[{"_path":"/posts/2022/01/hello-world","_draft":false,"_partial":false,"_empty":false,"title":"Hello World","description":"code deploy","excerpt":{"type":"root","children":[{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":":checked: deploy\n🚀\n:check-mark: code"}]}]},"published_at":"2022-01-01T00:00:00.000Z","image":"/images/fleurs-blanches.jpg","image_caption":"Kelly L @kellymlacy","tags":["Hello World","Blabla"],"body":{"type":"root","children":[{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":":checked: deploy\n🚀\n:check-mark: code"}]}],"toc":{"title":"","searchDepth":2,"depth":2,"links":[]}},"_type":"markdown","_id":"content:posts:2022:01:hello-world.md","_source":"content","_file":"posts/2022/01/hello-world.md","_extension":"md"},{"_path":"/posts/2022/03/creer-une-api-en-quelques-minutes-avec-fastapi","_draft":false,"_partial":false,"_empty":false,"title":"Créer une API en quelques minutes avec FastAPI","description":"FastAPI est un très bon outil pour développer rapidement des API en Python. Dans cet article, nous allons voir pourquoi le choix de ce framework et comment créer notre première application en quelques minutes.","excerpt":{"type":"root","children":[{"type":"element","tag":"h2","props":{"id":"pourquoi-fastapi-"},"children":[{"type":"text","value":"Pourquoi FastAPI 🚀"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"En consultant le site de "},{"type":"element","tag":"a","props":{"href":"https://fastapi.tiangolo.com/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"FastAPI"}]},{"type":"text","value":", la promesse est assez clair:"}]},{"type":"element","tag":"blockquote","props":{},"children":[{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"FastAPI framework, high performance, easy to learn, fast to code, ready for production"}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Le message est claire: performance et facilité.  Le framework nous propose également une liste de features intéressante dont:"}]},{"type":"element","tag":"ul","props":{},"children":[{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"l'intégration de l'auto-documentation se basant sur OpenAPI"}]},{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"l'utilisation des dernières mises à jours de Python comme l'async/await et le typage"}]},{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"l'injéction de dépendences"}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Vous pouvez consulter la liste complète des features "},{"type":"element","tag":"a","props":{"href":"https://fastapi.tiangolo.com/features/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"ici"}]},{"type":"text","value":"."}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Il a été également élu \"New Tool of the Year\" en 2021 par "},{"type":"element","tag":"a","props":{"href":"https://stackshare.io/posts/top-developer-tools-2021","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"stackshare"}]}]},{"type":"element","tag":"h2","props":{"id":"installation"},"children":[{"type":"text","value":"Installation"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"On commence avec la création de l'environnement virtuel avec le module "},{"type":"element","tag":"a","props":{"href":"https://docs.python.org/fr/3/library/venv.html","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"venv"}]},{"type":"text","value":" de Python."}]},{"type":"element","tag":"code","props":{"code":"# initialisation du venv\npython3 -m venv venv\n\n# activation du venv\nsource venv/bin/activate\n","language":"bash"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"# initialisation du venv\npython3 -m venv venv\n\n# activation du venv\nsource venv/bin/activate\n"}]}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Concernant les requirements, nous avons besoin d'installer:"}]},{"type":"element","tag":"ul","props":{},"children":[{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"Le framework FastAPI"}]},{"type":"element","tag":"li","props":{},"children":[{"type":"element","tag":"a","props":{"href":"http://www.uvicorn.org/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"Uvicorn"}]},{"type":"text","value":" afin d'obtenir un serveur web permettant de gérer l'asynchrone. C'est un ASGI (Asynchronous Server Gateway Interface)"}]}]},{"type":"element","tag":"code","props":{"code":"# création du fichier requirements\ntouch requirements.txt\n\n# écriture des dépendances dans le fichier\ncat <<EOT >> requirements.txt\nfastapi==0.73.0\nuvicorn==0.17.4\nEOT\n\n# installation\npip install -r requirements.txt\n","language":"bash"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"# création du fichier requirements\ntouch requirements.txt\n\n# écriture des dépendances dans le fichier\ncat <<EOT >> requirements.txt\nfastapi==0.73.0\nuvicorn==0.17.4\nEOT\n\n# installation\npip install -r requirements.txt\n"}]}]}]},{"type":"element","tag":"h2","props":{"id":"création-de-la-première-route"},"children":[{"type":"text","value":"Création de la première route"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Maintenant que toutes les dépendances sont installées, nous pouvons créer notre première route de notre projet FastAPI."