Python FastAPIの環境構築

なんで記載するのか？

仕事でpythonを利用する可能性が出てきたので、備忘録を兼ねて記載。

0. Project Settingup

0-1. Install Dependency

pyenvを利用するための環境構築

% brew install pyenv
% make ${PROJECT_PATH}
% cd ${PRJECT_PATH}
% pyenv local 3.12.5
% pyenv version
pyenv version
3.12.5 (set by ${PROJECT_PATH}/.python-version)

pipxの設定

macの際にx-code-toolsが必要になる。

% pwd
${PROJECT_PATH}
% brew install pipx
% pipx ensurepath

poetryのinstall

% pipx install poetry

1. Setting Up

% pwd
${PROJECT_PATH}
% poetry init -n
% poetry config virtualenvs.prefer-active-python true
% tree -a .
.
├── .python-version
└── pyproject.toml

% poetry add fastapi uvicorn
% poetry install
..
├── .python-version
├── poetry.lock
└── pyproject.toml

pyproject.toml

[tool.poetry]
name = "app"
version = "0.1.0"
description = ""
authors = [""]
readme = "README.md"

[tool.poetry.dependencies]
python = "^3.12"
fastapi = "^0.112.0"
uvicorn = "^0.30.5"


[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"

2. write sample app

% pwd
${PROJECT_PATH}
% mkdir app
% touch main.py

app/main.py

from fastapi import FastAPI


@app.get("/")
def index():
    return {"Hello": "World"}

2-1. 起動コマンドのためにMakefileをつくる

% pwd
${PROJECT_PATH}
% touch Makefile

POETRY=poetry
PACKAGE=app

dev:
	${UVICORN} $(PACKAGE).main:app --reload
 

2-2. 起動する

% make dev
oetry run uvicorn app.main:app --reload
INFO:     Will watch for changes in these directories: [${PROJECT_PATH}]
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [25050] using StatReload
INFO:     Started server process [25054]
INFO:     Waiting for application startup.
INFO:     Application startup complete.