Prep Python Project

Here is how I prepare python projects.

Assuming Python3 is already installed

I uses python3 installed by default via OS package. or brew python3 (But if I have a chance to use conda and the others, I may try)

Create python3 virtual environment

I uses venv module

• Create venv
  bash

  python3 -m venv venv

• Activate venv
  bash

  source venv/bin/activate

• Here you have Isolated environment you can experiment, not affecting entire OS.

Install pip and pip-tools

• Upgrade pip to latest version
  bash

  pip install --upgrade pip

• Install pip-tools for dependencies management
  bash

  pip install pip-tools

• for more information about pip-tools see https://pypi.org/project/pip-tools/

Installing libraries

• Create requirements.in file.
  text

  django>=2.2,<3.0

• Run pip-compile
  text

  pip-compile

• You can check cat requirements.txt
  text

  #
  # This file is autogenerated by pip-compile with python 3.10
  # To update, run:
  #
  #    pip-compile
  #
  django==2.2.28
      # via -r requirements.in
  pytz==2022.1
      # via django
  sqlparse==0.4.2
      # via django

• Install libraries using pip install
  bash

  pip install -r requirements.txt

• You can check installed libraries by pip list
  text

  Package    Version
  ---------- -------
  build      0.8.0
  click      8.1.3
  Django     2.2.28
  packaging  21.3
  pep517     0.13.0
  pip        22.2.2
  pip-tools  6.8.0
  pyparsing  3.0.9
  pytz       2022.1
  setuptools 59.6.0
  sqlparse   0.4.2
  tomli      2.0.1
  wheel      0.37.1