}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Pour cela, nous créons un dossier "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"app"}]},{"type":"text","value":" et à l'intérieur de ce dernier, un fichier "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"main.py"}]},{"type":"text","value":" qui va contenir la déclaration de notre première route."}]},{"type":"element","tag":"code","props":{"code":"# ~/app/main.py\nfrom fastapi import FastAPI\n\napp = FastAPI()\n\n\n@app.get(\"/\")\nasync def read_home():\n    return {\"Music\": \"Song\"}\n","language":"python"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"# ~/app/main.py\nfrom fastapi import FastAPI\n\napp = FastAPI()\n\n\n@app.get(\"/\")\nasync def read_home():\n    return {\"Music\": \"Song\"}\n"}]}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Nous pouvons maintenant lancer uvicorn, à la racine de notre projet:"}]},{"type":"element","tag":"code","props":{"code":"uvicorn app.main:app --reload\n","language":"bash"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"uvicorn app.main:app --reload\n"}]}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Vous pouvez maintenant accéder à votre API en allant sur "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"http://127.0.0.1:8000"}]},{"type":"text","value":"et sur la documentation de votre route "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"http://127.0.0.1:8000/docs"}]},{"type":"text","value":"."}]},{"type":"element","tag":"h2","props":{"id":"actions"},"children":[{"type":"text","value":"Actions"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Ok, maintenant que notre projet fonctionne et que nous pouvons visualiser le résultat de notre première route, nous allons construire notre gestion des titres de musique avec des actions simples."}]},{"type":"element","tag":"h3","props":{"id":"avant-de-commencer-un-peu-de-typage"},"children":[{"type":"text","value":"Avant de commencer, un peu de typage"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"C'est le bon moment pour introduire "},{"type":"element","tag":"a","props":{"href":"https://pydantic-docs.helpmanual.io/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"pydantic"}]},{"type":"text","value":" qui permet de nous faciliter la vie avec la validation de notre modèle en l'occurence "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"Song"}]},{"type":"text","value":" dans notre cas."}]},{"type":"element","tag":"code","props":{"code":"from typing import List\nfrom pydantic import BaseModel\n\n\nclass Song(BaseModel):\n    id: int\n    title: str\n    artist: str\n    genre: List[str]\n\n\n# Notre liste de musiques\nsongs: List[Song] = [\n    Song(\n        id=1,\n        title='Gung Ho',\n        artist='Shaka Ponk',\n        genre=['Rock', 'Electronic rock']\n    ),\n    Song(\n        id=2,\n        title='Rusty Fonky',\n        artist='Shaka Ponk',\n        genre=['Rock', 'Electronic rock']\n    ),\n]\n","language":"python"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"from typing import List\nfrom pydantic import BaseModel\n\n\nclass Song(BaseModel):\n    id: int\n    title: str\n    artist: str\n    genre: List[str]\n\n\n# Notre liste de musiques\nsongs: List[Song] = [\n    Song(\n        id=1,\n        title='Gung Ho',\n        artist='Shaka Ponk',\n        genre=['Rock', 'Electronic rock']\n    ),\n    Song(\n        id=2,\n        title='Rusty Fonky',\n        artist='Shaka Ponk',\n        genre=['Rock', 'Electronic rock']\n    ),\n]\n"}]}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"On déclare notre modèle "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"Song"}]},{"type":"text","value":" étendu de "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"BaseModel"}]},{"type":"text","value":" avec les différents attributs. Puis nous créons en dessous notre variable songs qui est typé comme liste de "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"Song"}]},{"type":"text","value":"."}]},{"type":"element","tag":"h3","props":{"id":"lister-les-titres-de-musiques"},"children":[{"type":"text","value":"Lister les titres de musiques"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Dans l'exemple suivant, la route retourne la collection de musique précédemment créée. "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"response_model"}]},{"type":"text","value":" permet de contrôler quel forme de réponse doit retourner "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"/songs"}]},{"type":"text","value":"."