SyntaxError: invalid syntax ??

[snippsat]

this is an old PI3 , maybe I can't make it work ?

Which version did you install?
The newest is python 3.10 or python 3.9.5 as used in tutorial?
What folder do cd into after extracted files?
To run directly

python3.10 myscript.py
# Or
python3.9 myscript.py

but how can I do it for this part:

data_byte = b'123'
data_temp = ["{:02X}".format(byte) for byte in data_byte]
print(data_temp)

Output:
['31', '32', '33']

[korenron]

I have install the latest

Python-3.9.10

and it's in this folder

/Python-3.9.10 $

when I try to run it
I get error "ModuleNotFound "

 python3.9 ReadCanbus.py
Traceback (most recent call last):
  File "/home/pi/ReadCanbus.py", line 1, in <module>
    import can
ModuleNotFoundError: No module named 'can'

while running python3 - will work

and I did what you told me - and it's seem to be working

so thank you !

[snippsat]

I have install the latest

Python-3.9.10

That's fine,as info the lasted version is Python 3.10

I get error "ModuleNotFound "

When have a new version most install all 3-party packages that you use to this version.
Do a test of python and pip from command line,that use right version.

python --version 
# Or 
python3 --version 
 
pip --version 
# or 
pip3 --version

Installation python-can 3.3.4

pip install python-can
# Or
python3 -m pip install python-can

[korenron]

maybe I'm missing somethig

pi@localhost:~ $ nano -c ReadCanbus.py
pi@localhost:~ $ python --version
Python 2.7.13
pi@localhost:~ $ python3 --version
Python 3.5.3
pi@localhost:~ $ pip --version
pip 20.3.4 from /usr/local/lib/python2.7/dist-packages/pip (python 2.7)
pi@localhost:~ $ pip3 --version
pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.5)
pi@localhost:~ $ python3 -m pip install python-can
Collecting python-can
  Using cached https://www.piwheels.org/simple/python-can/python_can-3.3.4-py2.p              y3-none-any.whl
Collecting wrapt~=1.10 (from python-can)
  Using cached https://www.piwheels.org/simple/wrapt/wrapt-1.13.3-cp35-cp35m-lin              ux_armv7l.whl
Collecting aenum (from python-can)
    100% |גגגגגגגגגגגגגגגגגגגגגגגגגגגגגגגג| 133kB 502kB/s
Installing collected packages: wrapt, aenum, python-can
Successfully installed aenum-3.1.8 python-can-3.3.4 wrapt-1.13.3

when I run the code using python3 - everything is working
isn't Python3.9 need to use the same packages from pip3 as Python3 ?

[snippsat]

Is still use the old version
Try:

python3.9 --version

If that point to Python 3.9
Install with.

python3.9 -m pip install python-can

Then you most always use python3.9 my_script.py

Look search for alias change if want all to point to one version.
Make Python3 as Default in Ubuntu Machine

[korenron]

I get error

ERROR: Could not find a version that satisfies the requirement python-can (from versions: none)
ERROR: No matching distribution found for python-can

starnge

but never mind - this is an old PI, just for testing
thank you for all the help and the answer

I didn't know that python3.9 is not the same as python 3 and 3.5
I thought it will be update auto

Thanks you!