virtual environment.md

Virtual Environment

virtual environment, is a good practice to do projects in python. It helps to organised the required working modules and python interpreter version.

here are some commands for working with virtual env:

• create
• activate
• check
• export requirements.txt
• use requirements.txt to create
• deactivate

pip --> pip or pip3

To download virtual evn for python:

• $ pip install virtualenv

list the downloaded packages and modules:

• $ pip list

In the project director

create a virtual environment

• $ virtualenv <name of environment>

activates the virtual environment

• $ source <name of environment>/bin/activate

To tell the path of python interpreter which is going to run files

• $ which python

To tell the path of the pip

• $ which pip

To make a .txt file of installed packages

• $ pip freeze --local > requirements.txt

To deactivate

• $ deactivate

To remove virtual env folder

• $ rm -rf <directory name>

To download the required packages, from requirements.txt

• $ pip install -r requirements.txt