Installing virtual environment

• Update your system

$ sudo apt-get update && sudo apt-get upgrade

• Install Virtual Environment package with below command :

$ sudo apt install virtualenv -y

• Create a python virtual environment directory for different.

$ mkdir ~/python-environments && cd ~/python-environments

Explanation :

mkdir -> is used a create folder/directory in ubuntu from
terminal
cd -> is used to change path for folder/directory path

&& -> is used to join and run 2 commands in terminal
together at once

You can run make directory and change directory command in separate line too :

$ mkdir ~/python-environments
$ cd ~/python-environments

• Now create python virtual environment :

$ virtualenv --python=python3.8 env_python38

After running create virtual enviornment commant output in terminal would be like this :

created virtual environment CPython3.8.10.final.0-64 in 80ms
  creator CPython3Posix(dest=/home/ruchika/python-environments/env_python38, clear=False, global=False)
  seeder FromAppData(download=False, pip=latest, setuptools=latest, wheel=latest, pkg_resources=latest, via=copy, app_data_dir=/home/ruchika/.local/share/virtualenv/seed-app-data/v1.0.1.debian.1)
  activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator

• type ls command to check list of file, folder in current directory :

ls

you can your created virtual environment directory :

env_python38

• Check your environment is installed with the python version is proper :

$ ls env_python38/lib

Activate and deactivate virtual environment

• Activate your virtual environment

$ source env_python38/bin/activate

After activating you see your virtual env name in rounf bracket :

(env_python38) yoursystemname:~/python-environments$

• Deactiavte (close) your virtual environment:

$ deactivate