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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

El servidor `fastapi dev` debería recargarse automáticamente.

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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

伺服器將自動重新載入（因為在上一步中，你向 `uvicorn` 指令添加了 `--reload` 的選項）。

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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

O servidor `fastapi dev` deverá recarregar automaticamente.

    return ImmutableSet.of(singleValue);
  }

  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {
    return SerializedForm.create(this, new int[] {0}, new int[] {0});
  }

            setPosition(1);
        }
        return (attribute == null) ? null : new Xpp3DomAttributePointer(parent, attribute);
    }

    @Override
    public int getPosition() {
        return position;
    }

    @Override
    public boolean setPosition(int position) {
        this.position = position;
        attribute = (position > 0 && position <= attributes.size()) ? attributes.get(position - 1) : null;

    price: float
    tax: float | None = None


class User(BaseModel):
    username: str
    full_name: str | None = None


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item, user: User, importance: int = Body()):
    results = {"item_id": item_id, "item": item, "user": user, "importance": importance}

     */
    protected static String read(final Reader reader, final int initialCapacity) {
        int bufferSize;
        if (initialCapacity > 0 && initialCapacity <= MAX_BUF_SIZE) {
            bufferSize = initialCapacity;
        } else {
            bufferSize = DEFAULT_BUF_SIZE;
        }
        char[] buf = new char[bufferSize];
        int size = 0;
        int len;
        try {

/**
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
class MethodMap {
    private static final int MORE_SPECIFIC = 0;

    private static final int LESS_SPECIFIC = 1;

    private static final int INCOMPARABLE = 2;

    /**
     * Keep track of all methods with the same name.
     */
    private final Map<String, List<Method>> methodByNameMap = new Hashtable<>();

        }

        public void setDescription(String description) {
            this.description = description;
        }

        public int getCount() {
            return count;
        }

        public void setCount(int count) {
            this.count = count;
        }

        public List<String> getItems() {
            return items;
        }