```Python hl_lines="2"
@app.get('/')
def results():
    results = some_library()
    return results
```

---

Eğer uygulamanız (bir şekilde) başka bir şeyle iletişim kurmak ve onun cevap vermesini beklemek zorunda değilse, `async def` kullanın.

---

Sadece bilmiyorsanız, normal `def` kullanın.

---

* `datetime.date`:
    * Python `datetime.date`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `2008-09-15`.
* `datetime.time`:
    * A Python `datetime.time`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `14:23:55.003`.
* `datetime.timedelta`:

# Declare um exemplo dos dados da requisição

Você pode declarar exemplos dos dados que a sua aplicação pode receber.

Aqui estão várias formas de se fazer isso.

## `schema_extra` do Pydantic

!!! note
    If you use a response class with no media type, FastAPI will expect your response to have no content, so it will not document the response format in its generated OpenAPI docs.

## Use `ORJSONResponse`

import java.io.Closeable
import java.io.EOFException
import java.io.IOException
import java.util.logging.Level.FINE
import java.util.logging.Logger
import okhttp3.internal.and
import okhttp3.internal.format
import okhttp3.internal.http2.Http2.CONNECTION_PREFACE
import okhttp3.internal.http2.Http2.FLAG_ACK
import okhttp3.internal.http2.Http2.FLAG_COMPRESSED
import okhttp3.internal.http2.Http2.FLAG_END_HEADERS

# Yol Parametreleri

Yol "parametrelerini" veya "değişkenlerini" Python <abbr title="String Biçimleme: Format String">string biçimlemede</abbr> kullanılan sözdizimi ile tanımlayabilirsiniz.

```Python hl_lines="6-7"
{!../../../docs_src/path_params/tutorial001.py!}
```

Yol parametresi olan `item_id`'nin değeri, fonksiyonunuza `item_id` argümanı olarak aktarılacaktır.

    "$host:$port"
  } else {
    host
  }
}

/** Returns a [Locale.US] formatted [String]. */
internal fun format(
  format: String,
  vararg args: Any,
): String {
  return String.format(Locale.US, format, *args)
}

@Throws(IOException::class)
internal fun BufferedSource.readBomAsCharset(default: Charset): Charset {
  return when (select(UNICODE_BOMS)) {
    0 -> UTF_8

      log.put("normal task running")
      return@schedule -1L
    }

    queue.idleLatch().await(500, TimeUnit.MILLISECONDS)

    assertThat(log.take()).isEqualTo("failing task running")
    assertThat(log.take()).isEqualTo("uncaught exception: java.lang.RuntimeException: boom!")
    assertThat(log.take()).isEqualTo("normal task running")
    assertThat(log).isEmpty()
  }

As `get_db()` is a normal `def` function, **FastAPI** will make it run in a threadpool, with a *copy* of the "context", holding the same value for the context variable (the `dict` with the reset database state). Then it can add database state to that `dict`, like the connection, etc.

### Other utility functions

Any other utility function that you call directly can be created with normal `def` or `async def` and FastAPI won't affect the way you call it.