app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None


@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):

Tip belirlerken standart Python veri tipleri yerine kendi özel tiplerini kullandı, yine de bu ileriye dönük devasa bir adımdı.

Hug ayrıca tüm API'ı JSON ile ifade eden özel bir şema oluşturan ilk framework'lerdendir.

OpenAPI veya JSON Şeması gibi bir standarda bağlı değildi. Yani Swagger UI gibi diğer araçlarla entegre etmek kolay olmazdı. Ama yine de, bu oldukça yenilikçi bir fikirdi.

}\n}\n\n.btn {\n  display: inline-block;\n  font-weight: 400;\n  color: #212529;\n  text-align: center;\n  vertical-align: middle;\n  -webkit-user-select: none;\n  -moz-user-select: none;\n  -ms-user-select: none;\n  user-select: none;\n  background-color: transparent;\n  border: 1px solid transparent;\n  padding: 0.375rem 0.75rem;\n  font-size: 1rem;\n  line-height: 1.5;\n  border-radius: 0.25rem;\n  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out,...

   *
   * The initial write to delegateRef is made definitely visible via the semantics of
   * addListener/SES.schedule. The later racy write in cancel() is not guaranteed to be observed,
   * however that is fine since the correctness is based on the atomic state in our base class. The
   * initial write to timer is never definitely visible to Fire.run since it is assigned after

      logger.isLoggable(Level.FINE) -> Throwable(closer) // These are expensive to allocate.
      else -> null
    }
  }

  open fun logCloseableLeak(
    message: String,
    stackTrace: Any?,
  ) {
    var logMessage = message
    if (stackTrace == null) {
      logMessage += " To see where this was allocated, set the OkHttpClient logger level to " +

      "FINE: Q10000 scheduled after 100 µs: task",
      "FINE: Q10000 starting              : task",
      "FINE: Q10000 run again after  50 µs: task",
      "FINE: Q10000 finished run in   0 µs: task",
      "FINE: Q10000 starting              : task",
      "FINE: Q10000 run again after 150 µs: task",
      "FINE: Q10000 finished run in   0 µs: task",
      "FINE: Q10000 starting              : task",

		}
		return tok
	}
}

// line consumes a single assembly line from p.lex of the form
//
//	{label:} WORD[.cond] [ arg {, arg} ] (';' | '\n')
//
// It adds any labels to p.pendingLabels and returns the word, cond,
// operand list, and true. If there is an error or EOF, it returns
// ok=false.
//
// line may reuse the memory from scratch.

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

**Akiyesi**:

Tí o kò bá mọ̀, ṣàyẹ̀wò ibi tí a ti ní _"In a hurry?"_ (i.e. _"Ní kíákíá?"_) nípa <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` and `await` nínú àkọsílẹ̀</a>.

</details>

### Mu ṣiṣẹ

Mú olupin ṣiṣẹ pẹ̀lú:

        String line;
        BufferedReader br = new BufferedReader(r);

        while ( ( line = br.readLine() ) != null ) {
            line = line.toUpperCase().trim();
            if ( line.length() == 0 ) {
                continue;
            }
            else if ( line.charAt(0) == '#' ) {
                if ( line.startsWith("#INCLUDE ") ) {

# Eine Response direkt zurückgeben

Wenn Sie eine **FastAPI** *Pfadoperation* erstellen, können Sie normalerweise beliebige Daten davon zurückgeben: ein `dict`, eine `list`e, ein Pydantic-Modell, ein Datenbankmodell, usw.

Standardmäßig konvertiert **FastAPI** diesen Rückgabewert automatisch nach JSON, mithilfe des `jsonable_encoder`, der in [JSON-kompatibler Encoder](../tutorial/encoder.md){.internal-link target=_blank} erläutert wird.