[STS10/SPN9] Check Python version and ensure alias is present Check Python version and ensure alias is present

Introduction

This article aims at fixing common python errors.

STS10.3.2 and STS10.4

If Python not properly set, you can get this error when tail -f /var/log/systran/translation-resources/*

nslation-resource-monitor/workspace/2ea3cb4e-18c8-460a-a917-1967af323df1/data/env3.9/bin/systran-pte-server'
log-tr-bbee79e1-8ba7-42b3-ba79-001f6a1736c9-instance-dcb0a14f-d840-4a4a-9796-f11cded17f0f-err.txt:FileNotFoundError: [Errno 2] No such file or directory: b'/opt/systran/translation-resource-monitor/workspace/2ea3cb4e-18c8-460a-a917-1967af323df1/data/env3.9/bin/systran-pte-server'

Ensure python3 alias is set to python 3.9:

cd /etc/alternatives
ll python*

If not, adjust:

sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.9 1

or

ln -s python3 /usr/bin/python

/!\ Then you need to reinstall the translation resources

STS10.0 and STS10.1

If Python not properly set, you can get this error when tail -f /var/log/systran/translation-resources/*

Sep 05 10:07:19 XXXXXX TranslationResourceMonitor[2438372]: 2024-Sep-05 10:07:19.755287 UTC [TRM] ERROR         ModuleNotFoundError: No module named 'requests'

Ensure python3 alias is set to python 3.9:

# /usr/bin/env python3 --version
Python 3.9.x

If not, adjust:

alternatives --set python3 /usr/bin/python3.9

or

update-alternatives --set python3 /usr/bin/python3.9

Ensure whereis python give you a path to a binary:

# whereis python
python: /usr/bin/python

If not:

ln -s /usr/bin/python3 /usr/bin/python

SPN9

Before upgrading your engine to the latest version, kindly ensure your python alias is correct.

What error should I face if I d not have the right alias?

Your PTE component may crash loop and you get the following errors in the /var/log/systran/translation-resources/* files

/usr/bin/env: 'python': No such file or directory

or

 /usr/bin/python: 'python': No such file or directory

How do I fix this?

Run the followig script (as root):

if [ -f /usr/bin/python3 ]; then
echo "Activate python3"
sudo alternatives --set python /usr/bin/python3 || alternatives --config python3
[ ! -f /usr/bin/python ] && sudo ln -s /usr/bin/python3 /usr/bin/python
else 
echo "Activate python2"
sudo alternatives --set python /usr/bin/python2
[ ! -f /usr/bin/python ] && sudo ln -s /usr/bin/python2 /usr/bin/python
fi

What if still doesnt work?

If error message is: /usr/bin/env: 'python2': No such file or directory, then you will have to upgrade your Common PTE to a version >= 9.13.0