SyntaxError: invalid syntax (Line 82)

[Nornode]

Trying: sudo python ./cc2538-bsl.py -p "/dev/ttyUSB1" -ewv "CC2652RB_coordinator_20210120.hex" results in:

File "./cc2538-bsl.py", line 82
    print(message, end=attr, file=sys.stderr)
                      ^
SyntaxError: invalid syntax

python --version
Python 3.9.6

And Python 3.7.7

[jayrobwilliams]

I had this same error with Python 3.5, 3.7, and 3.9 when using a conda environment. When I used pip3 to install the dependencies and used my system python to run the script, everything worked fine. Maybe there is a difference in one of the dependencies between pip and conda.

[JelmerT]

This looks like an odd error, the error looks like you're running python 2, but when you do --version it is python 3.

Is there a reason why you're using sudo? and might that influence the python version that's being used? Could you try sudo python --version?

Is @jayrobwilliams his suggestion relevant to you?

[jayrobwilliams]

I had to use sudo because I got a permissions error when I didn't. You're right that sudo python is invoking the system python instead of the conda one:

$ which python
/home/rob/miniconda3/envs/zigbee/bin/python
sudo which python
/usr/bin/python

Turns out this is due to sudo having a different PATH than a standard shell, and can be fixed by running sudo conda activate <environment> instead of simply conda activate <environment> https://stackoverflow.com/a/36659493.

[JelmerT]

@Nornode did you see the same issue as @jayrobwilliams , did this fix your problem?