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!Development Kit version
|-
| {{oldid|1478217112|1.0.0}}
| Oct 2022
|DESK-XZ7-L 1.0.0-rc1
== Installing python packages ==
First of all check for the default installed <code>python/pip </code> version in the DESK-XZ7 root file system:
<pre class="board-terminal">
(desk) root@bora:~#
</pre>
* upgrade ''pip3'' in the the <code>virtual environmentpip3</code>in the ''virtual environment'':
<pre class="board-terminal">
(desk) root@bora:~# pip3 install --upgrade pip
</pre>
== packages installation==
For the purposes of this Application Note, <code>pip3</code> has been used to install some python packages typically used in a controller equipment. In this example, the following packages are installed:* '''asyncua''' (OPCUA client and server library)* '''can''' (color animator)* '''cbor''' (Concise Binary Object Representation - CBOR is comparable to JSON, has a superset of JSON’s ability)* '''netifaces''' (network interface info)* '''ntplib''' (Python NTP)* '''paramiko''' (SSH2 protocol library)* '''psutil''' (process and system monitoring)* '''pymodbus''' (Modbus stack protocol)* '''python-daemon''' (Standard daemon process library)* '''python-prctl''' (C extension for system call)* '''requests''' (Python HTTP)
<pre class="board-terminal">
(desk) root@bora:~# pip3 install cbor
This issue can be overcome installing a previous version for <code>PyNaCl</code>:
It occurs only with PyNaCl==1.5.0, so you can specify PyNaCl==1.4.0. It's OK because paramiko's requirement is PyNacl>=1.0.1
For example, the version '''1.2.0''' can be succesfully installed:
(desk) root@bora:~#
</pre>
and the [https://pypi.org/project/paramiko/ paramiko] module is then installed:
<pre class="board-terminal">
(desk) root@bora:~# pip3 install paramiko
wheel 0.37.1
(desk) root@bora:~#
</pre>
== package import ==
The installed packages can be imported and used:
<pre class="board-terminal">
(env) root@bora:~# python3
Python 3.8.5 (default, Jul 20 2020, 13:26:22)
[GCC 10.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import asyncua
>>> import can
>>> import cbor
>>> import daemon
>>> import netifaces
>>> import ntplib
>>> import paramiko
>>> import psutil
>>> import pymodbus
>>> import prctl
>>> import requests
>>>
</pre>