from pypi): 2.50.0.3812
• librealsense version (as part of ros melodic): 2.50.0-1bionic.20211115.141014

Any ideas what I could be doing wrong?

[MartyG-RealSense]

Hi @elishafer There is a previous report at #9946 of the ModuleNotFoundError: No module named 'pyrealsense2_net' occurring when using the rs_viewer.py example program.

The main list of examples in the Python wrapper documentation provides the description "Shows how to connect to rs-server over network" for the rs_viewer.py example.

You may have already come across rs_server if you have read Intel's white-paper document on the subject of open-source ethernet networking.

https://dev.intelrealsense.com/docs/open-source-ethernet-networking-for-intel-realsense-depth-cameras

If you built librealsense and the RealSense ROS wrapper together from packages with the wrapper's Method 1 instructions then librealsense would not have been built with networking support included. This support can be included in the SDK by building it from source with CMake with the build flag -DBUILD_NETWORK_DEVICE=ON included in the CMake build instruction, as described in #7606 (comment)

Including the -DBUILD_NETWORK_DEVICE=ON build flag in the CMake build instruction when building librealsense from source code causes the 'realsense2-net' module and the 'rs-server' tool to be built.

[Niko-La]

is the wrapper supported for python 3.10? cant find the module on pip? is there clear instructions on building from source if that is the only option?

on windows 10

[MartyG-RealSense]

Hi @Niko-La At the time of writing this, the most recent Python version that pip install of pyrealsense2 supports is Python 3.9. Further information about this can be found at #10057

Users of newer Python versions than 3.9 should build the wrapper from source code. The simplest approach to buiding from source would be to build librealsense and the Python wrapper together at the same time using the BUILD_PYTHON_BINDINGS CMake build flag with CMake's visual GUI. There is a clearly written tutorial for doing so on Windows 10 at the link below.

https://rahulvishwakarma.wordpress.com/2019/08/17/realsense-435i-depth-rgb-multi-camera-setup-and-opencv-python-wrapper-intel-realsense-sdk-2-0-compiled-from-source-on-win10/

My own guide for building librealsense and the wrapper together from source code with CMake is at #6964 (comment)

If you decide to revert to Python 3.9 so that you can use pip install, a guide for a pip install on Windows that I wrote in the past is at #6402 (comment)

[MartyG-RealSense]

Hi @Niko-La Do you require further assistance with this case, please? Thanks!

[MartyG-RealSense]

Case closed due to no further comments received.