Process to create virtual env for python projects

Python virtualenv steps

* Install python virtual envuornment:

    $ python3 -m pip install --user virtualenv
    
* Creating a virtualenv
   
    $ python3 -m virtualenv env

* Activate virtual environment
    
    $ source env/bin/activate

* Deactivate virtual environment
    
    $ deactivate

* Create a requirements.txt file for package intallation:
     touch requirements.txt
     
     File content:
     sympy==1.1.1
     kazoo
     .
     .
     .
     etc
    
* packages installed in the python virtual env will remain in there





Refrences: https://packaging.python.org/guides/installing-using-pip-and-virtualenv/
           https://www.youtube.com/watch?v=IX-v6yvGYFg
           https://www.youtube.com/watch?v=UcbUXq0wd-8