\n FastAPI\ub294 \ud604\ub300\uc801\uc778 \uc6f9 \ud504\ub808\uc784\uc6cc\ud06c\ub85c, Python\uc73c\ub85c \uc791\uc131\ub41c \ube44\ub3d9\uae30 \uc11c\ubc84 \ud504\ub808\uc784\uc6cc\ud06c\uc785\ub2c8\ub2e4. Python\uc758 \ud45c\uc900 \ud0c0\uc785 \ud78c\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc790\ub3d9\uc73c\ub85c API \ubb38\uc11c\ub97c \uc0dd\uc131\ud558\uace0, \ub370\uc774\ud130 \uc720\ud6a8\uc131 \uac80\uc0ac \ubc0f \uc9c1\ub82c\ud654\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. 2018\ub144 Sebasti\u00e1n Ram\u00edrez\uc5d0 \uc758\ud574 \ucc98\uc74c \uac1c\ubc1c\ub41c FastAPI\ub294 \ucd5c\uace0 \uc18d\ub3c4\ub97c \uc9c0\ud5a5\ud558\uba70, \uba85\uc2dc\uc801\uc774\uace0 \uac04\uacb0\ud55c \ucf54\ub4dc \uc791\uc131\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.\n<\/p>\n
\n FastAPI\ub294 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uc9c0\uc6d0\ud558\uc5ec \ub192\uc740 \uc131\ub2a5\uacfc \ucc98\ub9ac\ub97c \uc81c\uacf5\ud55c\ub2e4\ub294 \uc810\uc5d0\uc11c \ud2b9\ubcc4\ud569\ub2c8\ub2e4. \ub610\ud55c, RESTful API \uad6c\ucd95\uc5d0 \ucd5c\uc801\ud654\ub418\uc5b4 \uc788\uc73c\uba70, \uc790\ub3d9 \ubb38\uc11c\ud654 \uae30\ub2a5\uc744 \ud1b5\ud574 Swagger UI\uc640 ReDoc\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.\n<\/p>\n
\n FastAPI\ub294 Starlette\ub97c \uae30\ubc18\uc73c\ub85c \ud558\uc5ec, \ube44\ub3d9\uae30\uc801\uc73c\ub85c \uc694\uccad\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\uc5b4 \uc131\ub2a5\uc774 \ub6f0\uc5b4\ub0a9\ub2c8\ub2e4. \uae30\ubcf8\uc801\uc73c\ub85c ASGI\ub97c \uc9c0\uc6d0\ud558\uc5ec 25,000 \uc774\uc0c1\uc758 \ub3d9\uc2dc \uc694\uccad\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 Flask \ub4f1 \uc804\ud1b5\uc801\uc778 \uc6f9 \ud504\ub808\uc784\uc6cc\ud06c\uc5d0 \ube44\ud574 \uc6d4\ub4f1\ud55c \uc131\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.\n<\/p>\n
\n FastAPI\ub294 Pydantic\uc744 \ub0b4\ubd80\uc801\uc73c\ub85c \uc0ac\uc6a9\ud558\uc5ec JSON \uac1d\uccb4\uc758 \uad6c\uc870\ub97c \uc815\uc758\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub370\uc774\ud130 \ubaa8\ub378\uc744 \uc815\uc758\ud558\uace0, \uc790\ub3d9\uc73c\ub85c \uc720\ud6a8\uc131\uc744 \uccb4\ud06c\ud558\uba70, \uc798\ubabb\ub41c \ub370\uc774\ud130\uac00 \ub4e4\uc5b4\uc624\uba74 \uc801\uc808\ud55c \uc624\ub958 \uba54\uc2dc\uc9c0\ub97c \ubc18\ud658\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uc740 Pydantic \ubaa8\ub378\uc744 \uc774\uc6a9\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.\n<\/p>\n
\nfrom pydantic import BaseModel\n\nclass Item(BaseModel):\n name: str\n price: float\n is_offer: Optional[bool] = None\n<\/code><\/pre>\n3. \uc790\ub3d9 \ubb38\uc11c\ud654<\/h3>\n
\n FastAPI\ub294 OpenAPI \uc0ac\uc591\uc744 \uae30\ubc18\uc73c\ub85c \uc790\ub3d9\uc73c\ub85c API \ubb38\uc11c\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. API\uc758 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uc640 \ud30c\ub77c\ubbf8\ud130\ubfd0 \uc544\ub2c8\ub77c \uc694\uccad \ubc0f \uc751\ub2f5\uc758 \ub370\uc774\ud130 \ubaa8\ub378\ub3c4 \ud3ec\ud568\ub418\uc5b4, Swagger UI \ubc0f ReDoc\ub97c \uc27d\uac8c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc11c\ubc84\ub97c \uc2e4\ud589\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uae30\ubcf8 \ubb38\uc11c\ud654 \uc8fc\uc18c\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n<\/p>\n
\nhttp:\/\/localhost:8000\/docs<\/code> (Swagger UI)<\/li>\nhttp:\/\/localhost:8000\/redoc<\/code> (ReDoc)<\/li>\n<\/ul>\n4. \ube44\ub3d9\uae30 \uc9c0\uc6d0<\/h3>\n
\n FastAPI\uc5d0\uc11c\ub294 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uc27d\uac8c \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. async<\/code>\uc640 await<\/code> \ud0a4\uc6cc\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30 \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc678\ubd80 API\uc640\uc758 \ud1b5\uc2e0\uc774\ub098 DB \ucffc\ub9ac \ucc98\ub9ac\ub97c \ube44\ub3d9\uae30 \ubc29\uc2dd\uc73c\ub85c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n<\/p>\n\nfrom fastapi import FastAPI\n\napp = FastAPI()\n\n@app.get(\"\/items\/{item_id}\")\nasync def read_item(item_id: int):\n result = await fetch_item(item_id) # \ube44\ub3d9\uae30 \uc791\uc5c5\n return {\"item_id\": item_id, \"result\": result}\n<\/code><\/pre>\n5. \uc758\uc874\uc131 \uc8fc\uc785<\/h3>\n
