TypeError: get_info(): incompatible function arguments. The following argument types are supported: 1. (self: pyrealsense2.device, info: pyrealsense2.camera_info) -> str

[LLUWE19]

---

Required Info
Camera Model	D400
Firmware Version	(Open RealSense Viewer --> Click info)
Operating System & Version	{Win (8.1/10)
Platform	PC
SDK Version	{ legacy / 2.2.25 }
Language	python
Segment	others

Hi,

I am trying to automate the opening of multiple devices. I have managed to open multiple devices following this code:
#1735

However I want to read and load cameras automatically. I have tried following the C++ tutorial and swapping for python but cannot extract the serial number. e.g.

# Create librealsense context for managing devices
ctx = rs.context()

pipelines = []

for d in ctx.query_devices():
    print(d)
    pipe = rs.pipeline(ctx)
    cfg = rs.config()
    cfg.enable_device(d.get_info(RS2_CAMERA_INFO_SERIAL_NUMBER))
    pipe.start(cfg)
    pipelines.append(pipe)

// Start a streaming pipe per each connected device
for (auto&& dev : ctx.query_devices())
{
    rs2::pipeline pipe(ctx);
    rs2::config cfg;
    cfg.enable_device(dev.get_info(RS2_CAMERA_INFO_SERIAL_NUMBER));
    pipe.start(cfg);
    pipelines.emplace_back(pipe);
}

from C++ tutorial

To map the specific device to the newly-allocated pipeline we define rs2::config object, and assign it with the device's serial number.

from config documentation:

Select a specific device explicitly by its serial number, to be used by the pipeline.

From this information I guess I have to manually enter serial numbers?

What should I enter in the RS2_CAMERA_INFO_SERIAL_NUMBER?
Is there a way to extract the serial number automatically? Or load devices automatically?
How do I return the Serial number as a string?

TypeError: get_info(): incompatible function arguments. The following argument types are supported:
1. (self: pyrealsense2.device, info: pyrealsense2.camera_info) -> str

Am I on the right track?
Hope question makes sense and thanks for your time

[BryanVision]

Did you get this solved?

[lramati]

@BryanVision RS2_CAMERA_INFO_* is how these enum values are accessed in C++. In Python, you need rs.camera_info.* (see docs here)