# virtualenv is a virtual Python environment builder. 
# It helps a user to create multiple Python environments side-by-side. Thereby, it can avoid compatibility issues between the different versions of the libraries.
# The following command installs virtualenv
# pip install virtualenv
# cd  directory 
# vitualenv <dir_name(.env)>

# # TO ACTIVATE
# source /.env/bin/activate

# # TO deactivate

# deactivate