\n FastAPI\ub294 \uc758\uc874\uc131 \uc8fc\uc785\uc744 \uc27d\uac8c \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \uae30\ub2a5\uc744 \ub0b4\uc7a5\ud558\uace0 \uc788\uc5b4 \ubcf5\uc7a1\ud55c \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 \uae54\ub054\ud558\uac8c \ubd84\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc544\ub798\ub294 \uc758\uc874\uc131 \uc8fc\uc785\uc744 \uc774\uc6a9\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.\n<\/p>\n
\nfrom fastapi import Depends, FastAPI\n\napp = FastAPI()\n\ndef get_query(x: int = 0):\n return x\n\n@app.get(\"\/items\/\")\nasync def read_items(q: int = Depends(get_query)):\n return {\"q\": q}\n<\/code><\/pre>\nFastAPI\uc758 \uc7a5\uc810<\/h2>\n1. \ube60\ub978 \uac1c\ubc1c \uc18d\ub3c4<\/h3>\n
\n FastAPI\ub294 \uba85\ud655\ud55c \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uc5ec \uac1c\ubc1c\uc790\uac00 \ube60\ub974\uac8c \ud504\ub85c\ud1a0\ud0c0\uc785\uc744 \ub9cc\ub4e4\uace0, \uc6b4\uc601 \ud658\uacbd\uc5d0 \ubc30\ud3ec\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \ub370\uc774\ud130 \uc720\ud6a8\uc131 \uac80\uc0ac \ubc0f \uc790\ub3d9 \ubb38\uc11c\ud654 \ub355\ubd84\uc5d0 \ucf54\ub4dc \uc791\uc131 \uc2dc \uc18c\uc694\ub418\ub294 \uc2dc\uac04\uc744 \uc808\uc57d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub85c \uc778\ud574 \ud300\uc740 \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc5d0 \uc9d1\uc911\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n<\/p>\n
2. \ucee4\ubba4\ub2c8\ud2f0\uc640 \uc9c0\uc6d0<\/h3>\n
\n FastAPI\uc758 \uc778\uae30\ub294 \uae09\uc18d\ub3c4\ub85c \uc99d\uac00\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub294 \ud65c\ubc1c\ud55c \ucee4\ubba4\ub2c8\ud2f0\uc640 \ud48d\ubd80\ud55c \ubb38\uc11c\ud654 \ub355\ubd84\uc785\ub2c8\ub2e4. \ub9ce\uc740 \uac1c\ubc1c\uc790\ub4e4\uc774 FastAPI\ub97c \uc0ac\uc6a9\ud558\uace0 \uc788\uc73c\uba70, \ub2e4\uc591\ud55c \uc608\uc81c\uc640 \ub77c\uc774\ube0c\ub7ec\ub9ac \ubcf4\uc870\ub97c \ud1b5\ud574 \ud559\uc2b5\uacfc \uac1c\ubc1c\uc774 \uc218\uc6d4\ud574\uc84c\uc2b5\ub2c8\ub2e4.\n<\/p>\n
3. \uc644\ubcbd\ud55c \ud638\ud658\uc131<\/h3>\n
\n FastAPI\ub294 Python 3.6 \uc774\uc0c1\uacfc \uc644\ubcbd\ud558\uac8c \ud638\ud658\ub429\ub2c8\ub2e4. \ub610\ud55c, Starlette \ubc0f Pydantic\uacfc \ud568\uaed8 \uc0ac\uc6a9\ub418\ubbc0\ub85c \uc774\ubbf8 \ud574\ub2f9 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uacfc\uc758 \ud1b5\ud569\uc774 \uc6a9\uc774\ud569\ub2c8\ub2e4.\n<\/p>\n
4. Swagger UI\uc640 ReDoc\uc744 \ud1b5\ud55c \ubb38\uc11c\ud654<\/h3>\n
\n FastAPI\ub294 API\ub97c \ud6a8\uc728\uc801\uc73c\ub85c \ubb38\uc11c\ud654\ud560 \uc218 \uc788\ub294 \uac15\ub825\ud55c \ub3c4\uad6c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. Swagger UI\uc640 ReDoc\uc740 \uac1c\ubc1c\uc790 \ubc0f API \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc0ac\uc6a9\ud558\uae30 \uc26c\uc6b4 \uc778\ud130\ud398\uc774\uc2a4 \uc81c\uacf5\ud558\uc5ec, API\ub97c \uc2e0\uc18d\ud788 \uc774\ud574\ud558\uace0 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc90d\ub2c8\ub2e4.\n<\/p>\n
FastAPI \uae30\ubcf8 \uc0ac\uc6a9 \uc608\uc81c<\/h2>\n
\n \ub2e4\uc74c\uc740 FastAPI\ub97c \uc0ac\uc6a9\ud558\uc5ec \uae30\ubcf8 RESTful API\ub97c \uad6c\ucd95\ud558\ub294 \uac04\ub2e8\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.\n<\/p>\n
\nfrom fastapi import FastAPI\n\napp = FastAPI()\n\n@app.get(\"\/\")\ndef read_root():\n return {\"Hello\": \"World\"}\n\n@app.get(\"\/items\/{item_id}\")\ndef read_item(item_id: int, q: str = None):\n return {\"item_id\": item_id, \"query\": q}\n<\/code><\/pre>\n