Agenda

  1. Creating a virtual environment

  2. Write a requirements list in a text file.

  3. Install requirements specified in the requirements file.

  4. Create a requirements text file from your installed modules (requirements.txt)

  5. Sharing code and requirements in team.

1. Create a Virtual environment

From a Jupyter Notebook

From the commandline

python -m venv .venv

Activate it

Linux/Mac

source .venv/bin/activate

Windows

source .\.venv\Scripts\activate

requirements

  # pip list
  Package    Version
  ---------- -------
  pip        20.1.1
  setuptools 46.4.0
  wheel      0.34.2

pip install requests

  # pip list
  Package    Version
  ---------- ---------
  certifi    2020.6.20
  chardet    3.0.4
  idna       2.10
  pip        20.1.1
  requests   2.24.0
  setuptools 46.4.0
  urllib3    1.25.10
  wheel      0.34.2

requirements.txt

certifi==2020.6.20
chardet==3.0.4
idna==2.10
requests==2.24.0
urllib3==1.25.10

Generate a requirements.txt from your installed packages

pip freeze > requirements.txt

Install the listed packages

pip install -r requirements.txt

.
├── .gitignore
├── Dockerfile
├── modules
│   ├── bar.py
│   ├── foo.py
│   └── util.py
├── requirements.txt
└── script.py

Ex 1: Clone and run