}]},{"type":"element","tag":"code","props":{"code":"@app.get(\"/songs\", response_model=List[Song])\nasync def get_songs():\n    return songs\n","language":"python"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"@app.get(\"/songs\", response_model=List[Song])\nasync def get_songs():\n    return songs\n"}]}]}]},{"type":"element","tag":"h3","props":{"id":"trouver-une-musique-en-fonction-de-son-id"},"children":[{"type":"text","value":"Trouver une musique en fonction de son id"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"La route suivante filtre la collection de musique par son id. Notez le typage associé au paramètre "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"song_id"}]},{"type":"text","value":", FastAPI lévera automatiquement une exception si le paramètre passé n'est pas de type "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"int"}]},{"type":"text","value":"."}]},{"type":"element","tag":"code","props":{"code":"@app.get(\"/songs/{song_id}\", response_model=Song)\nasync def get_song(song_id: int):\n    # retourne le premier résultat positif dans les dictionnaires de la liste.\n    song = next((s for s in songs if s['id'] == song_id), None)\n\n    if not song:\n        raise HTTPException(status_code=404, detail=\"Song not found\")\n\n    return song\n","language":"python"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"@app.get(\"/songs/{song_id}\", response_model=Song)\nasync def get_song(song_id: int):\n    # retourne le premier résultat positif dans les dictionnaires de la liste.\n    song = next((s for s in songs if s['id'] == song_id), None)\n\n    if not song:\n        raise HTTPException(status_code=404, detail=\"Song not found\")\n\n    return song\n"}]}]}]},{"type":"element","tag":"h3","props":{"id":"créer-une-nouvelle-musique"},"children":[{"type":"text","value":"Créer une nouvelle musique"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Pour ajouter une nouvelle musique à notre collection, nous utilisons le verbe "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"POST"}]},{"type":"text","value":". Un modèle "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"SongCreate"}]},{"type":"text","value":" a aussi été créé afin de valider le body envoyé.\nUne fois que ce dernier est validé, on instancie une classe "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"Song"}]},{"type":"text","value":" avec les données validées puis nous y ajoutons un "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"ID"}]},{"type":"text","value":" unique pour notre collection.  "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"Song"}]},{"type":"text","value":" est ensuite ajouté à notre collection de musique."}]},{"type":"element","tag":"code","props":{"code":"class SongCreate(BaseModel):\n    title: str\n    artist: str\n    genre: List[str]\n\n\n@app.post(\"/songs\", response_model=Song)\nasync def get_songs(song: SongCreate):\n    last_song_registered = max(songs, key=lambda s: s.id)\n\n    new_id = last_song_registered.id + 1\n    new_song = Song(**song.dict(), id=new_id)\n\n    # On ajoute la nouvelle chanson à notre collection\n    songs.append(new_song)\n\n    return new_song\n","language":"python"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"class SongCreate(BaseModel):\n    title: str\n    artist: str\n    genre: List[str]\n\n\n@app.post(\"/songs\", response_model=Song)\nasync def get_songs(song: SongCreate):\n    last_song_registered = max(songs, key=lambda s: s.id)\n\n    new_id = last_song_registered.id + 1\n    new_song = Song(**song.dict(), id=new_id)\n\n    # On ajoute la nouvelle chanson à notre collection\n    songs.append(new_song)\n\n    return new_song\n"}]}]}]},{"type":"element","tag":"h3","props":{"id":"supprimer-une-musique-de-notre-collection"},"children":[{"type":"text","value":"Supprimer une musique de notre collection"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Enfin il nous manque l'action de supprimer une musique par son "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"ID"}]},{"type":"text","value":". Pour cela, nous utilisons le verbe "},{"type":"element","tag":"code-inline","props":{},"children":[{"type":"text","value":"DELETE"}]},{"type":"text","value":". Une exception est levée si l'index n'est pas trouvé dans la collection de musique."}]},{"type":"element","tag":"code","props":{"code":"@app.delete(\"/songs/{song_id}\")\nasync def delete_songs(song_id: int):\n    index_song = next((index for (index, s) in enumerate(songs) if s.id == song_id), None)\n\n    if index_song is None:\n        raise HTTPException(status_code=404, detail=f\"Song not found\")\n\n    del songs[index_song]\n    return {}\n","language":"python"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"text","value":"@app.delete(\"/songs/{song_id}\")\nasync def delete_songs(song_id: int):\n    index_song = next((index for (index, s) in enumerate(songs) if s.id == song_id), None)\n\n    if index_song is None:\n        raise HTTPException(status_code=404, detail=f\"Song not found\")\n\n    del songs[index_song]\n    return {}\n"}]}]}]}]},"published_at":"2022-03-15T00:00:00.000Z","image":"/images/timelapse.jpg","image_caption":"Kelly L @kellymlacy","tags":["Python","API"],"body":{"type":"root","children":[{"type":"element","tag":"h2","props":{"id":"pourquoi-fastapi-"},"children":[{"type":"text","value":"Pourquoi FastAPI 🚀"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"En consultant le site de "},{"type":"element","tag":"a","props":{"href":"https://fastapi.tiangolo.com/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"FastAPI"}]},{"type":"text","value":", la promesse est assez clair:"}]},{"type":"element","tag":"blockquote","props":{},"children":[{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"FastAPI framework, high performance, easy to learn, fast to code, ready for production"}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Le message est claire: performance et facilité.  