[Python] Manage Dependencies with Python Virtual Environments

Posted 2020-10-17 Answer1215

Virtual Environments ensure that dependencies from one Python application don’t overwrite the dependencies of another application. In this lesson, you will learn how to create a virtual environment, switch between virtual environments, and manage dependencies within a virtual environment.

 

Install:

pip install virtualenv

 

Create floder for a project:

mkdir my_project
cd my_project

 

Use virtual env to generate python env:

virtualenv py3 -p /usr/local/bin/python3

Tell to use python3. Then it will create py3 folder.

 

To activate the env:

source py3/bin/activate

To deactivate

deactivate

 

To share the dependiences:

pip freeze > requirements.txt
pip install -r requirements.txt

So other developers can use the same dependiences