connection with multiple camera

I’m using two cameras for the experiment. I use pypylon to communicate with cameras and my laptop (MacOs 11.6).

With below code,

# list cameras connected with PC
# set the maximum number of devices
maxCamerasToUse = 2

# get transport layer and all attached devices
tl_factory = pylon.TlFactory.GetInstance()
devices = tl_factory.EnumerateDevices()
if len(devices) == 0:
    raise pylon.RuntimeException("No camera connected")
else:
    print(len(devices))
    for device in devices:
        print(device.GetFriendlyName()) # return readable name
        print(device.GetFullName()) # return unique code

I check the connections of my cameras and it should print out two different cameras with their own SN name.

However, when I ran the code, occasionally I got duplicated two camera SN names or two different camera SN names (which is desirable).

# desirable case
2
acA1300_SN03 (21585923)
Basler acA1300-30gc#003053183303#169.254.4.51:3956
acA1300_SN01 (21566554)
Basler acA1300-30gc#00305317E75A#169.254.91.231:3956

# weird case
2
acA1300_SN01 (21566554)
Basler acA1300-30gc#00305317E75A#169.254.91.231:3956
acA1300_SN01 (21566554)
Basler acA1300-30gc#00305317E75A#169.254.91.231:3956

And even when I connected one camera and ran the code, I got following output.

2
acA1300_SN03 (21585923)
Basler acA1300-30gc#003053183303#169.254.4.51:3956
acA1300_SN03 (21585923)
Basler acA1300-30gc#003053183303#169.254.4.51:3956

It supposed to print out e.g.,

1
acA1300_SN03 (21585923)
Basler acA1300-30gc#003053183303#169.254.4.51:3956

Is there something wrong with my code or should I change the setup?

[kimdonggyun]

Done. After I removed the libTL*, I got only one camera for each. Thanks. I will close the case

[thiesmoeller]

The cmdline would work in a homebrew python environment.

The python snippet in the one liner just outputs where pypylon is installed in your environment.

The issue isbon macos, that the current installer puts the same libraries under two names into the system. This résults in the the double enumeration. Just delete the ones libTl* with the version number in them