Le framework nous propose également une liste de features intéressante dont:"}]},{"type":"element","tag":"ul","props":{},"children":[{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"l'intégration de l'auto-documentation se basant sur OpenAPI"}]},{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"l'utilisation des dernières mises à jours de Python comme l'async/await et le typage"}]},{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"l'injéction de dépendences"}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Vous pouvez consulter la liste complète des features "},{"type":"element","tag":"a","props":{"href":"https://fastapi.tiangolo.com/features/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"ici"}]},{"type":"text","value":"."}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Il a été également élu \"New Tool of the Year\" en 2021 par "},{"type":"element","tag":"a","props":{"href":"https://stackshare.io/posts/top-developer-tools-2021","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"stackshare"}]}]},{"type":"element","tag":"h2","props":{"id":"installation"},"children":[{"type":"text","value":"Installation"}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"On commence avec la création de l'environnement virtuel avec le module "},{"type":"element","tag":"a","props":{"href":"https://docs.python.org/fr/3/library/venv.html","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"venv"}]},{"type":"text","value":" de Python."}]},{"type":"element","tag":"code","props":{"code":"# initialisation du venv\npython3 -m venv venv\n\n# activation du venv\nsource venv/bin/activate\n","language":"bash"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#545454"}},"children":[{"type":"text","value":"# initialisation du venv"}]}]},{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#EEFFFF"}},"children":[{"type":"text","value":"python3 -m venv venv"}]}]},{"type":"element","tag":"span","props":{"class":"line"},"children":[]},{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#545454"}},"children":[{"type":"text","value":"# activation du venv"}]}]},{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#82AAFF"}},"children":[{"type":"text","value":"source"}]},{"type":"element","tag":"span","props":{"style":{"color":"#EEFFFF"}},"children":[{"type":"text","value":" venv/bin/activate"}]}]}]}]}]},{"type":"element","tag":"p","props":{},"children":[{"type":"text","value":"Concernant les requirements, nous avons besoin d'installer:"}]},{"type":"element","tag":"ul","props":{},"children":[{"type":"element","tag":"li","props":{},"children":[{"type":"text","value":"Le framework FastAPI"}]},{"type":"element","tag":"li","props":{},"children":[{"type":"element","tag":"a","props":{"href":"http://www.uvicorn.org/","rel":["nofollow","noopener","noreferrer"],"target":"_blank"},"children":[{"type":"text","value":"Uvicorn"}]},{"type":"text","value":" afin d'obtenir un serveur web permettant de gérer l'asynchrone. C'est un ASGI (Asynchronous Server Gateway Interface)"}]}]},{"type":"element","tag":"code","props":{"code":"# création du fichier requirements\ntouch requirements.txt\n\n# écriture des dépendances dans le fichier\ncat <<EOT >> requirements.txt\nfastapi==0.73.0\nuvicorn==0.17.4\nEOT\n\n# installation\npip install -r requirements.txt\n","language":"bash"},"children":[{"type":"element","tag":"pre","props":{},"children":[{"type":"element","tag":"code","props":{"__ignoreMap":""},"children":[{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#545454"}},"children":[{"type":"text","value":"# création du fichier requirements"}]}]},{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#EEFFFF"}},"children":[{"type":"text","value":"touch requirements.txt"}]}]},{"type":"element","tag":"span","props":{"class":"line"},"children":[]},{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#545454"}},"children":[{"type":"text","value":"# écriture des dépendances dans le fichier"}]}]},{"type":"element","tag":"span","props":{"class":"line"},"children":[{"type":"element","tag":"span","props":{"style":{"color":"#EEFFFF"}},"children":[{"type":"text","value":"cat "}]},{"type":"element","tag":"span","props":{"style":{"color":"#89DDFF"}},"children":[{"type":"text","value":"<<"}]},{"type":"element","tag":"span","props":{"style":{"color":"#89DDFF"}},"children":[{"type":"text","value":"EOT"}]},{"type":"element","tag":"span","props":{"style":{"color":"#C3E88D"}},"children":[{"type":"text","value":" >> 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