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Virtual Environment

  • Create an virtual environment
  • Activate an environment
  • Install Individual Packages
  • Save packges to a file
  • Install packages from a file

TIP: Always create a virtaul environment ".ven" inside of the project folder. And, don't add any source code inside the venv folder.

Create a project folder

mkdir my-project
cd my-project

Create virtual environment inside a project folder

Python virtualenv is built into Python, other tools are Conda, pipenv, Poetry for creating virtual environments.

# Here .venv is the name of the virtual environment
python -m venv .venv

Activate virtual environment

.venv\Scripts\activate.bat

De-activate virtual environment

deactivate

Install Packages

PIP command => Preferred Installer Program

# To see installed packages
pip list 

# To install packges
pip install requests 

# To save list of packages installed in the project
pip freeze > requirements.txt 

# To install packages from the file
pip install -r requirements.txt