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from typing import Optional

from fastapi import FastAPI, Body

from pydantic import BaseModel, Field

app = FastAPI()

class Item(BaseModel):

name: str

description: Optional[str] = None

price: float

tax: Optional[float] = None

class Config:

schema_extra = {

"example": {

"name": "Foo",

"description": "A very good Item",

"price": 25.4,

"tax": 3.4,

}

}

class Item2(BaseModel):

name: str = Field(..., example="Foo")

description: Optional[str] = Field(None, example="A very good Item")

price: float = Field(..., example=33.4)

tax: Optional[float] = Field(None, example=3.3)

@app.put("/items/{item_id}")

async def update_item(item_id: int, item: Item):

results = {"item_id": item_id, "item": item}

return results

@app.put("/items2/{item_id}")

async def update_item2(item_id: int, item: Item2):

results = {"item_id": item_id, "item": item}

return results

@app.put("/items3/{item_id}")

async def update_item3(

item_id: int,

item: Item = Body(

...,

example={

"name": "Foo",

"description": "A very good Item !!!",

"price": 34.2,

"tax": 3.2,

},

),

):

results = {"item_id": item_id, "item": item}

return results

@app.put("/items4/{item_id}")

async def update_item3(

item_id: int,

item: Item = Body(

...,

examples={

"normal": {

"summary": "A normal example",

"description": "A **normal** item works correctly.",

"value": {

"name": "Foo",

"description": "A very nice Item",

"price": 35.4,

"tax": 3.2,

},

},

"converted": {

"summary": "An example with converted data",

"description": "FastAPI can convert price `strings` to actual `numbers` automatically",

"value": {

"name": "Bar",

"price": "35.4",

},

},

"invalid": {

"summary": "Invalid data is rejected with an error",

"value": {

"name": "Baz",

"price": "thirty five point four",

},

},

},

),

):

results = {"item_id": item_id, "item": item}

return results

# PYTHONPATH=module_fastapi uvicorn fastapi_request_example_data:app --reload