Python boilerplate

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Table of Contents

• Prerequisites
• Installation
• What's in the box ?
• Testing
• Docker

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Prerequisites

• Python >=3.12 <3.13 (tested with 3.12.2)
• pre-commit
• poetry >=1.2.2 <1.9 (tested with 1.8.2)
• docker (optional)

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Installation

1. Clone the git repository

   git clone https://github.com/smarlhens/python-boilerplate.git

2. Go into the project directory

   cd python-boilerplate/

3. Checkout working branch

   git checkout <branch>

4. Enable pre-commit hooks

   pre-commit install

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What's in the box ?

Poetry

Poetry is a tool for dependency management and packaging in Python. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.

pyproject.toml file (pyproject.toml): orchestrate your project and its dependencies poetry.lock file (poetry.lock): ensure that the package versions are consistent for everyone working on your project

For more configuration options and details, see the configuration docs.

pre-commit

pre-commit is a framework for managing and maintaining multi-language pre-commit hooks.

.pre-commit-config.yaml file (.pre-commit-config.yaml): describes what repositories and hooks are installed

For more configuration options and details, see the configuration docs.

ruff

ruff is an extremely fast Python linter, written in Rust.

Rules are defined in the pyproject.toml.

For more configuration options and details, see the configuration docs.

mypy

mypy is an optional static type checker for Python that aims to combine the benefits of dynamic (or "duck") typing and static typing.

Rules are defined in the pyproject.toml.

For more configuration options and details, see the configuration docs.

black

black is an uncompromising code formatter.

Rules are defined in the pyproject.toml.

For more configuration options and details, see the configuration docs.

bandit

bandit is a tool designed to find common security issues in Python code.

Rules are defined in the pyproject.toml.

For more configuration options and details, see the configuration docs.

docformatter

docformatter is a tool designed to format docstrings to follow PEP 257.

Options are defined in the .pre-commit-config.yaml.

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Testing

We are using pytest & pytest-cov to write tests.

To run tests:

poetry run pytest tests

Output

collected 1 item

tests/test_myapplication.py::test_hello_world PASSED

To run tests with coverage:

poetry run pytest tests --cov=src

Output

collected 1 item

tests/test_myapplication.py::test_hello_world PASSED

---------- coverage: platform linux, python 3.10.4-final-0 -----------
Name                            Stmts   Miss  Cover
---------------------------------------------------
src/myapplication/__init__.py       1      0   100%
src/myapplication/main.py           6      2    67%
---------------------------------------------------
TOTAL                               7      2    71%

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Docker

Build

To build the docker production image using Dockerfile:

docker build . -t my-python-application:latest

To build the docker development image using Dockerfile:

docker build . --target development -t my-python-application:dev

Run

To run the python app example inside Docker:

docker run -it --rm my-python-application:latest # or :dev for development

Output

Hello World

Execute command inside container

docker run -it --rm my-python-application:latest bash

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