Activate the Python virtual environment virtualenv under Centod/Redhat

Python3 interpreter is used

Create an all_venv folder in the /opt directory, and install the virtual environment created later here

cd /opt
mkdir all_venv

Enter the all_venv folder

cd all_venv

pip install virtualenv

pip3  install virtualenv  

Create a virtual environment

virtualenv --no-site-packages --python=python3  ven1

Enter the generated /opt/all_venv/venv1/bin

cd /opt/all_venv/venv1/bin

Execution virtual environment

source activate

Close the virtual environment

deactivate