FastAPI Todolist

Description

Todolist aplication made with Python’s FastAPI framework and Hexagonal Architecture.

This is a test repository for the purpose of testing FastAPI framework capabilities with DDD, functional programming and Hexagonal (or Ports and Adapters) arquitecture

Overview

This project is comprised of the following languages and libraries:

Language: Python 3.8+
Package management: Poetry
Web framework: FastAPI
Production web server: Uvicorn
Relational database: Postgres
Relational database async support: databases
Relational database migrations: Alembic
Relational ORM: SQLAlchemy
Functional programming utilities: Toolz
Password hashing utilities: Passlib
Data parsing and validation: Pydantic
Testing: Pytest
Linter: Flake8
Static type checker: Mypy
Formatter: Black

Auxiliary libraries were omitted but can be found in the pyproject file.

Development

To start development it is recommended to have these utilities installed in a local development machine:

For better development experience, it is recommended these tools:

Be certain that you are installing Poetry with the correct version of Python in your machine, that is, Python 3.

This project is already configured with VS Code IDE in mind. To have access of tools and code analysis utilities, you only need to install the project dependencies locally with poetry install and to open the project workspace file on VS Code.

The IDE should be automatically configured with standard rules and options for optimal development experience.

Running the API

To run the API in development mode, follow these steps:

Start a container with: plis start --service-ports app ash
Inside the container run: poetry install
Start the web server with: poetry run web_server
Seed DB data with: poetry run seeder
Run migrations with: alembic upgrade head
Test the API with: pytest
Check code style with: black --check todolist
Format code with: black todolist
Lint the code with: flake8 todolist tests
Run static analysis with: mypy job_form_api tests

PGAdmin

A configured instance of PGAdmin for database monitoring and management is provided by default.

To start it, run: plis start pgadmin

Linting, static check and code style guide

Flake8 is the tool of choice for linting. It is configured to warn about code problems, complexity problems, common bugs and to help developers write better code.

Mypy is the tool of choice for static type checking. This project adopts gradual typing as the metodology for code typing. The rules of Mypy will be updated periodically to ensure that the entire code base is typed and consistent.

Black is the tool of choice for formating and code style guide. Black is an uncompromising formatter for Python code, that is, no code style discussions are necessary, the tool is always correct.

Linter and static type checking rules can be discussed and reviewed with the entire team. Any merge request that tries to change these rules without consent is automatically rejected and closed.