Differences

This shows you the differences between two versions of the page.

--- venv [2021/11/17 21:54] – created nico
+++ venv [2022/06/15 16:37] (current) – nico
@@ Line 1: / Line 1: @@
 The aim of virtualenv is to provide your own instance of Python as maintaining different versions of packages is really tricky. This tutorial shows how to have a tailored Python environement for your program :
-You can create a directory for your program
+You can create a directory for your program "mon_programme" :
-nicolas.greneche@magi1:~$ mkdir mon_programme
+  nicolas.greneche@magi1:~$ mkdir mon_programme
-nicolas.greneche@magi1:~$ cd mon_programme
+  nicolas.greneche@magi1:~$ cd mon_programme
->
-> Ensuite tu crée un virtualenv basé sur le python de magi :
+Then, you can create a virtualenv based mon Magi's Python in a subdirectory called "venv" :
->
-> nicolas.greneche@magi1:~$ virtualenv -p /usr/bin/python3.7 venv
+  nicolas.greneche@magi1:~$ virtualenv -p /usr/bin/python3.9 venv
->
-> Tu actives :
+You may activate the brand new environement :
->
-> nicolas.greneche@magi1:~$ source venv/bin/activate
+  nicolas.greneche@magi1:~$ source venv/bin/activate
->
-> Comme tu peux le voir, ton nouvel interpreteur python est celui du virtualenv :
+You can check that your default Python is from the virtualenv :
->
-> (venv) nicolas.greneche@magi1:~/mon_programme$ which python
+  (venv) nicolas.greneche@magi1:~/mon_programme$ which python
-> /nfs/homes/nicolas.greneche/mon_programme/venv/bin/python
+  /nfs/homes/nicolas.greneche/mon_programme/venv/bin/python
->
-> Et enfin tu peux installer les packages de ton choix :
+Finally, you can install your own packages in the virtualenv :
->
-> (venv) nicolas.greneche@magi1:~/mon_programme$ pip install numpy
+  (venv) nicolas.greneche@magi1:~/mon_programme$ pip install numpy