Module can not find in nso python-vm but it did exist in local

[yongz2]

Hello ,

Is anyone know how to find path of python-vm which nso used.

I used module ipaddress in python, it worked form my local, but in nso log file it's said there is no module name ipaddress

from nso log file 

******************************************************************************************

<INFO> 8-Oct-2018::14:50:49.941 NSOCBA ncs[5858]: Azure-hosted :: import ipaddress
ImportError: No module named ipaddress

from my local

******************************************************************************************

[root@NSO]# python
Python 3.6.3 (default, Jan 4 2018, 16:40:53)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import ipaddress
>>> exit()

So how to confirm which python vm is used for nso and how to add another module for nso python-vm?

[vleijon]

The python-vm is controlled by /python-vm/start-command, by default that is $NCS_DIR/bin/ncs-start-python-vm.

You can create your own start command if you want to control how the python-vm is started, or you can make sure that $PYTHONPATH is set when ncs is started.

[yongz2]

Thanks Vleijon,

And could I know how to change python version in nso?

eg. current nso is used python2. Does it possible to modify startup.py to change nso to use python3

[vleijon · Accepted solution]

You only have to modify ncs-start-python-vm, or better, your own copy of the script. This is described in the development guide in more detail.

Python versions 2.7.5 or higher and Python 3.4 or higher are supported. (This is for 4.7, check your documentation for more details).

[yongz2]

Hello Vleijon,

It did there, thanks so much!